| 2007 | Total Purchased Electricity Consumption | 76,935,086 | kWh |
| 2007 | Voluntary unbundled RECs Purchased | 1,923,000 | kWh |
| 2007 | Voluntary unbundled RECs Verification | Not verified | |
| 2008 | Total Purchased Electricity Consumption | 77,768,545 | kWh |
| 2008 | Voluntary unbundled RECs Purchased | 3,797,000 | kWh |
| 2008 | Voluntary unbundled RECs Verification | Not verified | |
| 2009 | Total Purchased Electricity Consumption | 75,667,507 | kWh |
| 2009 | Voluntary unbundled RECs Purchased | 12,000,000 | kWh |
| 2009 | Voluntary unbundled RECs Verification | Not verified | |
| 2010 | Total Purchased Electricity Consumption | 73,347,643 | kWh |
| 2010 | Voluntary unbundled RECs Purchased | 15,000,000 | kWh |
| 2010 | Voluntary unbundled RECs Verification | Not verified | |
| 2011 | Total Purchased Electricity Consumption | 74,654,675 | kWh |
| 2011 | Voluntary unbundled RECs Purchased | 16,300,000 | kWh |
| 2011 | Voluntary unbundled RECs Verification | Not verified | |
| 2012 | Total Purchased Electricity Consumption | 74,080,865 | kWh |
| 2012 | Voluntary unbundled RECs Purchased | 15,770,000 | kWh |
| 2012 | Voluntary unbundled RECs Verification | Not verified | |
| 2013 | Total Purchased Electricity Consumption | 72,190,628 | kWh |
| 2013 | Voluntary unbundled RECs Purchased | 15,880,000 | kWh |
| 2013 | Voluntary unbundled RECs Verification | Not verified | |
| 2014 | Total Purchased Electricity Consumption | 67,884,650 | kWh |
| 2014 | Voluntary unbundled RECs Purchased | 15,540,000 | kWh |
| 2014 | Voluntary unbundled RECs Verification | Not verified | |
| 2015 | Total Purchased Electricity Consumption | 65,200,085 | kWh |
| 2015 | Voluntary unbundled RECs Purchased | 15,340,000 | kWh |
| 2015 | Voluntary unbundled RECs Verification | Not verified | |
| 2016 | Total Purchased Electricity Consumption | 64,976,351 | kWh |
| 2016 | Voluntary unbundled RECs Purchased | 15,600,000 | kWh |
| 2016 | Voluntary unbundled RECs Verification | Not verified | |
| 2017 | Total Purchased Electricity Consumption | 65,344,417 | kWh |
| 2017 | Voluntary unbundled RECs Purchased | 19,600,000 | kWh |
| 2017 | Voluntary unbundled RECs Verification | Not verified | |
| 2018 | Total Purchased Electricity Consumption | 65,073,063 | kWh |
| 2018 | Voluntary unbundled RECs Purchased | 21,691,000 | kWh |
| 2018 | Voluntary unbundled RECs Verification | Not verified | |
| 2019 | Total Purchased Electricity Consumption | 67,104,447 | kWh |
| 2019 | Voluntary unbundled RECs Purchased | 25,500,000 | kWh |
| 2019 | Voluntary unbundled RECs Verification | Not verified | |
| 2020 | Total Purchased Electricity Consumption | 65,464,443 | kWh |
| 2020 | Voluntary unbundled RECs Purchased | 26,186,000 | kWh |
| 2020 | Voluntary unbundled RECs Verification | Not verified | |
| 2021 | Total Purchased Electricity Consumption | 63,297,762 | kWh |
| 2021 | Voluntary unbundled RECs Purchased | 26,585,000 | kWh |
| 2021 | Voluntary unbundled RECs Verification | Not verified | |
| 2022 | Total Purchased Electricity Consumption | 67,310,837 | kWh |
| 2022 | Voluntary unbundled RECs Purchased | 29,617,000 | kWh |
| 2022 | Voluntary unbundled RECs Verification | Green-e | |
| 2023 | Total Purchased Electricity Consumption | 67,485,359 | kWh |
| 2023 | Voluntary unbundled RECs Purchased | 31,043,000 | kWh |
| 2023 | Voluntary unbundled RECs Verification | Green-e | |
| 2024 | Total Purchased Electricity Consumption | 70,094,826 | kWh |
| 2024 | Voluntary unbundled RECs Purchased | 33,646,000 | kWh |
| 2024 | Voluntary unbundled RECs Verification | Green-e | |