Exhibit A-1 New COPA 2011 POWDER RIVER ENERGY CORPORATION CALCULATION OF COPA FACTOR FOR 2011
Amount 1 2 3 4
Remainder of System Projected Cost of Power for 2011 (Exhibit B-1, Page 2) Less: Projected LPT Power Cost (L12) Less: LPT CBM Power Cost (L21) Remainder System Power Cost
134,944,113 54,446,288 6,718,259 73,779,565
5 Base Power Cost In Rates $/kWh Sold (Proposed tariff) 6 Projected kWh Sold for 2011 7 Base Power Cost in Rates $
0.043640 1,555,482,000 67,881,234
8 Recoverable Power Cost (L4 - L7) 9 (Over)/Under Recovery for 2010 (Exhibit D) 10 Total Amount to Include in COPA for 2011
5,898,331 -1,547,063 4,351,268
11 Calculated COPA Factor for 2011 (L10/L6)
0.002797
12 13 14 15 16
Large Power Transmission - LPT Projected LPT Power Cost for 2011 (Exhibit C-1) LPT Base Power Cost In Rates: (Proposed tariff) Base Demand Charge NCP Billed @ Meter Base Energy Charge kWh Billed @ Meter Total LPTC Base Power Cost in Rate
Projected Billing Unit 54,446,288 2,511,534 1,244,598,000
9.47 0.021164
17 LPT Recoverable Power Cost (L12 - L16) 18 (Over)/Under Recovery for 2010 (Exhibit D) 19 Total Amount to Include in LPT COPA for 2011 20 LPT COPA Factor for 2011 (L19/ kWh Sold for Class) Large Power Transmission - LPT-CBM 21 Projected LPT Power Cost for 2011 (Exhibit C-2) 22 LPT Base Power Cost In Rates: (Proposed tariff) 23 Base Demand Charge CP Billed @ Meter 24 Base Energy Charge kWh Billed @ Meter 25 Total LPTC Base Power Cost in Rate
4,321,389 13,437 4,334,827 1,244,598,000
0.003483
6,718,259 220,978 158,730,000
26 LPT Recoverable Power Cost (L21 - L25) 27 (Over)/Under Recovery for 2010 (Exhibit D) 28 Total Amount to Include in LPT COPA for 2011 29 LPT COPA Factor for 2011 (L28/ kWh Sold for Class)
23,784,227 26,340,672 50,124,899
12.29 0.021422
2,715,814 3,400,314 6,116,128 602,132 -18,474 583,658
158,730,000
0.003677