| 2005 | Total Purchased Electricity Consumption | 96,873,546 | kWh |
| 2005 | Voluntary unbundled RECs Purchased | 7,500,000 | kWh |
| 2005 | Voluntary unbundled RECs Verification | Green-e | |
| 2006 | Total Purchased Electricity Consumption | 100,941,663.6 | kWh |
| 2006 | Voluntary unbundled RECs Purchased | 15,000,000 | kWh |
| 2006 | Voluntary unbundled RECs Verification | Green-e | |
| 2007 | Total Purchased Electricity Consumption | 105,619,824 | kWh |
| 2007 | Voluntary unbundled RECs Purchased | 19,948,980 | kWh |
| 2007 | Voluntary unbundled RECs Verification | Green-e | |
| 2008 | Total Purchased Electricity Consumption | 108,612,776.4 | kWh |
| 2008 | Voluntary unbundled RECs Purchased | 55,861,500 | kWh |
| 2008 | Voluntary unbundled RECs Verification | Green-e | |
| 2009 | Total Purchased Electricity Consumption | 108,618,384 | kWh |
| 2009 | Voluntary unbundled RECs Purchased | 86,825,040 | kWh |
| 2009 | Voluntary unbundled RECs Verification | Green-e | |
| 2010 | Total Purchased Electricity Consumption | 114,822,999.6 | kWh |
| 2010 | Voluntary unbundled RECs Purchased | 103,162,500 | kWh |
| 2010 | Voluntary unbundled RECs Verification | Green-e | |
| 2011 | Total Purchased Electricity Consumption | 115,775,000.4 | kWh |
| 2011 | Voluntary unbundled RECs Purchased | 117,750,000 | kWh |
| 2011 | Voluntary unbundled RECs Verification | Green-e | |
| 2012 | Total Purchased Electricity Consumption | 117,858,000 | kWh |
| 2012 | Voluntary unbundled RECs Purchased | 116,000,040 | kWh |
| 2012 | Voluntary unbundled RECs Verification | Green-e | |
| 2013 | Total Purchased Electricity Consumption | 118,756,832.4 | kWh |
| 2013 | Voluntary unbundled RECs Purchased | 115,812,000 | kWh |
| 2013 | Voluntary unbundled RECs Verification | Green-e | |
| 2014 | Total Purchased Electricity Consumption | 117,971,464.2 | kWh |
| 2014 | Voluntary unbundled RECs Purchased | 117,312,000 | kWh |
| 2014 | Voluntary unbundled RECs Verification | Green-e | |
| 2015 | Total Purchased Electricity Consumption | 123,416,635.4 | kWh |
| 2015 | Voluntary unbundled RECs Purchased | 119,000,040 | kWh |
| 2015 | Voluntary unbundled RECs Verification | Green-e | |
| 2016 | Total Purchased Electricity Consumption | 126,589,090 | kWh |
| 2016 | Voluntary unbundled RECs Purchased | 128,269,020 | kWh |
| 2016 | Voluntary unbundled RECs Verification | Green-e | |
| 2017 | Total Purchased Electricity Consumption | 126,641,479 | kWh |
| 2017 | Voluntary unbundled RECs Purchased | 133,269,000 | kWh |
| 2017 | Voluntary unbundled RECs Verification | Green-e | |
| 2018 | Total Purchased Electricity Consumption | 132,268,830 | kWh |
| 2018 | Voluntary unbundled RECs Purchased | 129,499,980 | kWh |
| 2018 | Voluntary unbundled RECs Verification | Green-e | |
| 2019 | Total Purchased Electricity Consumption | 127,755,556.96 | kWh |
| 2019 | Voluntary unbundled RECs Purchased | 132,000,000 | kWh |
| 2019 | Voluntary unbundled RECs Verification | Green-e | |
| 2020 | Total Purchased Electricity Consumption | 116,534,172 | kWh |
| 2020 | Voluntary unbundled RECs Purchased | 126,991,020 | kWh |
| 2020 | Voluntary unbundled RECs Verification | Green-e | |
| 2021 | Total Purchased Electricity Consumption | 109,332,718.96 | kWh |
| 2021 | Voluntary unbundled RECs Purchased | 116,866,020 | kWh |
| 2021 | Voluntary unbundled RECs Verification | Green-e | |
| 2022 | Total Purchased Electricity Consumption | 116,451,891 | kWh |
| 2022 | Voluntary unbundled RECs Purchased | 121,375,020 | kWh |
| 2022 | Voluntary unbundled RECs Verification | Green-e | |
| 2023 | Total Purchased Electricity Consumption | 115,284,328.6 | kWh |
| 2023 | Voluntary unbundled RECs Purchased | 121,885,000 | kWh |
| 2023 | Voluntary unbundled RECs Verification | Green-e | |
| 2024 | Total Purchased Electricity Consumption | 114,069,925 | kWh |
| 2024 | Purchased Thermal Energy | 331,338 | MMBtu |
| 2024 | Voluntary unbundled RECs Purchased | 114,070,000 | kWh |
| 2024 | Voluntary unbundled RECs Verification | Green-e | |
| 2025 | Total Purchased Electricity Consumption | 115,029,546.29 | kWh |
| 2025 | Purchased Thermal Energy | 336,167 | MMBtu |
| 2025 | Voluntary unbundled RECs Purchased | 115,030,000 | kWh |
| 2025 | Voluntary unbundled RECs Verification | Green-e | |