Loading...
HomeMy WebLinkAboutHandout - Load Flow Modeling �� ` `������ . � I�- i-7 � � � � � . � � � - �«� _ _ _ .. ,� � +ir _ _• �r s +wwr_ �r +�r • +r�rrr_ �r rr�rr� • �rrr � arrr � �t �� _ , � �� _ �.59�dema�c�gro�rC�per ye�r _ � � . _ _ _ _ . � y� __ _ __ . _ ,�..�, . .. ___ � � _ __ � _...��._.�_._� ��....�M_��..�._.�. _�. .�...�. � �� � +rrwrw • +ir System c.�pwkoity(from tra�sf�snr�er caP�'�Yy � �� Customer dem�nd�from simulati+�and WECC) � �. ..�i �� �_' _ '�� �--- _ �J �'1 __ __ ____ _ _ __ _ _ 2014 Zt?15 2t�1G �tll� Zt�.B 2t�I9 2�t1 �tKt�. �OZ� �t}�� �t}�4 • L FI w m I � n oa o o e �� , � � �� Richard Lauckhart Roger Schiffman February 18, 2016 Executive Summary In November 2015, the citizen group CENSE asked Richard Lauckhart and Roger SchifFinan to study the scenario that motivates Puget Sound Energy's transmission project known as "Energize Eastside." We (Lauckhart and Schiffman) are nationally recognized power and transmission planners with specific knowledge of the Northwest power grid. It is standard industry practice to use a "load flow model" to determine the need for a transmission project like Energize Eastside. In order to assess the reliability of the grid, analysts use specialized computer software to simulate failure of one or two major components while serving peak load conditions. For Energize Eastside, PSE simulates the failure of two major transformers during a peak winter usage scenario (temperature below 23° F and peak hours between 7-10 AM and 5-8 PM). We ran our own load flow simulations based on data that PSE provided to the Western Electricity Coordinating Council (WECC). We used a "Base Case" for winter peak load projected for 2017-2018. PSE confirms this is the same data used as the basis for the company's "Eastside Needs Assessment." Our findings differ from PSE's as follows: l.PSE modified the Base Case to increase transmission of electricity to Canada from 500 MW to 1,500 MW. This level of energy transfer occurring simultaneously with winter peak loads creates instability in the regional grid. Transmission lines connecting the Puget Sound area to sources in central Washington do not have enough capacity to maintain this level of demand. 2.PSE assumed that six local generation plants were out of service, adding 1,400 MW of demand for transmission. This assumption also causes problems for the regional grid. 3.Even if the regional grid could sustain this level of demand, it is unlikely that regional grid coordinators would continue to deliver 1,500 MW to Canada while emergency conditions were occurring on the Eastside. 4.We found that the WECC Base Case contains a default assumption that PSE may not have corrected. The ratings for critical transformers are based on "summer normal" conditions, but the simulation should use significantly higher "winter emergency" ratings. The default value could cause PSE to underestimate System Capacity and overstate urgency to build the project. S.The Base Case shows a demand growth rate of 0.5% per year for the Eastside. This is much lower than the 2.4%growth rate that PSE cites as motivation for Energize Eastside. Our study finds critical transformers operating at only 85%of their winter emergency rating, providing enough capacity margin to serve growth on the Eastside for 20 to 40 years. 3 Quaiifications Richard�auckhart served as a high level decision maker at Puget Sound Power & Light (the predecessor of Puget Sound Energy). His employment with the company spanned 22 years as a financial and transmission planner as well as power planning. He served as the company's Vice President of Power Planning for four years. Richard took a voluntary leave package when Puget Power merged with Washington Energy Company in 1997. He provided additional contract services to PSE for more than a year following the merger. After leaving PSE, Richard worked as an energy consultant, providing extensive testimony on transmission system load flow modeling before the California Public Utility Commission. Roger Schtffman has 23 years of energy industry experience covering utility resource planning, electricity market evaluation, market assessment and simulation modeling, regulatory policy development, economic and financial analysis, and contract evaluation. Roger has led a large number of consulting engagements for many clients. He has extensive knowledge of industry standard modeling software used for power market analysis and transmission planning. We are well acquainted with the physical layout and function of the Northwest power grid and the tools used to analyze its performance. Our resumes can be found in Appendix H. Richard has provided pro bono consultation to CENSE since April 2015. He has received no financial compensation other than reimbursement of travel expenses. Roger had no relationship with CENSE prior to this report. 5 Methodology The power grid is a complex interconnected system with behaviors that cannot be easily understood without computer modeling software. We acquired a license to run the industry standard simulation software known as "GE PSLF"1 to perform our studies. The PSLF software uses a database that is supplied by the operator. We had hoped to use the same database that PSE used in its studies, but PSE refused to share it after months of negotiations. Instead, we received clearance from the Federal Energy Regulatory Commission (FERC) to access the database PSE submitted to the Western Electricity Coordinating Council (WECC). FERC determined that we presented no security threat and had a legitimate need to access the database (see FERC's letter in Appendix A). We used the WECC Base Case for the winter of 2017-18, which PSE confirms is the database the company used for that time period. We and PSE have made subsequent changes to the Base Case model in order to incorporate various assumptions. We don't know exactly what changes PSE made to the database, but we will be explicit about the changes we made. N-0 base scenario To ensure that everything was set up correctly, we ran a simulation using the unmodified Base Case and checked to see if the results aligned with those reported by WECC. This is referred to as an "N-0" scenario, meaning that zero major components of the grid are ofFline and the system is operating normally. The outputs of this simulation matched reported results. The WECC Base Case assumes that the Energize Eastside project has been built. In order to determine the need for the project, we needed to study the perFormance of the grid without it.We reset the transmission configuration using parameters from an earlier WECC case that did not include the project. N-1-1 contingency scenario An "N-1-1" scenario models what would happen if two major grid components fail in quick succession. Utilities are generally required 'http://www.geenergyconsulting.com/pslf-re-envisioned � to serve electricity without overloads or outages in this scenario to meet federal reliability standards. PSE determined that the two most critical parts of the Eastside grid are two large transformers that convert electricity at 230,000 volts to 115,000 volts, the voltage used by all existing transmission lines within the Eastside. To simulate the N-1-1 scenario, the Base Case is modified to remove these two transformers from service. PSE apparently made two additional modifications to the WECC Base Case. First, the amount of electricity flowing to Canada was increased from 500 MW to 1,500 MW. Next, the company reduced the amount of power being produced by local generation plants from 1,654 MW to 259 MW. The rationale behind these modifications isn't obvious, and we were concerned how the regional grid (not just the Eastside) would perform with these assumptions in place. To our surprise, simply increasing the flow to Canada to 1,500 MW while also serving peak winter power demand in the Puget Sound region was enough to create problems for the regional grid. The simulation software coutd not resotve these problems (Appendix E describes the problems in greater detail). While it's possible that PSE and Utility System Efficiencies found ways to work around these challenges by making additional changes to the Base Case, we do not know what these changes were. We are confident that prudent grid operators would reduce flows to Canada if an N-1-1 contingency occurs on the Eastside during heavy winter consumption. PSE would turn on every local generation plant. These responses resolve the problems. This is the more realistic scenario we modeled in our N-1-1 simulation. The WECC Base Case uses default values for transformer capacity ratings that correspond to a "summer normal" scenario. The summer rating is reduced in order to protect transformers from overheating during hot summer weather. The "winter emergency" rating would be consistent with best engineering practice for equipment outages during very cold conditions (less than 23° F) that produce peak winter demand. We used this higher rating in our simulation. ? Results N-0 resuits To compare the N-1-1 results with normal operation of the grid serving peak winter demand, we ran an N-0 study using the WECC Base Case for winter 2017-18 with the following modifications: 1 Energize Eastside transmission lines are reverted ta present capacity. 