Energy

Following approval from the Massachusetts Energy Facilities Sitting Board this month, National Grid announced Thursday that it would begin construction on a 15.4-mile electric transmission line in Millbury, Sutton, Northbridge, Uxbridge and Millville.

First-quarter revenue plunged for Worcester-based ThermoEnergy Corp. (TMEN), which makes wastewater-treatment and power-generation systems, the company announced Thursday.

World Energy Solutions Inc. of Worcester reported revenue growth and narrowed losses in the first quarter, which CEO Phil Adams said points to continued recovery for the energy management services firm.

First-quarter revenue fell 9 percent at Framingham-based Ameresco, the company said Thursday.

Northeast Utilities, which owns several utility companies, including NStar, reported first-quarter 2014 earnings of $236 million, or...

Oxford’s proposed acquisition of the town’s privately owned water system could save local businesses money. But it...

When it comes to the environment, the railroad industry's bona fides are clear — trains use far less fuel than trucks to move goods from one place to another and produce much less pollution. But Providence & Worcester Railroad is taking things one step further.

Worcester-based ThermoEnergy Corp., which makes wastewater-treatment and power-generation systems, saw its revenue plummet in 2013.

Worcester-based energy management services firm, World Energy Solutions reported lower revenue for the fourth quarter of last year, although full-year revenue increased, the company said today.

NEC Corp. has bought the Westborough-based energy solutions business of A123 Systems for about $100 million, the Japan-based technology networking provider announced today.