From the Boston Globe

Retail giant Walmart said it plans to install solar panels on top of about half of its roughly 50 Massachusetts stores as early as August as part of an expansion of solar power in the state.

The installations for the 27 stores are still in the engineering phase, and local permits must be obtained, Walmart officials said. But once the projects are done, they will be capable of generating a total of about 10.5 megawatts worth of energy, enough to power up to 2,600 homes.

“On average, the systems we’ll be using in Massachusetts will provide from 10 to 15 percent of each store’s power requirements,’’ said David Ozment, Walmart’s director of energy programs. “We’re very optimistic that we’re going to save some dollars over time.’’

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