iri inia 1PM Scenario Customer

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1 ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS iri inia 1PM Scenario Customer SI November 9, 2017 BOSTON CHICAGO DALLAS DENVER LOS ANGELES MENLO PARK MONTREAL NEWYORK II SAN FRANCISCO III WASHINGTON

2 genda ECONOMIC, FINANCIAL and MATEGY CONSULTANTS NOVEMBER 9, 2017

3 Overview ECONOMIC FINANCIAL and STRATECY CONSULTANTS ;AG s analysis measures ote tial chan.es in resi ential, commercial, an. in ustrial customer electricity sills usin the Vir.inia efere ce a o1icy Scenario results from ICF The follo in shies resent rojections This analysis rovi es information for r i ia's s:eli.eration of a car : o emission re uction.ro.ram The scenarios revie e are se on t I F mo.elins results an o not reflect a reference for or selection of any s ecific solicy NOVEMBER 9, 2017

4 ethod EcoNomic, FINANCIAL and STFtATEGY CONSULTANTS Calculates the change in the average monthly electricity bill on a customer class average basis between the Virginia Reference Cases and Policy Scenarios Includes adjustment to the average monthly bill by customer class assuming that revenues from allowance consignment auctions are returned to ratepayers based on each customer class's contribution to total annual consumption Savings due to potential demand reduction investments

5 ethos vera e Monthly Ill Impact Calculation ECONOMIC, FINANCIAL.STRATEGY (ONSLILTANTS Firm Power Rate Average onthly Use Average Monthly Bill Reflects firm power prices Modeled by ICF for reference and policy scenario through 2031 Same for all customer classes Delivery (T/D) Rate Reflects cost of delivery of electricity to end-use customer, including transmission, distribution, customer charges, etc. Approximated using public data reported by distribution companies to EIA and P.M wholesale prices in Virginia Calculated for each customer class Approximated based on historical consumption' using public data reported by distribution companies to ElA Five-year average to smooth out annual weather-driven variations; grown over time at historical growth rates Average calculated for each customer class Product of combined customer-class average firm power and delivery rates, and average customer class monthly consumption Adjusted assuming 95% of allowance revenues are applied as a credit to ratepayers on a pro-rata basis across customer classes Average Monthly Bill Impact Difference in average monthly bill, between Reference case and Policy Case

6 ssu tions lectricity ates vera ont sa e Ecor4orac FINANCIAL nd STRATEGY CONSULTANTS ir er ates: IPM model output elive (TI D) ate: Average bundled energy rates from U.S. Energy Information Association (EIA) minus load-weighted annual average dayahead locational marginal prices from PJ Growth in delivery rates approximated based on average growth rate over the past five years ist ric I t ss 5-year average data from EIA 2.1% NOVEMBER 9,

7 State Assumptions Allowance Revenues ECONOMIC, FINANCIAL and STFr.ATNY CONSULTANTS m In our bill impact analysis, for purposes of illustration, we assume that 95% of revenues that accrue to utilities from the sale of carbon allowances or credits are returned to ratepayers 5% of allowance revenues are set aside for electricity demand reduction strategies We assign revenues to customer classes based on share of load For the purpose of this analysis we treat revenues from allowances to inde endent power producers in the same way as those allocate to utilities (Le., revenues returned to ratepayers); however, the benefits from allocations to IPPs may not accrue to ratepayers

8 Firm Power Prices with RGGI Assumptions ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS IPM Modeled Firm Power Prices RGGI Assumptions $ Reference --Policy $0.055 $0.000 $0.005 $0.010 $0.015 $0.020 Firm Power Prices ($2015/1( Wh) $0.025 $0.030 $0.035 $0.040 $0.045 $

9 Firm Power Prices with Virginia Assumptions ECONOMIC FINANCIAL or., 577rt,'. 'TEGY CONSULTANTS IPM Modeled Firm Power Prices RGGI+ VA Assumptions $ Reference' --- PoIicy $0.055 $0.050 $0.045 tr) $0.040 (NI $0.035 $0.030 p $0.025 $0.020 $ $0.010 $0.005 $

10 ECONOMiC FINANCIAL and STRATEGY CONSULTANTS The followin slides show results for the reference case an policy scenario with GGI assumptions from , consistent with the I M mo.eiing timeline. NOVEMBER 9,2017

11 Residential Average Bills Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC, FINANCIAL on STRATEGY CONSULTANTS Average Electric Monthly Bills ($2015) Residential Customers RGGI Assumptions I Reference El Policy NOVEMBER 9,

12 Residential Average Bill Impacts Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS $2.50 Average Monthly Bill Impacts Residential RGGI Assumptions $2.00 Difference in Awrage Monthly Bill ( $2015) $1.50 $1.00 $0.50 $(0.50) $(1.00) NOVEMBER 9,

