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| 2012–2023 | 2021-2023 | 2023-present |
Elektro[]
2012-2021[]
Neoenergia Elektro[]
2021-2023[]
2023-present[]
| Avangrid (United States): Berkshire Gas | Central Maine Power | Connecticut Natural Gas | Maine Natural Gas | NYSEG | Rochester Gas & Electric | Southern Connecticut Gas | United Illuminating Scottish Power (United Kingdom) Neoenergia (Brazil):  |