| 2016 | Power purchase agreement Purchased | 14,000,000 | kWh |
| 2016 | Power purchase agreement Verification | Other | |
| 2017 | Utility green pricing Purchased | 14,634,450 | kWh |
| 2017 | Utility green pricing Verification | Other | |
| 2018 | Utility green pricing Purchased | 15,510,529 | kWh |
| 2018 | Utility green pricing Verification | Other | |
| 2019 | Utility green pricing Purchased | 12,339,000 | kWh |
| 2019 | Utility green pricing Verification | Other | |
| 2020 | Voluntary unbundled RECs Purchased | 12,460,771 | kWh |
| 2020 | Voluntary unbundled RECs Verification | Green-e | |
| 2021 | Voluntary unbundled RECs Purchased | 12,059,662 | kWh |
| 2021 | Voluntary unbundled RECs Verification | Green-e | |
| 2022 | Voluntary unbundled RECs Purchased | 13,924,154 | kWh |
| 2022 | Voluntary unbundled RECs Verification | Green-e | |