From the Colonial Power website:
"The Heath Community Choice Power Supply Program is a municipal aggregation program. According to Massachusetts law (M.G.L. c. 164, § 134), municipal aggregation enables local government to combine the purchasing power of its residents and businesses so that it can provide them with an alternative electricity supply. Once in place, the local government can monitor and set its own energy related goals for the program such as savings, stability or green options. Consumers are no longer “stuck” with the cost and fluctuation of the utility’s Basic Service rates because the program offers them another option."