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On April 13, 2026,  Maine Gov. Mills signed into law House Bill LD2112 that authorizes municipalities and tribal communities to establish community choice aggregation (CCA) programs.

CCA implementation would include that such programs must be opt-out for default service customers but would require affirmative consent for retail supplier, low-income, and net metering customers.

The Maine PUC must initiate a rulemaking by January 1, 2027 to establish rules including: (1) CCA establishment and approval processes and standards;(2) timing and notice requirements and opt-in and opt-out procedures; (3) requirements for consumer protection and transparency and data sharing, including a standard competitive electricity provider service agreement to provide for ongoing data sharing; and (4) provisions to minimize impacts to default service, “to the greatest extent practicable.”