Renewable energy

Sharon is committed to supporting the development of local and regional renewable energy. Renewable energy is generated by sources that can be renewed, such as sunlight, wind, and water, as opposed to sources that can be used only once, such as fossil fuels. The supply of sunlight, wind, and flowing water is not diminished when we “mine” energy from them.

Read about Sharon’s evolving renewable energy strategy.

Program renewable energy content detail

Electricity from new renewable sources in the New England region (MA Class I RECs) Sharon Power Choice Standard. Sharon Power Choice Green. Sharon Power Choice Basic. Eversource's Basic Service. National Grid's Basic Service.
Required by state law 30% 30% 30% 30% 30%
Added by Sharon 20% 70% 0% 0% 0%
Total* 50%** 100% 30% 30% 30%

* State law requires all electricity suppliers to purchase Renewable Energy Certificates (RECs) from other sources, including sources that are not new, are renewable but not clean, such as waste to energy, or are clean but not renewable, such as nuclear. This purchase must be made even if the total amount of RECs purchased from either clean or renewable sources exceeds 100% of the electricity used by Sharon Power Choice participants. This purchase must match 39% of participants’ electricity use.

** The Sharon Power Choice Standard option will be retired in January 2027. All participants in that program option will be automatically moved to the Sharon Power Choice Basic option at that time.

A change in the Sharon Power Choice renewable energy strategy

Buying electricity from renewable sources is important. It does not create air pollution or the greenhouse gases that are generated from burning fossil fuels, such as oil, natural gas, coal, or propane. Sharon Power Choice has prioritized buying renewable energy from the New England region as a way to help make our local grid greener and cleaner.

When the program launched, Sharon Power Choice offered three options, with most participants enrolled in the middle option, Sharon Power Choice Standard. Sharon Power Choice Standard included a voluntary purchase of renewable energy from our region over and above the minimum required by state law to match 50% of participants’ electricity use. The cost of that additional renewable energy was embedded in the Sharon Power Choice Standard price. Until recently, the impact of purchasing this extra renewable energy from our region was an increase in demand for more renewable energy on our local grid. Renewable energy developers saw that demand and built new renewable energy projects to meet it.

However, recent shifts in federal policy, including the sunsetting of tax credits and a slowdown in new project permitting, have made it significantly more difficult to build new renewable energy infrastructure. Because of these barriers, the extra cost associated with buying additional electricity from renewable sources is, for now, not having the desired impact. Specifically, it does not drive the development of new regional renewable energy projects.

To prioritize consumer savings during this period, the program has decided to retire the Sharon Power Choice Standard option for the January 2027 – January 2030 contract term. All participants in Sharon Power Choice Standard will be moved to the Sharon Power Choice Basic option, which includes only the minimum from renewable sources required by state law with no additional premium. The Sharon Power Choice Green option remains available for those who wish to opt up and buy electricity that is 100% from renewable sources.

However, the Town of Sharon remains deeply committed to accelerating renewable energy development and will continue to explore new, more effective ways to support a cleaner, greener grid through this program as market conditions evolve.

What does it mean to buy renewable electricity / what are RECs?

Unless you have a renewable energy system, such as solar panels, plugged directly into your home or office, you cannot purchase the specific electricity that is generated by a renewable energy project. The electricity flowing through the grid is a comingled mix of electricity generated by renewable energy projects as well as electricity generated by burning fossil fuels.

As a result, a separate accounting system has been created to keep track of renewable energy and allow it to be bought and sold. That system uses renewable energy certificates, or RECs. Every time a renewable energy project generates 1 megawatt-hour of electricity, 1 REC is minted. That REC can then be sold. Purchasing a REC gives you, and no one else, the right to say you used the electricity from that renewable energy project.

Anyone who wishes to purchase renewable electricity must then purchase 2 things:

  • the electricity itself from the grid
  • RECs that equal the amount of electricity they wish to claim as renewable

(These two costs are often bundled together, which is why renewable energy costs a bit more.) Whoever buys RECs has the right to say they used the electricity generated by the associated renewable energy projects. Those RECs are then retired so that they cannot be purchased by anyone else, and no one else can claim to have used that electricity.

Anyone buying RECs has the option to buy as many as they wish, including buying RECs that equal more than the electricity used. Because buying RECs provides an important source of revenue for renewable energy developers, voluntarily buying additional RECs can be a strategy for supporting renewable energy.

What are MA Class I RECs?

MA Class I renewable energy certificates (RECs) are 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 new renewable energy projects 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.

* Sharon’s supply contract excludes biomass from the voluntary renewable energy purchased through the program.