| Year | Source | Reference Rate | Credit | Adj. Factor |
| 2005 | Wind | 4.85 cents/kWh | 1.9 cents/kWh | 1.2528 |
| Refined Coal | $36.36/ton | $5.481/ton | 1.2528 | |
| Closed-Loop Biomass | N/A | 1.9 cents/kWh | 1.2528 | |
| Open-Loop Biomass | N/A | 0.9 cents/kWh | 1.2528 | |
| Geothermal | N/A | 1.9 cents/kWh | 1.2528 | |
| Solar | N/A | 1.9 cents/kWh | 1.2528 | |
| Small Irrigation | N/A | 0.9 cents/kWh | 1.2528 | |
| Municipal Solid Waste | N/A | 0.9 cents/kWh | 1.2528 | |
| Qualified Hydropower | N/A | 0.9 cents/kWh | 1.2528 | |
| Year | Source | Reference Rate | Credit | Adj. Factor |
| 2006 | Wind | 2.89 cents/kWh | 1.9 cents/kWh | 1.2981 |
| Refined Coal | $42.78/ton | $5.679/ton | 1.2981 | |
| Closed-Loop Biomass | N/A | 1.9 cents/kWh | 1.2981 | |
| Open-Loop Biomass | N/A | 1 cent/kWh | 1.2981 | |
| Geothermal | N/A | 1.9 cents/kWh | 1.2981 | |
| Solar | N/A | 1.9 cents/kWh | 1.2981 | |
| Small Irrigation | N/A | 1 cent/kWh | 1.2981 | |
| Municipal Solid Waste | N/A | 1 cent/kWh | 1.2981 | |
| Qualified Hydropower | N/A | 1 cent/kWh | 1.2981 | |
| Year | Source | Reference Rate | Credit | Adj. Factor |
| 2007 | Wind | 3.29 cents/kWh | 2 cents/kWh | 1.3433 |
| Refined Coal | $48.35/ton | $5.877/ton | 1.3433 | |
| Closed-Loop Biomass | N/A | 2 cents/kWh | 1.3433 | |
| Open-Loop Biomass | N/A | 1 cent/kWh | 1.3433 | |
| Geothermal | N/A | 2 cents/kWh | 1.3433 | |
| Solar | N/A | 2 cents/kWh | 1.3433 | |
| Small Irrigation | N/A | 1 cent/kWh | 1.3433 | |
| Municipal Solid Waste | N/A | 1 cent/kWh | 1.3433 | |
| Qualified Hydropower | N/A | 1 cent/kWh | 1.3433 | |
| Indian Coal | N/A | $1.544/ton | 1.0293 | |
| Year | Source | Reference Rate | Credit | Adj. Factor |
| 2008 | Wind | 3.6 cents/kWh | 2.1 cents/kWh | 1.3854 |
| Refined Coal | $45.56/ton | $6.061/ton | 1.3854 | |
| Closed-Loop Biomass | N/A | 2.1 cents/kWh | 1.3854 | |
| Open-Loop Biomass | N/A | 1 cent/kWh | 1.3854 | |
| Geothermal | N/A | 2.1 cents/kWh | 1.3854 | |
| Solar | N/A | 2.1 cents/kWh | 1.3854 | |
| Small Irrigation | N/A | 1 cent/kWh | 1.3854 | |
| Municipal Solid Waste | N/A | 1 cent/kWh | 1.3854 | |
| Qualified Hydropower | N/A | 1 cent/kWh | 1.3854 | |
| Indian Coal | N/A | $1.589/ton | 1.0591 | |
| Year | Source | Reference Rate | Credit | Adj. Factor |
| 2009 | Wind | 4.32 cents/kWh | 2.1 cents/kWh | 1.4171 |
| Refined Coal | $39.72/ton | $6.20/ton | 1.4171 | |
| Closed-Loop Biomass | N/A | 2.1 cents/kWh | 1.4171 | |
| Open-Loop Biomass | N/A | 1.1 cent/kWh | 1.4171 | |
| Geothermal | N/A | 2.1 cents/kWh | 1.4171 | |
| Solar | N/A | 2.1 cents/kWh | 1.4171 | |
| Small Irrigation | N/A | 1 cent/kWh | 1.4171 | |
| Municipal Solid Waste | N/A | 1 cent/kWh | 1.4171 | |
| Qualified Hydropower | N/A | 1 cent/kWh | 1.4171 | |
| Indian Coal | N/A | $1.625/ton | 1.0830 | |
| Steel Industry Fuel | N/A | $2/barrel | N/A |