RMLD serves more than 25,000 customers in four communities, and has more than 80 employees. The department's peak demand for electricity is more than 172 megawatts, and it buys electricity from many different sources. One of its offerings is Green Choice, a program that offers customers an active choice to benefit the environment by supporting electricity production from renewable energy sources such as wind, solar, hydro, geothermal, biogas and biomass. Those who make the Green Choice voluntarily pay as little as $3 a month to support the production of 100 kilowatt-hours from renewable energy sources in New England.  Each block of 100-kilowatt-hours costs $3 and a customer can buy an unlimited number of blocks.

Customers who make the Green Choice will guarantee that renewable energy is added to the New England power grid.  However, it is physically impossible to distinguish and deliver energy to specific homes or businesses. For more information, please call Customer Service at 781-944-1340.