Investor Presentaiton

Benefits of Electric Vehicles CO $45 NPV Cumulative Net Benefits from Plug-in Vehicles in Colorado (High PEV Scenario- Off-peak Charging - Low Carbon Electricity) $ billions Colorado Driver Savings $40 ■■Utility Customer Benefits $35 ■Social Value of CO2 Reductions $30 $25 $20 $15 $10 $5 $0 2030 2035 2040 2045 2050 Source: M.J. Bradley & Associates, Electric Vehicle Cost-Benefit Analysis COLORADO

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