An Act to Include Nuclear Power in the State's Renewable Portfolio Standard
Summary
LD 342 would amend Maine’s renewable energy and renewable capacity resource definitions to add electricity generated by a nuclear power plant constructed after January 1, 2025. In practical terms, the bill would treat qualifying new nuclear generation as a renewable resource for purposes of the state’s portfolio requirements, alongside existing resources such as wind, solar, anaerobic digestion, and certain waste-to-energy facilities.
The bill specifically inserts nuclear power into the statutory categories used to define Class I renewable resources and renewable capacity resources. Because those classifications are tied to the portfolio supply source requirements for competitive electricity providers, the measure would affect how utilities and competitive suppliers can satisfy Maine’s renewable portfolio standard and what generation sources may count toward compliance.
Impact
If enacted, LD 342 would change Maine law by expanding the list of eligible resources under the state’s renewable portfolio standard to include certain new nuclear facilities. That would affect the statutes governing renewable capacity resources and renewable resources, and could allow electricity from post-2025 nuclear plants to count toward compliance obligations for competitive electricity providers. The bill would not broadly redefine all nuclear power as renewable; it is limited to nuclear plants constructed after January 1, 2025.
Sentiment
The available voting history indicates the bill faced significant opposition. On May 28, 2025, the House voted 75-70 to accept the majority ought not to pass report, and on May 29, 2025, the Senate voted 21-14 to accept the same report. That pattern suggests the Legislature was generally unfavorable to the proposal, though the close margins show it drew meaningful support as well.
Contention
The main point of contention is whether nuclear power should be classified as renewable for purposes of Maine’s portfolio standard. Supporters appear to have viewed nuclear as a low-carbon source that could help meet clean energy goals and diversify the state’s supply mix, while opponents likely objected to labeling nuclear as renewable and to changing the policy framework that currently emphasizes wind, solar, and other non-nuclear resources. The narrow votes suggest disagreement over both the environmental definition and the policy implications for utility compliance and future energy development.