2.Flow to Canada is reduced from 500 MW to 0 MW. 3.Transformers run at "winter normal" capacity. Figure 1 shows load as a perentage of"winter normal" capacity on each of the four transfarmers. N-t��Ca�� lc��d {%�fi V�ir�t+er N4r�a� Ra�tin�� ; �'�#��c s ��� T�Iba�t iU , 7'$�i : Sammam�sh 1�Rtt �� �� &�96 �a�nm�r�ish� ��� ' ' �a� a� �� � �€� �� ' Figure 1: With al!trar�sformers in ser-vice, winter peak load causes no overloculs. � N-1-1 resuits The N-1-1 results are based on the WECC Base Case for winter 2017-18 with the following modifications: 1 Two transformers are out of service. 2.Energize Eastside transmission lines are reverted to present capacity. 3.Flow to Canada is reduced from 500 MW to 0 MW. 4.Transformers run at "winter emergency" capacity. Figure 2 shows that the remaining two transformers, Talbot N and Sammamish W, remain within "winter emergency" capacity ratings. _ __ _ _ _ _ __ _ �t-1-1 Css�L.oad �'�o�'kA�'in�+�r Eme�+�n+�r Rating� �' , ;�c,ut c+f�rvis�) ; Ta3't�at!� 85�6 i i i 5�173t!"k8t'E11S�1 W �95�s "�skACMI!"M#L�'1'1?!".l�N� ,�K}ttt t7f S�C\tTCL� ; t� 1� �E� :3� d� 7(P� $t736 9t�6 Figure 2:Lvnds ori two remaining transforrners are in a safe runge. � Analysis We carefully analyzed the results of the N-1-1 simulation to get a broader view of how the grid is behaving in this scenario. Electricity is served by a combination of high-voltage transformers (transforming 230,000 volts to 115,000 volts) and low-voltage transformers (115,000 volts to 12,500 volts). When we simulated failure of two high-voltage transformers located at Sammamish and Talbot Hill, as PSE did, we discovered that some of the load is redistributed to other high-voltage transformers in the Puget Sound area (see Figure 3). This is a natural adaptation of the networked grid that occurs without active management by PSE or other utilities. The regional grid has enough redundant capacity to balance the load without causing overloads on any transformer or transmission line in the region. > � � F�: � _. �� t�n�-a ���d �� c�+�s��e . ���,�.. ��- w , _�,-� ��,. � � � o��� � «: w�i� � �����`��� . � � P � .Ya. � �g a CNBtil�f -2 , # � ,, � � , � � � , ��� 8 � ma 1-2 � ��� � ` Whitt R' "s 2-2 Figure 3:Load is distributed among other transformers after two transformers fail. �Q We conclude that the grid is capable of ineeting demand in emergency circumstances in the winter of 2017-18. How soon after that will system capacity become strained? Concerns about future capacity are illustrated in Figure 5, PSE's demand forecast graph.zThis graph raises several questions. For example, it's not clear haw PSE determined the "System capacity range" of approximately 700 MW. If this value is derived from the transformer capacities listed in the WECC Base Case, these capacities ` are set to default values corresponding to "summer normal" conditions. PSE's graph shows Customer Demand growing at an average rate of 2.7% per year. However, data submitted by PSE to WECC shows a growth rate of only 0.5% per year. An explanation of this discrepancy is necessary to understand this graph. � � < � � � � � F�*� � � � �' � � ��0 ;.__� ...................______._ � ___ �..________,...__.___..._.._ ....._ � � __ � �:,�� �_._.�._�.,,,�_ .,�_,,,,,.. � i ,, ���-.;:.... . ��� � �� ������ � 7tM1 �:��+�"""�":� �� "�� �,.. ',-�`��"*�r-„� � ,; �� ,�� +�� .+� �,� � �� � + wrwriu w�-�irwrw'� �� ���� � °�rir . w�.rr ': ��'rr�i,�;e��� � ,.,, �"" _ ,. �____.:W ��___ _ $50 � __ ��. _ � _ ,� _ �j �� �..�Y��__���_�_._____�n__.________��_ ,,,,,, rr rr�-���rti p� � ; ,.,,�„', ''' � gQQ � ^ ; C�tcrn+�r d�m,arx!loevtrcasf wiRh 100%at taor�rv�t3a��Fs mat ` ' � � � Customer'detnand finecast w�7"5°Jo o�c+�+s�rvatitm goats trfet � _ � _� � .. :..,_...,,.. .. ... __..,� .. . _.�:,� , .,..a.,. . ..�.,.. ��.m . .,��.. � _..�._,.��..,A.�.,, .„ .... �., � � 2C194 �t}1v 2�18 2�i7 2�I�8 �9 �. 2� �1 � �i2� 2Q��► '� Figure 4:PSE's graph shows customer demand exceeding system capacity in 2018? z http:llwww.energizeeastside.com/need „�,� Although we don't have enough information to create a graph suitable for long-term planning, we we feel Figure 5 is a better approximation of system capacity and demand growth on the Eastside. The "System capacity" is based on "winter emergency" transformer ratings, which are more appropriate than summer ratings for this scenario. The higher ratings raise the overall capacity to approximately 930 MW. The "Customer demand" line shown in Figure 5 is based on loads reported in the load flow simulation for the two remaining Eastside transformers. The 2014 value is higher than in PSE's graph, because these transformers serve loads outside the Eastside area. The growth rate matches the 0.5% rate observed in WECC Base Cases. �� � � � _' * � � � . � . ' � ;� �w► • � r �r • �rir a � � ,� • rrrr s � ' ���'t���'i�a < � �! ,�� . ���� � � ��� � �� i +� � � � ; � '� - ._._�.�. ,. .._...� ._....�.., _.......... ....�_..� ..__.._ ,. .____.,.. , � �" � +� r � ��it tl�a��dnnwi��r++wv�j ' � � _ ����a y��r�wtl1 Y�dC9� � : � �� � �_, y.. ,.�a s` D ' � 14� �t�4 �tt � �:it �► �. a�l� i�t� �:+t Figure S:Alternative Demand Forecast shows slower demand growth and higher system capacity(based on "winter emergency"transformer ratings). �� Comparison with other studies The conclusions of the Lauckhart-SchifFinan study differ from previous studies. We stand by our conclusions and will share our models and results with anyone who has clearance from FERC. Here we review the other studies and explain why their conclusions might differ from ours. PSE/Quanta Two different load flow simulations were performed by PSE and Quanta, a consultant employed by PSE. We have the following concerns with both studies: 1. An unrealistic level of electricity is transmitted to Canada. 2. Nearly all of the local generation plants are turned off. 3. The appropriate seasonal ratings for the critical transformers were not used. 4. It's not clear how the customer demand forecast was developed, but there is an unexplained discrepancy between the forecast used for Energize Eastside (2.4%annual growth) and the forecast reported to WECC (0.5% annual growth). The first two assumptions cause regional reliability problems for the WECC Base Case that must have required additional adjustments by PSE/Quanta. We don't know what those adjustments were. ut�lity System Efficiencies The City of Bellevue hired an independent analyst, Utility System Efficiencies (USE), to validate the need for Energize Eastside. USE ran one load flow simulation that stopped electricity flow to Canada. According to USE, 4 of the 5 overloads described in the PSE/Quanta studies were eliminated, and the remaining overload was minor. Our load flow simulation studied the same scenario (N-1-1 contingency with no flow to Canada and local generators running), but we did not find any overloads. We believe three assumptions explain the different outcomes: 1. USE does not specify what level of generation was assumed for local generation plants. In verbal testimony before the Bellevue '13 City Councit, USE consultants said that they did not assume all of the capability of local generation was operating. Our study assumes these plants will run at their normal capacity. 2. USE says emergency ratings were used for the critical transformers, but it isn't clear if USE used "winter emergency" ratings. Our study assumes winter emergency ratings. 3. USE does not independently evaluate the customer demand forecast (2.4% annual growth is assumed). Our study assumes the load growth forecast that PSE provided to WECC. We believe our assumptions more accurately reflect the actual conditions that would occur in this scenario. Stantec Consulting Services In July 2015, the independent consulting firm Stantec was asked to review the studies done by PSE and USE. Stantec issued its professional opinion without performing any independent analysis or load flow simulations. Stantec says PSE's methodology was "thorough" and "industry standard." However, Stantec does not address the shortcomings we have identified with previous studies. ' 14 � . Clearance from FERC Federat Energy Regutatory Camrnissicrn Vi�ashington,T.3C �t1426 SE� 0 l 28i�i I.etter of Release, Re;CEII No.CE15-130 VIA CERTIF`IED MAI,1 Rich�rd Lauckhart L)ear Mr.l,auckhart: T�Sis is in res�rnse to ihe Juiy 15, 2Q15 request you submitted under the Fedecal Energy Regulatory Commission's(Cornmission ar FERC)CriCical Bner�y lnfi�structure Inforrnation (CEII) regulatians at 18 C.F.R. §38$.113{d)(4} (2415), Speci�ically, you requested a copy�f the Pug�t Sound En�rgy,Tnc.FERC Fc�rn No.715,�tnmarl Transmissian Ptanning and Evaluation Report. By letter dated August 21, 20tS, tti� Cammission issued a ftrtding that you are a legitimate requester with a need for the infotmation. In accord2�nce with t8 C.F.R. §388.112{e),the enclosed DVD caatains the infc>rrnation requested and is being reieased to you suhject tc�ihe non-disciosure�greement exeeuted by yau cancerning this m�tter. As prc�vided by 18 C.F.R.