New Hampshire’s energy-infrastructure siting board on Feb. 1 unanimously rejected the Northern Pass power-line project. The move could undermine a recent clean-energy solicitation by a group of Massachusetts utilities. The group tentatively selected Hydro Quebec and Eversource Energy’s hydropower proposal to transmit power via Eversource’s 1,080-MW Northern Pass project. Eversource planned to start building the $1.6-billion power line this summer, with operations slated to start in 2020. The line was set to run about 192 miles, from the Canadian border to Deerfield, N.H. Eversource plans to appeal the New Hampshire Site Evaluation Committee’s decision. Groups such as the Sierra Club want the utilities to reexamine the 46 other offers they received.