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Addendum: Scenario 4 — Greater Local Renewable <br /> Development Scenario <br /> Based on feedback from the Steering Committee,the MRW Team developed a fourth scenario. <br /> This scenario is based on Scenario 2: 50% of its load through renewable power starting from <br /> 2017, while 50%of its non-renewable load is met through hydro-electricity (i.e., overall 50% <br /> qualifying renewable. 25%hydro, 25%fossil or market), but with an increased emphasis on in- <br /> county renewable development. For this case, we assumed that one-half of the CCA's total <br /> renewable requirement would be met by in-county resources by the year 2030. <br /> This constitutes a very aggressive scenario. The amounts of new in-county renewables assumed <br /> are unprecedented, and without a detailed study as to the technical, economic and achievable <br /> penetration of local solar, it should be seen as speculative. As such,the results are more <br /> uncertain than the prior three scenarios.Nonetheless, it points to the possibility that even greater <br /> local economic development benefits and employment if indeed greater local renewable <br /> development can be achieved. <br /> Supply Resources <br /> Figure 1 shows the assumed build-out of new renewable resources under Scenario 4. The local <br /> renewable generation starts in 2017, linearly ramping(80 MW per year)up to 50%of the CCA's <br /> renewable total by 2030 (900 MW). Consistent with the other scenarios,we considered in-county <br /> renewable generation to consist of small-and utility-scale solar. <br /> At the June 1 Steering Committee meeting, a preliminary version of this scenario was presented. <br /> This final version differs from that preliminary one in two ways. First,the preliminary version <br /> did not assume any phase-in. I.e., 50% local renewables was available at the same rate as CCE <br /> participants phased-in. The final version phases in the new local renewables such that 50% is <br /> ultimately achieved in 2030. Second,the preliminary version assumed that 50%of the TOTAL <br /> load was being met by local renewables, not simply 50%of the renewable component. Thus, the <br /> final Scenario 4 contains less renewables and thus lower costs than the preliminary version <br /> presented at the Steering Committee Meeting. <br /> 2 <br /> • <br />