This four-story apartment project in Portland's Munjoy Hill neighborhood is one of the most high-tech buildings in Maine.

What You Need to Know

Efficiency or Sustainability Improvements:

Produces 9,600 kilowatt hours of solar electricity annually Uses air source heat pumps, a heat recovery ventilation system, and solar thermal hot water Three units and over 4,500 square feet with no furnace required

Open House Info:

62 Cumberland Ave. in Portland, ME. The house is open from 10am to 4pm.

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