Peter Shattuck, Massachusetts director at the Acadia Center, an energy advocacy group, said the utility fee seems high considering National Grid and Eversource might play a role in building the transmission lines that will deliver the power. Eversource, for example, is partnering with Hydro-Quebec on the Northern Pass transmission line down from Canada. National Grid is involved with the Green Line in Vermont.

“The bonus incentives seem excessive given that utilities can get a return of 10 percent or more on the transmission to bring hydro and wind online,” Shattuck said.