| 2014 | Total Purchased Electricity Consumption | 17,820,077 | kWh | 
 | 2015 | Total Purchased Electricity Consumption | 17,820,077 | kWh | 
 | 2016 | Total Purchased Electricity Consumption | 19,227,301 | kWh | 
 | 2017 | Total Purchased Electricity Consumption | 19,637,452 | kWh | 
 | 2018 | Total Purchased Electricity Consumption | 18,734,956 | kWh | 
 | 2018 | Competitive suppliers Purchased | 3,122,000 | kWh | 
 | 2018 | Competitive suppliers Verification | Green-e |  | 
 | 2019 | Total Purchased Electricity Consumption | 18,827,156.9 | kWh | 
 | 2019 | Competitive suppliers Purchased | 18,827,157 | kWh | 
 | 2019 | Competitive suppliers Verification | Green-e |  | 
 | 2020 | Total Purchased Electricity Consumption | 17,779,131 | kWh | 
 | 2020 | Competitive suppliers Purchased | 17,779,131 | kWh | 
 | 2020 | Competitive suppliers Verification | Green-e |  | 
 | 2021 | Total Purchased Electricity Consumption | 18,043,108 | kWh | 
 | 2021 | Competitive suppliers Purchased | 18,043,108 | kWh | 
 | 2021 | Competitive suppliers Verification | Green-e |  | 
 | 2022 | Total Purchased Electricity Consumption | 18,974,071 | kWh | 
 | 2022 | Competitive suppliers Purchased | 18,974,071 | kWh | 
 | 2022 | Competitive suppliers Verification | Green-e |  | 
 | 2023 | Total Purchased Electricity Consumption | 18,573,300 | kWh | 
 | 2023 | Competitive suppliers Purchased | 18,573,300 | kWh | 
 | 2023 | Competitive suppliers Verification | Green-e |  | 
 | 2024 | Total Purchased Electricity Consumption | 17,444,554 | kWh | 
 | 2024 | Competitive suppliers Purchased | 17,444,554 | kWh | 
 | 2024 | Competitive suppliers Verification | Green-e |  |