Renewable Energy Content Detail

(automatic enrollment) (100% renewable energy option)  

Basic Service
(if you opt out)

Electricity from renewable sources* 2023 2024 2025 2026 2023 2024 2025 2026 2023 2024 2025 2026
From renewable or clean sources required by state law 59% 62% 63% 69% 59% 62% 63% 69% 59% 62% 63% 69%
From new renewable resources (MA Class I RECs) in the New England region, added by Walpole 20% 20% 20% 20%
From wind projects outside of the New England region (National Wind RECs), added by Walpole 21% 18% 17% 11%
Total from renewable sources 59% 62% 63% 69% 100% 100% 100% 100% 59% 62% 63% 69%
Exit terms Leave any time.
No exit charge.
Leave any time.
No exit charge.
Leave any time. No exit charge. However, large business customers may receive a billing adjustment charge or credit.

* The Commonwealth of Massachusetts requires that all electricity supply products include a minimum of 59% from renewable energy resources in 2023, 62% in 2024, 63% in 2025, and 69% in 2026. Power Choice Standard meets the minimum requirement, and Power Choice Green exceeds it.


What are MA Class I RECs?

MA Class I RECs are renewable energy certificates (RECs) from renewable energy projects that began commercial operation after 1997, generate electricity using any of the following technologies, and meet all other program eligibility criteria:

  • Solar photovoltaic
  • Solar thermal electric
  • Wind energy
  • Small hydropower
  • Landfill methane and anaerobic digester gas
  • Marine or hydrokinetic energy
  • Geothermal energy
  • Eligible biomass fuel

Purchasing MA Class I RECs helps to create demand for more renewable energy on the New England grid. By purchasing more MA Class I RECs than is required by state law, you can help to drive the development of new renewable energy projects in our region.

What is required by Massachusetts state law?

Massachusetts state law requires all electricity suppliers include a minimum amount of electricity from renewable and clean sources, and that minimum amount increases every year. The law includes a requirement to purchase electricity from both MA Class I-eligible sources and also additional renewable / clean sources.

What are the additional renewable / clean sources referred to in the table?

The phrase “additional renewable / clean sources” refers to the renewable energy required by state law other than MA Class I RECs. Some of these sources are renewable, but not emission free, such as waste-to-energy, which is electricity generated from burning solid waste, and some of those sources are clean but not classed as renewable, such as nuclear.