Three Massachusetts utilities are suing Canadian energy giant Hydro-Québec after it failed to deliver promised hydropower for several days during a cold snap this winter. Hydro-Québec, in turn, is suing the utilities for withholding payment for power that was delivered. The dispute is the latest in a string of…

Dig Energy , a startup on a quest to vastly improve geothermal drilling, has completed its first commercial project, digging seven boreholes for a geothermal heating and cooling system at the headquarters of Boston general contracting firm Suffolk Construction. Dig first stepped into the public eye almost exactly a…