31 RegionSites Required Annual Energy (GWH) Average Capacity Factor (%) Inside Study Footprint69986,92947.3% Outside Study Footprint1,176121,45639.3% Total1,875208,38442.3% High Capacity Factor Scenario
32 Summary Comments Pre-Selected capacity represents existing and planned sites rounded up to nearest 30 MW. -Ignore “planned” sites in Scenario creation. How much capacity can be reasonably exported (imported) at each area? Assume constant energy between scenarios rather than constant number of plants: Avg Wyoming C.F/Avg Arizona Plant = 49.1/32.0 = 1.53 ~Roughly 2 MW of wind in Wyoming produces the same energy as 3 MW of wind in Arizona. Initial Study Scenarios:Baseline (I.e. Pre-Selected Sites) High Renewables: - In Area Subsequent Scenarios:High Capacity Factor “Constrained” High Capacity Factor
33 Summary Comments Transmission costs estimated at $1350/MW mile. New Wind plant costs estimated at $1750/KW. Therefore saving a MW of wind capacity would pay for roughly 1300 miles of transmission. Phoenix, AZ to central Wyoming is about 650 miles, so a MW of Wind capacity would pay for the cost of 2 MW of transmission.