Ciminelli Real Estate Corp.’s new Bethune Lofts apartment conversion has won “silver” LEED certification from the U.S. Green Building Council for its “green” characteristics, the developer said Tuesday.

The 100,000-square-foot project that converted a former factory into 87 upscale loft-style apartments at 2917 Main St. received the Leadership in Energy and Environmental Design certification for new construction because it “achieved an exceptionally high standard of energy efficiency, while decreasing its overall impact on the environment,” according to a Ciminelli press release.

Specifically, the project used recycled and “regionally sourced” building materials, with 296 tons of construction debris diverted from landfills during construction. And the complex’s operating and mechanical systems conserve water and energy, with lighting, heating and cooling systems that are 39 percent more efficient than in conventional buildings, the developer said.

Also, the use of water-efficient landscaping throughout the site avoided the need for an irrigation system, a white-membrane roof reduced the “heat-island” effect, Energy-Star-rated appliances are in all units, and low-flow faucets, shower heads and toilets cut the amount of water used by 33 percent. Additionally, the building’s proximity to public transportation cuts down on the use of cars by residents.