§388.1 t 3(d�4}(ivj af the Comrnission's regulatians,you may appeat this determination pursuant to 18 C.F.R § 388,110. Any appeat from this d�teiminadon must be filed within�5 days of ihe date of`this letter. The appea!rnu�t be in wr'rting, �fdressed to Davzd L. Mcsrenoff, Generat Counsel, Feder�l Energy Regutatory Commissian,888�irst Street,NE,Washington,DC 2042b. Please include a copy to Ctiarles A. Beaman, Associate Generat Caunset, General and Adminisirative Law, at the same address, Sincerely, ' Leonard M.Txo Director Office of External Affairs Enclosure '15 � Choice of Base Case To perform a load flow study, one needs a database reflecting the physical characteristics of the power grid. FERC has recognized that stakeholders need to have access to a Base Case that reflects the system. Each utility or a designated agent is required to file power flow base cases with FERC on an annual basis.3 WECC acts as a designated agent for most of the utilities operating in the western U.S. In an email dated November 19, 2015 Jens Nedrud, the Senior Program Manager for Energize Eastside, confirmed that PSE uses Base Cases filed by WECC as its Base Cases. For the purposes of this study, Lauckhart and Schiffman obtained the 2014 WECC Base Cases from FERC.4 These included 13 Base Case runs, four of which are Heavy Winter scenarios. In order to evaluate the need for the EE project, the heavy winter 2017-18 Base Case was modified so that the Energize Eastside project was not included. 5 We do not know if this modified 2017-18 Base Case is identical to the one used by PSE to justify the project, because PSE has refused to share their 2017-18 Base Cases for independent review. The WECC Base Case assumes 500 MW is transmitted to Canada. PSE apparently increased that amount to 1,500 MW. The WECC Base Case assumes local generation in the Puget Sound Area is running at normal capacity. PSE appears to have reduced those contributions by 1,395 MW. Our PSLF modeling suggests that PSE's modifications are not feasible and grid operators would not allow these conditions to occur on a heavy winter load day.6 Load data from the WECC Heavy Winter Load 2017-18 Base Case is chosen as the basis for this study. This is the latest data provided by FERC/WECC for the winter of 2018. PSE was involved in the development of this Base Case along with other utilities including BPA and Seattle City Light (SCL). All utilities use these Base Cases to determine if the grid is capable of moving power from sources to loads. Further, it is the only data available in which there are identified loads on specific substations. '�� The loads on the main Eastside substations in the WECC Heavy Winter 2013-14 and 2017-18 Base Cases have been examined and analyzed. All of the Eastside substations were included: Medina Overlake South Bellevue Clyde Hill Lochleven Factoria Bridle Trails North Bellevue College Evergreen Center Phantom lake Ardmore Midlakes Eastgate Kenilworth Lake Hills Somerset The total load on these substations in the 2013-14 Base Case was 394.6 MW. The total load on these substations in the 2017-18 Base Case was 402.4 MW. This is a peak load growth of 2.0% over the 4 year period (an average increase of 0.5% per year}. This is in line with predicted growth of energy and peak in King County. PSE and USE appear to be extrapolating the higher growth rate of a few substations due to "block loads" and applying it uniformly to 600 MW of existing substation load. This simplification overestimates the overall growth rate. Furthermore, the total load on the substations listed above is only 400 MW. It is not clear how PSE arrived at a 600 MW load. 3 http://wwx>.ferc.gov/docs;filing/forrns/form-715linstructions.c�sp#General%201nstructions °On July 9,201 S FERC provided Lauckhart the rnost recent WECC Base Cnses that it had availuble to send to regtresters. Those Base Cuses were ones filed in 2014 by WF.CC. S On Dec.4,2015 Lauckluert also received from FEXC a copy of the 2015 WECC FERC F'orm 71 S frling.In that filing there was no Base Case filed for the winter of 2018.However, there was a Base Case filed for the winter of 2020.A review of that 2020 Base Case showed i�ery little growth on the Eastside from tlle 2018 Base Case.It also s/rowed that the rest of the Northwest actually reduced their lo�d forecast for the year 2020 over their forecast for 2018. In totul,the loading on the eastside 230/115 KV transformers in the 2020 case were lower than the loading on the Enstsicte 230/IIS KV transformers in the 2018 case.The trend is tltat the situation is not getting worse since the load forecasts for the northwest are dropping overall which also reduces loading on the Eastside 230/I15 KV transformers. 6 With no other changes to the WECC Base Case for the winter of 2018,increasing PNW to BC transfers to 1,500 causes the system to need to import more power across the Cascades from Central Washington.This eauses the PSLF model run to fail to find a solution.When we say no solution,we mean the voltage in the Puget Sound region gets too low and the model cannot find a way to correct that. '�� � Ceneration pattern usea PSE's gas-fired generation plants located in the Puget Sound area have a total rated capacity of 1,654 MW. How much of this capacity should be used to serve peak demand during a heavy winter load event?There are three choices: 1. The Eastside Needs Assessment prepared for PSE by Quanta assumed generation of only 259 MW, without explaining why such a low level was used. 2. The load flow study performed by USE also ran the plants at a reduced rate, but the study did not specify the exact amount. 3. Three of the four WECC heavy winter Base Cases assume the plants are running at their rated capacity of 1,654 MW. One of the Base Cases turns off one plant for reasons that are not clear, resulting in a lower level of generation at 1,414 MW. The 1,654 MW capacity used by WECC in 3 of its 4 heavy winter Base Cases is a prudent choice for several reasons. First, PSE built and/or acquired these plants for the explicit purpose of ineeting its load obligations during cold winter events. Second, PSE has a well-documented shortfall of generation capacity to serve peak demand, and it will be less risky and less expensive to run these plants than to buy power on the spot market. Third, because these plants generate electricity at 115 kV, the strain on PSE's overloaded 230/115 kV transformers would be reduced by increasing the supply of 115 kV electricity. 1$ �. Exports to Canada PSE and USE assume that 1,500 MW of power must be delivered to Canada, even if PSE is experiencing failure of two critical system components (an N-1-1 contingency) during heavy winter load conditions (temperatures less than 23° F in the Puget Sound region). The WECC Base Cases assume otherwise. In the WECC Base Case for heavy winter 2013-14, 500 MW of power is flowing south from Canada to the U.S. In the WECC Base Case for heavy winter 2017-18, with the Energize Eastside project in place, 500 MW of power is flowing north to Canada, not 1,500 MW. PSE and USE imply that it is the Columbia River Treaty that provides a Firm Commitment to deliver 1,500 MW of power to Canada. It is clear from reading numerous Treaty documents (e.g. the original treaty, the amendment to the treaty in 1999, and related documents) that the Treaty itself imposes no obligation on the United States to deliver Treaty Power to Canada. To the contrary, Canada has stated they do not want the Treaty Power delivered to Canada. Instead, PowerEx takes delivery of Canada's share of Treaty Power at the point of generation in the U.S. and delivers it for sale to U.S. entities. Canada finds it preferable to receive money for their share of Treaty Power rather than having the power delivered to Canada. The reasonable assumption for this study is that no power will flow from the U.S. to Canada during a major winter weather event and simultaneous facility outages in the Eastside. 