Combined with a fourth, already completed installation, the projects will generate a total of 3.4 megawatts (MWs) of solar power annually.
The ribbon-cutting ceremony was held at the companys Revere solar site, which is comprised of 2,640 solar panels and has an output of 0.75 MWs. Construction on the project began this spring and cost around USD$5.4 million.
Massachusetts Secretary of Energy and Environmental Affairs Ian Bowles commented: "On behalf of the Administration, I applaud National Grid for taking a leadership role in developing five sites, including four former brownfield sites, for the generation of carbon-free solar energy. In making this investment, Grid is an important partner with the Commonwealth in our pursuit of a clean energy future.
Last October, National Grid received approval from the Massachusetts Department of Public Utilities to design, build, own and operate five solar generation facilities that would yield approximately five MWs of power.
The companys Whitinsville solar site, completed this June, was reportedly the first utility-owned solar generation facility in service under the Commonwealths 2008 Green Communities Act, which allows utilities to own up to 50 megawatts of solar generation. The fifth solar site planned and approved for Dorchester near National Grids Liquefied Natural Gas rainbow tank is expected to come on line in early next summer.