13 Virginia Average Bill Impacts Policy Scenario with RGGI Assumptions Residential Results ( ) ECONOMIC FINANCIAL and STRATEGY CONSULTANTS Average Bill Impacts VA Residential Customers RGGI Assumptions Year Average Monthly Reference Bill ($2015) Average Monthly Policy Scenario Bill ($2015) Difference between Reference Cases and Scenario Case ($2015) Average Monthly Difference ($2015) Percent Difference 2020 $ $ $ (0.46) -0.3% 2021 $ $ $ (0.02) 0.0% 2022 $ $ $ % 2023 $ $ $ % 2024 $ $ $ % 2025 $ $ $ % 2026 $ $ $ % 2027 $ $ $ % 2028 $ $ $ % 2029 $ $ $ % 2030 $ $ $ % 2031 $ $ $ % Average ( ) $ $ $ % NOVEMBER

14 Commercial Average Bills Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS $1,400 Average Electric Monthly Bills ($2015) Commercial Customers RGGI Assumptions $1,200 $1,000 Awrage Monthly Bill ( $2015) $800 $600 $400 $200 $ Reference Policy NOVEMBER 9,

15 Commercial Average Bill Impacts Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC. FINANCIAL anc, STRATEGY CONSULTANTS $20.00 T Average Monthly Bill Impacts Commercial RGGI Assumptions $15.00 hly Bill ($2015) Difference in Awrage Mont $10.00 $ $(5.00) NOVEMBER 9,2017

16 Virginia Average Bill Impacts Policy Scenario with RGGI Assumptions Commercial Results ( ) ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS Average Bill Impacts VA Commercial Customers RGGI Assumptions Year Average Monthly Average Monthly Policy Difference between Reference Cases and Scenario Case ($2015) Average Monthly Difference (3.82) -0.4% (0.25) 0.0% % % % , % , , % , , % , , % , , % , , % , , % Average ( ) 1, , % Percent NOVEMBER 9,2017

17 Industrial Average Bills Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC, FINANCIAL and 5TRATE,5Y CONSULTANTS $45,000 Average Electric Monthly Bills ($2015) Industrial Customers RGGI Assumptions $40,000 $35,000 $30,000 Monthly Bill ( $ 2015) $25,000 $20,000 $15,000 $10,000 - $5,000 $ Reference 0 Policy NOVEMBER 9,

18 Industrial Average Bill Impacts Policy Scenario & Reference Case with RGGI Assumptions ( ) ECONOMIC, FINANCIAL in STRATEGY CONSULTANTS $800 Average Monthly Bill Impacts Industrial RGGI Assumptions $700 $600 Bill ($2015) Difference in Average Monthly $500 $400 $300 $200 $100 $(100) $(200) $(300) -- NOVEMBER 9,

19 Virginia Average Bill Impacts Policy Scenario with RGGI Assumptions Industrial Results ( ) ALYSIS GROUP ECONOMIC. FINANCIAL and STRATEGY CONSULTANTS Average Bill Impacts VA Indus trial Customers RGGI Assumptions Year Average Monthly Average Monthly Policy Difference between Reference Cases and Scenario Case ($2015) Average Monthly Difference Percent , , (174.22) -0.6% , , (29.28) -0.1% , , % , , % , , % , , % , , % , , % , , % , , % , , % , , % Average ( ) 33, , % NOVEMBER

20 Virginia Average Bill Impacts IPM Scenario Summary Results ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS VA Monthly Bill Impact for Years RGGI Ass umptions Customer Class Residential Commercial Indus trial Reference Case Bill ($2015) ,019A4 33, Monthly Difference Policy Scenario Percent ($2015) Difference % % % NOVEMBER

21 ECONOMIC, FINANCIAL and 5111ATEGY CONS'JLTANTS The folio in sli es show results for the reference c se an..olicy sc ario ia assum.tions from , consistent with the IM mo.elin timeline.

22 Residential Average Bills Policy Scenario & Reference Case with Virginia Assumptions ( ) ECONOMIC FINANCIAL an6 STRATEGY cor4suitanas $250 Average Electric Monthly Bills ($2015) Residential Customers RGGI+ VA Assumptions $200 Awrage Alonthly Bill ($ 2015) $150 $100 $50 $ Reference L2 Policy NOVEMBER 9,

23 Residential Average Bill Impacts Policy Scenario & Reference Case with Virginia Assumptions ( ) ALYSIS tljroup ECONOMIC, FINANCIAL orx, STRATEGY CONSULTANTS $2.50 Average Monthly Bill Impacts Residential RGGI+ VA Assumptions $2.00 $1.50 hly Bill ($2015) Difference in Average Mont $1.00 $0.50 s- $(0.50) $(1.00) $(1.50)