19 � Regional grid capacity Iimitations Most of the electrical generation facilities that serve the Puget Sound region are located east of the Cascade Mountains. The electricity they produce is transmitted to customers in the Puget Sound area through eleven major transmission lines known collectively as the "West of Cascades - North" (WOCN) transmission path. WE$T t}F CASCADES NQ�t7H��.OWGA'� Actuat L�ding,s and C)TCs:2$Apr10-27May14(30 Days) ( Mf.AN I5-MtNt3TF IAA�:WEST OF CA�CADES NOR'tk�F1.OWGATE(335i 5a ' **�MF.AN 15-MtNtITE?pTC 1VE;ST 4F CASCADt�:S MORTFi F[.OWGA'CE{b 1465) edo-w 110U0 �'�T 4F CASt:AD£S�iORTH FLOWGATE:Averrge IS-w�s i.oa�(mvr}: AR Ywra:34A2 Hcavy Marz ea1y:�A49 t3��1 heurs ody:5296 t000d � 8090 I � � +i'�, ,�Y�9� �;i 'i I y 7000 I+�'' ` � � " 1 �._��� I �,:is�; � � �� � �� �06 i00D 3�0 200D 1t1U0 0 w.� � � � � $ � � � # � # � � � � � � � � � � � � � � � � � � � N N Pa � N N �'I tV N <'V N N �MY launz;19+p�1Rq6 bt'eraec aC2.a'YaW Jl;.A1fA rw�tuf�s vwl7 Figure 6:Chart from BPA shows load(in yellow)and ma.zimum capacity(in red)for the WOCN path. The exact transmission capacity of the WOCN path is confidential information which cannot be discussed in detail here. However, there is a report available on the web from the Bonneville Power Administration that discusses a problem that occurred on the WOCN path in May 2010.' On page 31, the report includes a chart showing loads and capacities 2fl of the WOCN path over a 30-day period. The load (shown in yellow) varies from 5000-7000 MW and the path capacity (in red) varies from 7000-9000 MW. During a heavy winter usage scenario, the loads are likely to be higher than during relatively mild weather conditions in May. PSE's assumptions for Energize Eastside would further increase the load. To deliver 1,500 MW to Canada, loads on the WOCN path would need to increase by approximately 1,000 MW. To make up for the loss of electricity that could have been generated by six local generation plants, an additional 1,400 MW must be transmitted on the WOCN path. In total, loads would increase by approximately 2,400 MW. If the increased load exceeds the capacity of the WOCN path, grid operators and utilities would have to make adjustments like they did in May 2010. Some of these steps and consequences are described on page 40 of the BPA report: "Many customers (e.g., TransAlta, Calpine, PSE, PGE) were not able to use low cost power purchases, and instead had to operate higher cost thermal projects that otherwise were idled or were out or planned for maintenance. Although there were multiple complaints regarding the ability to serve load, the basis for the complaints appeared to be economic or financial impacts." We feel that WOCN path capacity limits explain why the simulation software could not find a way to maintain voltage levels in the Eastside given PSE's assumptions. We conclude that it is not reasonable to build local infrastructure to support these conditions if regional infrastructure cannot reliably serve the implied loads. 'http://pnucc.org/sites/default/frles/BPAWOCNLessonsLearned.pdf 21 � Equipment ratings Ambient temperature affects the capacity of electrical transmission facilities. Colder temperatures help avoid overheating. For this reason, it is industry standard practice to provide different ratings for summer and winter seasons. It is also industry standard practice to allow higher loading of equipment, including transformers, during emergency events due to the fact that emergencies do not last long. Utilities can take advantage of the fact that transformers can safely handle brief over-peak conditions to reduce installation costs and maintain system reliability. The WECC Data Preparation Manual requires transmission owners to provide the following ratings for its transformers: • Summer Normal Rating • Summer Emergency Rating • Winter Normal Rating • Winter Emergency Rating Relative transformer capacities ' ,* '� ' ��� t• . ��: �� �u= �y„ ; �, . ��'r'; � z. �� � T c, P x*�3,..�� ��,, s r�;; �umrrter Suri�em�r �Minter Winter Narmal Emergency Normat Emergency __ _ __.. ; Figure 7:Ratings for different scenarios,normalized to Summer Normal rating. PSE has indicated that the rating on the Sammamish and Talbot Hill transformers are approximately 352 MVA (Mega-volt amperes). According to the data that PSE provided to WECC, this is the Summer Normal Rating of these transformers. PSE has advised WECC that (a) its Winter Normal ratings are about 9% higher than Summer Normal, and (b) Winter Emergency Ratings are about 21% higher than Winter Normal Ratings. 22 When running the PSLF model, the run parameters must be set to point to the correct rating that has been provided in the data base. 8 In the N-0 analysis, our load flow studies used the winter normal rating which is 9% higher than the 352 MVA summer normal rating. In the N-1-1 analysis, our load flow studies used the winter emergency rating that is 21% higher than the winter normal rating. 23 � Summer load scenario Most of the load flow modeling done by PSE and USE to justify Energize Eastside has been focused on a winter peak load scenario. Recently, PSE has mentioned reliability concerns in the summer to provide additional motivation to build Energize Eastside. So far, PSE has refused to provide input data and results for both winter and summer scenarios. We briefly reviewed the WECC Base Case for heavy summer demand in 2019. The peak load on Eastside substations is 281 MW in this scenario. This is 30% lower than the total load for heavy winter demand in 2017-18 (402 MW). The drop in transformer ratings due to summer heat is only 9%, so this scenario should be significantly less stressful on PSE's infrastructure than the winter scenario. Rapid growth in air conditioning is a concern, but if there is a summer need, then rooftop solar in Bellevue and other cities will be helpful and should be encouraged. Further study is warranted. 24 � Resumes �� RICHARD LAUCKHART J.Richard Lauckhart Energy Consulting J. Richard Lauckhart has 40 years of experience in power supply planning, electricity price forecasting and asset valuation. He began his career as a distribution engineer with Pacific Gas &Electric Co., and held various positions at Puget Sound Power&Light Co. (now Puget Sound Energy) in power supply planning,culminating as vice president of power planning. For the last 12 years Mr. Lauckhart has performed consulting assignments related to power market analyses, price forecasting services, asset market valuation, integrated resource planning, transmission line congestion analysis, and management of strategic consulting engagements for clients in North America,including investor-owned and municipal utilities, independent power producers,and lenders. Mr. Lauckhart received a bachelor of science degree in electrical engineering from Washington State University in 1971 and a masters degree in business administration from the University of Washington in 1975 Representative Project Experience Black&Veatch Seplember 2008 to October 20I1 Managiflg Director Mr. Lauckhart oversees wholesale electricity price forecasting, project revenue analysis, consults regarding wind integration matters electric interconnection and transmission arrangements for new power projects, and other related matters in the electric power industry. In addition, he heads Black & Veatch's WECC regional power markets analysis team. WECC Power Market Arralyszs and Transnrissian Analysis, Henwood/Global �nergy Uecisiof:slVentyx ao�o-Zvns Senior Exeeutive Mr. Lauckhart oversaw wholesale electricity price forecasting, project revenue analysis, consulted regarding electric interconnection and transmission arrangements for new power projects, and other related matters in the electric power industry. In addition, he headed Global Energy's WECC regional power markets analysis team. Lauckhart Consulting,Inc. 1996—2000 Preside�u Primary client- Puget Sound Energy (formerly Puget Sound Power&Light Company): Involved in power contract restructuring,market power analysis,FERC 888 transmission tariffs, and other matters. Testified at FERC regarding Puget's 888 tariff. Testified for Puget in June, 1999 arbitration with BPA regarding transmission capability on the Northern Intertie. Northwest IPP Under retainer with IPP from July 1996 through December 31, 1999. Involved primarily in merchant power plant development activities including permitting activity, owner's engineer identification, environmental consultant identification, water supply �� RICHARD LAUCKHART arrangement, transmission interconnection and wheeling arrangements, gas pipeline arrangements, economic analysis, forward price forecasting, marketing, and related issues. Levitan&Associates(Boslarr) Participated in teams involved in electric system acquisition activities. Performed preliminary analysis for a major retail corporation regarding possible participation as an aggregator in the California deregulated electric market. Involved in the evolving discussions about deregulation in the state of Washington including participant in HB 2831 report and ESSB 6560 report. Member of advisory task force for Northwest Power Planning Council study of generation