Maine Commits to 100% Clean Electricity by 2040
Union of Concerned Scientists
JUNE 26, 2025
The remaining 10% by 2040 could come from a wide range of low- and zero-carbon technologies, including nuclear power, large existing hydropower projects, and using so-called “clean” fuels like biomethane or hydrogen in thermal plants. The current bill would further increase the RPS targets to 90% by 2040.
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