24 Virginia Average Bill Impacts Policy Scenario with Virginia Assumptions Residential Results ( ) ECONOMIC, FINANCIAL ond STRATEGY CONSULTANTS Average Bill Impacts VA Residential Customers RGGI + VA Assumptions Year Average Monthly Reference Bill ($2015) Average Monthly Policy Scenario Bill ($2015) Difference between Reference Cases and Scenario Case ($2015) Average Monthly Difference ($2015) Percent Difference 2020 $ $ (1.06) -0.7% 2021 $ $ (0.55) -0.4% 2022 $ $ (0.04) 0.0% 2023 $ $ % 2024 $ $ % 2025 $ $ % 2026 $ $ % 2027 $ $ % 2028 $ $ % 2029 $ $ % 2030 $ $ % 2031 $ $ % Average ( ) $ $ % NOVEMBER 9, 2017

25 Commercial Average Bills Policy Scenario & Reference Case with Virginia Assumptions ( ) ANALYSIS GRO Tp ECONOMIC FINANCIAL and STRATEGY CON5'..11 Average Electric Monthly Bills ($2015) Commercial Customers RGGI+ VA Assumptions 81,000 Monthly Bill ($2015) Reference Li Policy NOVEMBER 9,

26 Commercial Average Bill Impacts Policy Scenario & Reference Case with Virginia Assumptions ( ) ECONOMIC, FINANCIAL and STRATEL3Y CONSULTANTS $ Average Monthly Bill Impacts Commercial RGGI+ VA Assumptions $15.00 $10.00 $ $(5.00) $( ) $(15.00) - NOVEMBER 9,

27 Virginia Average Bill Impacts Policy Scenario with Virginia Assumptions Commercial Results ( ) ECONOMIC, FINANCIAL and STRATEGY CON5,JLTANT5 Average Bill Impacts VA Commercial Customers RGGI + VA Assumptions Year Average Monthly Average Monthly Policy Difference between Reference Cases and Scenario Case ($2015) Average Monthly Difference Percent (8.73) -1.0% (4.57) -0.5% (0.42) 0.0% % % , , % , , % , , % , , % , , % , , % , , % Average ( ) $ 1, , %

28 Industrial Average Bills Policy Scenario & Reference Case with Virginia Assumptions ( ) ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS $45,000 Average Electric Monthly Bills ($2015) Industrial Customers RGGI+ VA Assumptions $40,000 $35,000 $30,000 Average Monthly Bill ( $2015) $25,000 $20,000 $15,000 $10,000 $5,000 $ Reference 0 Policy NOVEMBER 9,2017

29 Industrial Average Bill Impacts Policy Scenario & Reference Case with Virginia Assumptions ( ) ALYSIS GROUP ECONOMIC, FINANCIAL and STRATEGY CONSULTANTS $800 Average Monthly Bill Impacts Industrial RGGI+ VA Assumptions $600 $400 Difference in Average Monthly Bill ($ 2 015) $(400) $(600)

30 Virginia Average Bill Impacts Policy Scenario with Virginia Assumptions Industrial Results ( ) ECONOMIC FINANCIAL ond STRATNY CONSULTANTS Average Bill Impacts VA Industrial Customers RGGI+ VA Assumptions Year Average Monthly Average Monthly Policy Difference beriveen Reference Cases and Scenario Case ($2015) Average Monthly Difference Percent 9020 $ 28, $ 28, $ (372.08) -1.3% 2021 $ 29, $ 29, $ (203.22) -0.7% 2029 $ 30, $ 30, $ (34.36) -0.1% 2023 $ 31, $ 31, $ % 2024 $ 32, $ 32, $ % 2025 $ 33, $ 33, $ % 2026 $ 34, $ 34, $ % 2027 $ 35, $ 35, $ % 2028 $ 36, $ 37, $ % 2029 $ 37, $ 38, $ % 2030 $ 38, $ 39, $ % 2031 $ 39, $ 40, $ % Average ( ) $ 34, $ 34, $ %

31 Virginia Average Bill Impacts IPM Scenario Summary Results A YSIS GRO ECONOTL1N:, FINANCIAL and 5TR4TS3V CONSULTAN VA Monthly Bill Impact for Years RGGI + VA Assumptions Policy Scenario Reference Case Monthly Difference Percent Customer Class Bill ($2015) ($2015) Difference Residential $ $ % Commercial $ 1, $ % Industrial $ 34, $ % NOVEMBER 9,

32 Virginia Average Bill Impacts IPM Scenario Summary Comparison ECONOMiC, FINANCIAL and STRATEGY CONSULTANTS VA Monthly Bill Impact for Years Reference Case Bill ($2015) RGGI RGGI+ VA RGGI Assumptions Policy Scenario RGGI + VA Assumptions Monthly Difference Percent Monthly Difference Percent Customer Class Assumptions Assumptions ($2015) Difference ($2015) Difference Residential $ $ $ % $ % Commercial $ 1,019A/1 $ 1, $ % $ % Industrial $ 33, $ 34, $ % $ %