reliability in the Pacific Northwest. Participating writer in a newsletter advocating electric deregulation in the state of Washington. Puget Sottn�!Power&I.ighl Cornpurzy 1991-1996 Vice Pr•esident,Power Planning lnvolved in all aspects of a$700 million per year power supply for a hydro/thermal utility with a 4,600 MW peak and 2,200 aMW energy retail electric load. Included responsibility for a 22 person departrnent involved in power scheduling (for both retail and wholesale power activity), power and transmission contract negotiation and administration, regulatory and NERC compliance, forward price forecasting, power cost accounting, and retail rate activity related to power costs. Activity included matters related to 650 MW of existing gas-fired, simple cycle combustion turbines. In addition, 660 MW of combined cycle cogeneration "qualifying facilities" were developed by others for Puget during this time frame. Detailed understandings of the projects were developed both for initial contractual needs and later for economic restructuring negotiations. Mr. Lauckhart was the primary person involved in developing Puget's Open Access transmission tariff in accordance with FERC Order 888. Preget Sou�cd Power&I.,ig)tt Cumpany 1986—1 y91 Manager, Power Planning The company's key person in developing(1)a WUTC approved competitive bidding process for administering PURPA obligations,and(2)a WUTC approved regulatory mechanism for recovery of po��er costs called the Periodic Rate Adjustment Mechanism (PRAM). Puget Sound Power&Light Cornpany 1y81-1986 Director,Power Planning The company's key person in developing a power cost forecasting model that was customized to take into account the unique nature of the hydro generation system that exists in the Pacific Northwest. Puget Sourrd Power&I,ight Conrpany 1979—1981 Ma��ager, Corporate Planning Responsible for administering the corporate goals and objectives program. Puget Sor�nd Power&I.ighl Compaity �7 RICHARD LAUCKHART 1976—1979 Financial Planning Improved and ran a computerized corporate tinancial forecasting model for the company that was used by the CFO. Puget Sound Power&Li�ht Company I974—197h Trnnsrnissio�r Planner Performed transmission engineering to assure a reliable transmission system. Parifrc Gas& .F,lectric Company 1y71-1974 Distribution Engineer Performed distribution engineering to assure a reliable distribution system. Other Relevant Experience • Expert testimony for Montana Independent Renewable Generators related to avoided cost regulations and pricing filed February 2009 at the Montana PSC • Expert Testimony for LS Power in the SDG&E Sunrise Proceeding regarding economics of in-area generation vs. the cost of transmission and imported power Spring 2007 � Expert Testimony for BC Hydro in the Long Term Resource Plan, February 2009 dealing with natural gas price forecasts and REC price forecasting • Expert Testimony for John Deere Wind in a proceeding in Texas in November 2008 related to avoided costs and wind effective load carrying capability • Expert Testimony for Two Dot Wind before the Montana commission regarding wind integration costs Spring 2008 • Expert Testimony in the BC Hydro Integrated Electricity Plan proceeding regarding WECC Power Markets. November 2006. • Expert Testimony for Colstrip Energy Limited Partnership before Montana PUC regarding administration of QF contract prices. July 2006. • Expert Testimony for Pacific Gas & Electric regarding current PURPA implementation in each of the 50 states. January 2006. • Expert Testimony in CPUC proceeding regarding modeling procedures and methodologies to justify new transmission based on reduction of congestion costs (Transmission Economic Analysis Methodology—TEAM). Summer 2006. • Expert Testirnony for BC Hydro regarding the expected operation of the proposed Duke Point Power Project on Vancouver Island,January 2005 • Expert Testimony for PG&E regarding the cost alternative generation to the proposed replacement of steam generators for Diablo Canyon,Summer of 2004. • Expert Testimony in an arbitration over a dispute about failure to deliver power under a Power Purchase Agreement, Fall 2004. • Integrated Resource Plan Development. For a large investor-owned utility in the Pacific Northwest, Global Energy provided advanced analytics support for the development of a risk-adjusted integrated resource plan using RISKSYM to provide a stochastic analysis of the real cost of alternative portfolios. • Expert Testimony for SDG&E, Southern California Edison, and PG&E regarding IRPs,WECC markets and LOLP matters before the California PUC,2003. �� RICHARD LAUCKHART • Miguel-Mission Transmission Market Analysis-San Diego Gas & Electric. San Diego Gas &Electric retained Global Energy to oversee an analysis of the economic benefits associated with building the Mission-Miguel transmission line and the Imperial Valley transformer. Global Energy performed an analysis of the economic benefits of the Mission-Miguel line,prepared a report,sponsored testimony at the CPUC, and testified at the CPUC regarding the report. • Valley-Rainbow Transmission Market Analysis-San Diego Gas & Electric. San Diego Gas&Electric also engaged Global Energy to analyze the economic benefits associated with building the Valley-Rainbow transmission line and to respond to the CPUC scoping memo that"SDG&E should describe its assessment of how a 500 kV interconnect,like Valley-Rainbow,will impact electricity markets locally,regionally,and statewide." Global Energy analyzed the economic benefits of the Valley-Rainbow line, prepared a report,sponsored testimony at the CPUC,and testified at the CPUC regarding the report. • Damages Assessment Litigation Support. Global Energy was engaged by Stoel Rives to provide damages analysis,expert testimony and litigation support in for its client in a power contract damages lawsuit. Global Energy quanti�ed the range of potential damages, assessed power market conditions at the time, and provided expert testimony to enable Stoel Rives' client to prevail in a jury trial. • Expert Testimony, Concerning the Economic Benefits Associated with Transmission Line Expansion. Testimony prepared on behalf of San Diego Gas & Electric Company, September 2001. • Expert Testimony,Concerning market price forecast in support of Pacific Gas and Electric hydro divesture case,December 2000. • Expert Testimony,Prepared on behalf of AES Pacific regarding value of sale for Mohave Coal project to AES Pacific for Southern California Edison, December 2000. • Expert Testimony, Prepared on behalf of a coalition of 12 entities regarding the impact of Direct Access of utility costs in California. June 2002. Mr. Lauckhart was Puget's primary witness on power supply matters in eight different proceedings before the Washington Utilities and Transportation Commission. Mr.Lauckhart was Puget's chief witness at FERC in hearings involving Puget's Open Access Transmission Tariff and testified for Puget in BPA rate case and court proceedings. 2�1 Rt? GER SCHIFFMAN SUMMA.RY OF QLTAI,IFICATInNS Nir. Schiffman has 23 years of energy industry experience covering udlity resource planning, electriciry market evaluarion, market assessment and simulation modeling; regutatory policy development; economic and financial analysis, and contract evaluation. Mr. Schiffman has worked �vith public and private utility companies on resource planning decisions, power piant retirement decisions, a�oided cost determinations, and on rower supply procurement activity. Mr. Schiffman has worked extensively with electric utiliry staff, power plant developers, regulatory personnel, investment bankers and other industrp�articipanr.s in both consulring and regulatory environments. 1�1r. Schiffman possesses extensive financial analysis skills, supported by thorough knowledge of financial, economic and accounring principles. He has a strong technical understanding of the elcctric utility industry and excellent analytical problem-soiving skills,including quantitarive analysis and computer modeling techniques. EXI'FRIE NCl:' ._._...._.........._..._._..........._..._.,._�__..��._......._..__...__....__.____...._._._..___.__W...._...__._�..._.�._...�._..._..._.._.j__6_._.__"_____'_._.___.W.s...__..�""""'__ _._.._....._._........_.. I'r�ztrc�i. ;z(, .I�1{zc•X; <errcf �'c•�rtc;la (.�«r�car;rt�c�.rz 1",�xc�. 5:ac�r.rtzxez.