The developer of the Northern Pass transmission line that would bring Canadian hydropower to New England has proposed burying 60 miles of the line through scenic areas of New Hampshire, a change that will force a reduction in its capacity.

A New Hampshire energy broker wants to dust off a so-far unused 1978 state law that allows small hydro producers to sell electricity directly to customers.

Eversource will sell its New Hampshire plants to satisfy regulators’ divestiture demands and resolve a long-standing dispute over the cost of pollution controls.