�to tT'Fl, 13�1xatc;tz 2(IfI9 tr� (7ctcrlic::r,2t11,Y ■ Initiated Integrated Resource Plan for the Vir�,rin Islands ��'ater & Power Authority. This projcct is a multi-faceted IRP, where detailed planning and potendal siting impaas must be considered in the overall planning,due to geographic and topology limitarions on the islands. l�fr. Schiffman directed the analysis and play�ing the lead analydc role in assessing resource needs. This included direcring the data gathering efforts, taking technical lead in complering production cost and financial modeling, and managing Black & Veatch's team of technical esperts. Mr. Schiffman also developed a stakeholder process and gave multiple presentations before stakeholder and customer groups. ■ Completed nodal market simuladon and congestion study for. a concentrating solar plant in Northern Nevada.This engagement includes a re�7e�v of transmission system impact studies, power flow data and de�=elopment of a PROMOD nodal simulation database to assess congestion likelihood for the project. ■ Completed economic assessmcnt of a large pumped storagc project in Southern California, including development of ener�y market arbitrage, capacity market and ancillary services market revenue forecasts. Developed pro fonna financial statements examining economics of project.under different ownership and off-take agreement structures. ■ Coinpleted lntegrated Resource Plan for Azusa Light&VG'ater,a municipal utility�in southern California. This project involved using Black & Veatch's EMP database and price forecast, specifying thermal and renewable resource options, and completing detailed market simulation and financial modeling to determine a preferred power supply plan for Azusa. A key focus of the study is to identiiy resource oprions to replace output from the San Juan 3 coal plant,which is scheduled to retire. • Completed Integrated Resource Plan for Pasadena W'ater & Power., a municipal utility in sour.hern California. This project involved using Black & Veatch's EMP database and price forecast, specifping thermal and renewable resource oprions, and completing detailed market simulation and financial modeling to determine a preferred power supply plan for Pasadena. The project also included reflection of key stakeholder input, and testing stakeholder driven 1701 ARGNA DR1VE DA�'IS, CA 9�G18 CLLL ((530) 219-7347 HOME OFN10Ei (530) 405-3304 3a FM��TI_: ROGE:R_SC.;HIFF;�IAN@YAHOO.COM ROGER SCHIFFMAN PAGE 2 policy proposals for advancing renewable resource procurement beyond state-mandated RPS levels. A key focus of the study is to idenrify resource options to replace output from tl�e Intermountain coal plant,which is scheduled to retire. • Complcted generation reliability study for the Brownsville Public Utility Board. This study included directing the complcuon of detailed reliabiliry modeling using UE-MARS, and evaluating loss-of-load probabilities for BPUB based on its existing system and based on the addition of a 200 MVG'ownership sharc in the combined rycle power plant being developed in Brou�nsville by Tenaska. The study also included detailed pro forma modeling of partial ownership of the combined cycle plant, and a financial and risk assessment presented to BPUB's Board of Directors, and also used to address raring agenc} quesrions about credit impacts of the new power plant. On behaif of Southern California Edison, completed nodal power price forecast and assessment of high voltage transmission upgrades and additions in Southern California. This project included an assessment of congesdon, locational margin�l pricing, transmission system losscs, and economic impacts of adding new transmission faciliries in WFCC,with particular focus on Southern Califarnia. PRO1�70D IV was used to complete the nodal market analysis, and PROMOD simularion results were translated into GE-PSLF for more detailed transmission system modeling of power flow cases under a variety of supply and demand condirions throughout the year. • Completed four projects focused on nodal market modeling in California, Arizona and Southern Nevada. These studies were used to assess congestion risk faced by solar and�vind generation �rojects at the sites where each is being developed. Completed PROb40D N dispatch and nodal anal��ses for. each project, and developed risk assessments for generation curtailment risk. Also developed analyses of transmission system congestion along delivery paths for each project, and on key economic transmission paths in Northern and Southern California, transmission import paths into Southern California, and transmission paths in Southern Nevada. • Completed resource and power supply planning/procurement project for confidenrial SPP energy supplier. Completed a competitiveness assessment of major electricity supplier in Nebraska, examining cost structure, net resource position, generarion asset characterisrics, transmission access and delivery options, and overall compedtive posirioning of SPP, MISO and MRO entities that have potenrial to provide whc:�lesale electricit�� service in l�ebraska. Worked collabor.au��ely with clienr.and a wholesale customer task force • Complcted due diligence analysis of portfolio of power supply assets to support bid development.The generators being sold were located in SPP,WECC,and the Northeast.Thc WECC asset is a qualifying facility, which required detailed representation and modeling of the California PL`C Short-Run Avoidecl Cost tariff and pricing formula. One of the SPP assets is also a qualifying faciliry, which required detailed analysis of the steam load and interaction between joint power and steun production. Completed modeling analysis and risk assessment of power supply agreements, developed revenue forecasts for each power plant, and cotnpleted merchant plant analpsis of plant operations after PPA expiration. • On behalf of a municipal utilirn client,decelopcd database of renewable energy resource bids solicited through an RFP process, developed assessment of delivery tenns and transmission tariffs associated with power deli�rery from distant resources, and completed bid screening analysis of 240 separate bids/pricing options. • Completed PROMOD IV dispatch analysis and economic assessment of 6,U00 l�fW portfolio af coal and natural gas-fueled resaurces operadng in the blidwest ISO market region. Developed expected operations,cost,market sales and revenue forecasts for portfolio assets, �� ROGER SCHIFFMAN PAGE 3 under several market scenarios. Prepared Independent Market Report for potenrial use in Offering Memorandum. • Completed detailed re�rie�� of California lSO ancillars� services markets, and opportunity for renewable ener��y� and energy storage markets to pardcipate in those markets. Analysis induded assessment of day-ahead,hour-ahead,and real-time market operadon. • Completed dispatch modeling and power suprly planning study examining construction of a pumped storage hydro pr.oject in Hawaii. The evaluarion included assessments of project rcvenue in energy, ancillary services, and capacit}� markets in Hawaii, expected dispatch and operation of the pumpecl storagc projcct, and comparison of long-tcrm power supply plans with and without addidon of the pumped storage project. • C:ompleted deliverabiliry and congestion analysis of wind energy resources being located in California. Deceloped nodal market simulations, and examined locational tnarginal price differences, congestion components, and transmission line loadings of facilities impacted by thc wind assets being studied. • Completed detailed financial and dispatch modeling (determinisric and stochastic) of energy stora�e projcct being developed in Southcrn California, to create dispatch profile and estimated long-term project value of the faciliry. The evaluation included assessments of project revcnue in energy,ancillary sen�iccs,and capacit��markets in Southern California. • Completed dispatch analysis and financial modeling of pumped storage hydro project in Colorado, for use in regulatory proceedings. The evaluation included assessments of project revenue in energy,ancillary•sen�ices,and capaciry markets in Colorado. • Completed nodal power price forecast and assessment of high voltage transmission upgrades and addidons in Southern California. This project included an asscssment of congcsdon, locational marginal pricing, transmission sy�stem losses,and economic impacts of adding new transmission facilides in WECC,with particular focus on Southern California. PRObZOD IV was used to complete the nodal market analysis, and PROMOD simulation results were translated into GF_,-PSI.F for more detailed transmission system modeling of power flow cases under a variet�>of supply and demand conditions throughout the year. • Completcd PROMOD IV dispatch and economic analysis of Lodi Energy Center,with iocus upon expected dispatch of the project, and its tit into the overall power supply portfolio of a Southern California Municipal Urility. • Completed PROil20D IV dispatch analysis of a 100 1�1�X/ biomass project in Florida, with focus upon expected dispatch and market revenue for the project in Florida wholesale power markets. Prepared Independent Market Report far use in financing construction of this project. • Completed PROMOD IV market price forecasts and detailed analyses of power markets in all North American re�ions, including hourly enerpy price forecasts, annual capacity price forecasts,and detailed assessment of supply/demand condirions and generator dispatch. The assessments included forecasts of renewable energy development in each re�ion/submarket, forecast greenhouse gas regulation, and economic assessment of fossil and renewable ener�� technolo�ies. 32 ROGER SCHIFFMAN PAGE 4 ['tc�c:�.�'xesic%nf, T-c�ratb�, Irac•., 5azer�zxrzs•rzzc�, C;�, .J�zrr��2(JlI?tc� �Vt,arcl��tI119 • Managed project and led analysis for consortium of upper Midwest utilities focused on de��eloping plans for long-term transmission expansion to ensure reliability in the region and to accommodatc economic transfer of large-scale urind-based electricity generation. This project examined congesrion, reliabilit�� and economic benefits associated with large-scale wind generation expansion in the upper Midwest, and accompanying needs for. transmission system expansion. Evaluation was completed on both n<:�dal and zonal basis. • Assisted investor-owned utility in the upper 1Vlidwest in complerin�an economic transmission planning study consistent with I^�RC requiremcnts. Pro�nded guidance to client in establishing study framework,and in completing detailed technical evaluauon of transmission upgrade projects. Provided assistance�uith stakeholder group interactions and debriefing. • Conducted study for Western Area Powcr Administrauon examining economic impacts of wind projcct intcp,ration from new wind projects located on Native American lands. ���orked with multi-party stakeholdcr group in completing study. Spccific focus was upon power system modeling and economic evaluation of lon�-term costs and benefits of wind energy intcgration into the WAPr�system. • Developed projecrions of expected dispatch,rcvenue,and operating costs for new combined- cycle power plant undcr development in Southern California. Prepared financial projections under merchant plant and other likely cconomic scenarios. Completed evaluation of tolling agreement terms and conditions. • Assisted Southern California ener�y supplier in completing due diligence analysis for investment and dcvelopmcnt of 30(1-700 i�1W' wind generarion project located in Central/Southcrn California. Revie��%ed due diligence documents and complcted economic c:valuarion of expected revenue,operating costs and investment cash fla�x-s for the project at a range of capacities varying from 1001�1W to 500 lfW. 1�rr<Ycrtzr•, ��ftrr�;r�r�t �'rlr�sulzez�w, I��c-., Srz<-rr:trr�taztt��, GA, A�arr'J, 2t1tI11 rr�.j�rrt�; ZO{17 • Responsible for managing the price forecasring subrracrice within Navigant Consulring's Energy Market .Assessment group. Responsibilities included a wide variet}'of engagements focused on evaluating wholesale power.market condirions. Completed mar.ket assessment and simularion studies of a11 North American regional power markets, including Canada and Me�co. • Created and Developed NCI's PROS�'M market simulation pracrice and capabil.ities in modeling �w'F,CC and F..astern Interconnected markets. Completed numerous market simularion and assesstnent engagements throu�hout r.he U.S. co��ering all North American market re�,rions. • ��1ith a team of consultants, assisting the California EnergS> Commission in defining and evaluating scenarios for its 2007 Integrated Energy Plan. Reviewing market simulation results from each of the scenarios and completing analysis of industry and consumer risks likely to be faced in California over the next decade(ongoin�. • Directed NCI's market simularion efforts as independent consultant to the State of California Depar.tment of Water Resources,leading to the successful underwriting of�11 billion in bond financing and supporting the execution of power supply agreements aggregaring to over 1,),OOO Lti1.N�. 3� ROGER SCHIFFMAN PAGE 5 • Develaped projections of lost revenue and operating profits due to construcdon delays at a large combined-cycle project in the Desert Southwest. Prepared evaluadon of WECC power market condidons during the constnzction period for this project, and completed powcr market simulations used to measure likely dispatch, recenue and operadng profits of the projcct during the construction delay period. Successfully presented and defended those cstimates before an Arbitradon Panel,resulting in a significant fivancial award for our client. • Completed PJM iYlarket simtiladons and led analytical support for recent financing of a large coal plant in PJM-West. \x'arked closely with incesttnent banks and rating agencies in identif�-ing and assessing cash flow risks to the project. • Prepared carbon regulation risk assessment of a new coal plant being developed in Nevada,to evaluate long-term potential impacts on project costs. Evaluated ratepayer risks associated with this new project. • Developed and maintained power market simulations to evaluate likel5- dispatch, costs, and spot markct purchases and sales associated with thc California llepartment of �'atcr Resources purchascd power contract portfolio. Results from these simulations have bcen uscd in each of the last five }�ears to support CD��'R's annual revenue requirement filing beforc the California Public Utilides Commission. Provide on�oing re�ulatory support to CDWR,includin�consultation and limited training of CPUC staff in power inarket modeling. • Directed a number of nationwide inarket simulation and valuauon engagements examining current market value of power plant portfolios owned by Calpine, Mirant, \RG and other independent power producers. VG'orked �vith bond investors to develop refined valuation cstimates for subsets of each portfolio. • Senned on `SG'ECC's Power Simulauon Task Force which was formed to assess available options for the WECC to procure,maintain anci usc a power market simulation database and model in its generadon and transmission planning efforts. Participated in task force meedngs where criteria were developed for selecring a siinulation database and model, and assisted in evaluating proposals submitted to the��BCC task force • Performed power market simularions of Me�co,using NewEnerg,y Associates'l�IarketPower simuladon model. Developed market price forecast and ciispatch analysis of the Altamira II project under a variery of projected fuel market condiuons. Results from these analyses were used by Senior I.enders to evaluate ongoing feasibiliry of the project under its financing terms. Annual updates��ere provided to the lenders. � Assisted a California investor-owned utilita in conducting RFP and in evaluaring bids received far shart-term and medium-tenn power supply contracts. Developed cost rankings, economic scrcening, risk asscssment and prcferred bid cvaluations, and assisted the utility's planning and bid evaluation staff in presenting results to the company's senior management. • Developed WECC market simulations and assessment of investment conditions for numerous clients used in feasibility analysis and financing support of new generarion projects being developed in Vi/ECC markets. Thcse analyses included separate evaluation of power market conditions in California, Me�co (Baja), Arizona, Colarado, Nevada, Oregon, W'ashington,British Columbia,and Alberta. • Reviewcd and verified long-term resource plans of a major investor-owned urility located in the Descrt Southwest re�ion. Conductcd powcr markct simuladons of preferred and compering resource plans and devcloped relative ranking of results. 34 ROGER SCHIFFMAN PAGE 6 ��+c�rzitlr�Cr�r�srz�r,ar�t, ��err�vc�<1cJ�F;rac�r;�y' 4cyx•i�rt;c�s, Ir�c-., Sa�:�r.�rrr��ztt<j, G,4., 1��8 tt�2(I(1(I • Prepared numerous forecasts of wholesale market electriciry prices using Henwood's proprietarS�market simulation tools. Drafted reports presenting price forecasts to consulting clients. Worked closely with clients and sponsors of new merchant power plants to provide customized market pricc forecasts and to sen e individual client needs. Presented study results to clients and their constituents. • Directed project evaluarion and revenue forecast for major mcrchant power plant in Texas. Presented revenuc forecast to investment bankers, and to several potenrial equiry investors. Advised and worked with project developer to succcssfully obtain debt and equiry financing for the project,which is currendv under construction. • Con<lucted economic study of market rules and entry barriers faced bp developers of ne�v merchant power rlants in domesdc electricity markets. Applied study results to specific conditions in Texas. Met with a vaiiety of industry rcpresentatives in Texas including project developers, transmission scrcrice providers, power marketers, utility regvlators and environmental re�ilators to gather market intelligence and develop study conclusions. • Advised and worked with PricewatcrhouseCoopers to perform economic evaluation and market simulauons of proposed Purchase Power Arrangements under developmcnt in Alberta, Canada. The Power Purchase Arrangements are to be sold at auction in coming months. Prepared economic stud��of market po��-er held by incumbent electricity suppliers in Alberta. • Dcveloped software and modeling tools to esrimate investment cash fl�ws and pro forma financial results for ncw merchant power plants. Developed Henwood approach for evaluatin�profitability-of new market cntrants and incorporatin�equilibrium amounts of new entry-in its market studies. '�c rarczr��ixFatic•r"rr!_�tr:�lti•st. PxxX�/xc Sc�rr r`ce t�"czxxirrir4str�xr rit'�t''.r`scc�rt,s.irz, <��rclisan, �i'`I. :1�9t?rs�_I9�8 • Devcloped policy proposals for restnicturing wholesale and retail electricit�� mar.kets. F.valuated competing policy pr.oposals for impacts upon consumers and upon electrical system operauon. Drafted formal electricit�- industry restrucniring polic� adopted by the Wisconsin Commission. • Devcloped policies for addressing wholcsalc and retail market power in Primerg5� and Interstate Energy Corporation mcrger cases. Evaluatecl feasibiliry and corporate finance implications of asset divesdture and spin-off options far mitigating market power. • l�resenr.ed evaluation of proposed electric utility merger legislation to subcommittee of ��Jisconsin legislature. t�d`�ised individual legislators on merger.polic��. • Developed policy proposal and draft legislation for refornun�power plant siung law and for allo�ving development of neu�merchant po�x�er plants in Vi/isconsin. • Directed industry-wide efforts to revise d�e PSCW generation competidve bidding procedures. Conducted warkshops on proposed re��isions Eor uril.iry and other industry participants. Drafted policy refoxms adopted by the\X�isconsin Commission. � Conducted primary economic and en�nneering analysis of power plant proposals submitted in generation compedtive bidcling cases. Preparcd financial analyscs of kev contract terms and risks. Evaluated economic and engineering characteristics of bid proposals using production 35 ROGER SCHIFFMAN PAGE 7 cost and system expansion computer modeling. Recommended preferred projects to ��/isconsin Commission. • Completed nuineraus financial analyses of new stock and bond issuances b3� VG'isconsin iuvestor-owned utilities to evaluate investment risks and impacts upon the corporation. Drafted formal administrauve orders authorizing each issuance. I;�ese�atcta..:tssi.st:�r-zt, Zi.ri.rc-ct5ltyrr�l�I�i;;c°cixz�5zzr,.tYl3(JCSf.1.XIy iY':I, .1.9�Y��.;l��11 • Co-authored and provided research surport for study of consolidation and mergers in the electric utility industry. EDUCATION Clniverrity of[i%i.rcon.cin-Madison • Uraduate Studies toward MS-Finance,September 1988-May 1990. • Bachelor of Business Administration,Financc,Investment and Banking,May 1988. • Curriculum concentrated heavily upon financial cconomics, vvith additional emphasis upon economics,mathematics,and accounting. PUIiI..1CATION5 Electric L�tility Me�gers urtd Regulatoy Pofic��, Ray, Stevenson, Schiffman, Thompson. l��ational Regulatory Resear.ch Institute, 1992. "I'he Futur•e of i�'i.re•on,citr's Electric Po�ver Iridustry:F,savironmentad Isrrj�uct Statement, co- author, Public Service Commission of�X�isconsin, October 1995, Docket 05- F.,I-114. Ke�orl to tbe Gove�nor�on F.lectric Keliabilit��, co-author., Public Service Commission of Wisconsin,Summer 1997. �� ROGER SCHIFFMAN PAGE 8 TESTIMONY Public Service Commission of Wisconsin, Docket 6630-UR-104, Wisconsin Electric Power Company Rate Case, 1990, "Rate of Keturn on Equiry, Cost of Capital and Financial Condition." Public Service C;ommission of Wisconsin, Docket 6690-UR-106, Wisconsin Public Sen�ice Corporation Rate Case, 1991, "Rate of Return on Equity, Cost of Capital and Financial Condition." Public Service Commission of Wisconsin, Docket 4220-UR-105, Northern States Power Company (Wisconsin) Rate Case, 1991, "Rate of Return on Equin�,Cost of Capital and Financial Condiuon." Public Service Commission of Wisconsin, Rate of Return on Equity, Cost of Capital and Financial Condition, ��Uisconsin Electric Power Company, Docket C630-UR-10�,Public Service Commission of Wisconsin, 1991 Public Service Commission of`�'isconsin, Docket 05-EP-6, Advance Plan 6, 1992, "1llignment of Managerial Interests and Incentives with Integrated Resource Planning Goals"(with Paul Newman). Public Service Commission of Wisconsin, Docket 6680-UR-107, Wisconsin Power&I.ight Company Rate Case, 1992, "Rate of Return on Equity�, Cost of Capital and Financial Condition." Public Service Commission of Wisconsin, Docket 4220-UR-106, Northern States Power Company (Wisconsin) Rate Case, 1992, "Rate of Return on Equity,Cost of Capital and Financial Condition." Public Service Commission of ��lisconsin, Docket 6630-UR-106, \X'isconsin Electric Po�ver Company Rate Case, 1992, "Rate of Return on Equiry, Cost of Capital and Financial Condition." Public Service Commission of Wisconsin, Docket 05-EI-112, Investigauon on the Commission's Own Motion Into Barriers to Contracts Between Elcctric Utilities and Non-litility Cogenerators and Certain Related Policy-Issues, 1992, "Contract Risk in Long-Term Purchase Power Arrangements." Public Setvice Commission of Wisconsin, Docket 3270-UR-106, Madison Gas and Electric Company Rate Case, 1993, "Rate of Return on F_.ytuty, Cost of Capital and Financial Condition." 37 ROGER SCHIFFMAN PAGE 9 T�STIMOI�TY (CONTIl\TI1ED) Public Service Commission of Wisconsin, llocket G630-CE-187, Wisconsin Electric Po��ver Compan}', 1993, "Memorandum to Commission Presendng Economic Analysis of Competitively Bid Proposals for New Power Plants" (co-authored). Public Service Commission of Wisconsin, Docket 6680-UR-108, Wisconsin Power& I.ight Company Rate Case, 1993, "Rate of Return on Equit��, Cost of Capital and Financial Condition." Public Sei-��ice Commission of Wisconsin, Docket 4220-UR-107, Northcrn States Power Company (��fisconsin) Rate Case, 1993, "Rate of Retum on Equity,Cost of Capital and Financial Condition." Public Service Commission of �X%isconsin, Docket 6630-CT,-202, Wisconsin Electric Power Company Auburn to Butternut Transmission I�ine Case, 19)4, ".F..conomic Cost Camparison of Tr.ansmission Upgrade and Distributed Generation`X�ind Turbine Project." Public Ser�-ice Commission of Wiscansin, Docket 3270-liR-107, l�iadison Gas and Electric Company, 1994 "Rate of Return on Equity, Cost of Capital and Financial Condition." Public Ser�>ice Commission of Wisconsin,. Docket 6690-CF.-15(, Application of VG'isconsin Public Service Corporation for Authoriry to Increase Electric Gencrating Capacity (Stage One Competidon r'�nong Alternative Suppliers), 1994 & 1995, "Economic Analysis of Competitively Bid Power Plant Proposals" (with Paul Newman), "Contr.act Risk in Purchased Power �rrangements," "Accounting Treatment for Long-Term Purchased Po�ver Contracts," "Contract Risk and Analysis of True-Lp Mechanisms and Balancing Accounts." Public Service Commission of Wisconsin, Docket 6630-U1�4-100/4220-UM- 101, ��/isconsin Electric Power Company/Northem States Power Companv Merger Case, 1996, "Mar.ket Power Remedies; State/Federal Jurisdictional lssues." Public Service Commission of Wisconsin, Docket 05-EP-7, Advance Plan 7, 1�)6, "Risk-Adjusteci Discount Ratcs." � �S ROGER SCHIFFMAN PAGE 10 TEST)^MONY {,CONTIvNUED)_____.______._.__�_____�._..._.___.��.....�__e___._._.__.____..___._.,� Public Service Commission of ��'isconsin, Docket 6680-UM-100, �'1'L I�oldings/IES Industries/Interstate Power i�Ierger Case, 1)97, "Market Power Remedies;State/Federal Jurisdictional Issues." Public Service Commission of VG'isconsin, llocket 6630-LTR-110, VZlisconsin Electric Power Company Kate Case, 1997, "Rate of Return on Equity, Cost of Capital and Financial Condition." Public Sernice Commission of Wisconsin, Docket 05-�P-8, r�dvance Plan S, 1997, "Purchased Power Costs, Supply Planning Risks and Supply Planning Parameters." North llakota Public Service Commission, Docket No. PU-399-01-186, Montana-Dakota Utilitics Co., 2000 Electric Operations Annual Report (Commission Investigaaon of Excess Earnings), February> 2002, "Whalesale power market conditions in the upper midwest,and the impact on the level and profitability of off-s`stem sales for�4ontana-Dakota Utilities Co." California Public Udlides Commission, Rulemaking 02-01-011 Implementation of the Suspension of Direct.Access Pursuant to Assemblp Bill 1X and Decision 01-09-0. June, 2002. "Rebuttal Testimony of Roger Schiffman on behalf of the California Department of Water Resources: Market modeling issues." D'v'ashington DC Arbitration Panel, `Bstimate of lost energy sales and lost revenue due to construction delay" for t�vo new combined cycle projects that were built in i�lichigan and Arizona markets,January-February,2006. ' �� �a