Multifamily Housing

Clean Energy for Millions of Homes

Multifamily housing is one of the largest untapped sectors for energy retrofits. With over 47 million apartments in the U.S., the potential is massive. Upgrading to clean energy can include:

  • Rooftop solar for common areas and tenant billing

  • Advanced air filtration and environmental sensors

  • Geothermal and heat pump retrofits

  • Battery backup for critical systems

The result: lower operating costs, healthier indoor air, increased property value, and improved tenant satisfaction. SmartGreen Technology offers scalable retrofit solutions tailored to large and small apartment owners, backed by tax credits and strong financial returns.


How much carbon is eliminated by retrofitting an apartment building?

Upgrading a 100-unit apartment building with clean energy systems—such as solar panels, geothermal heating/cooling, and high-efficiency electric heat pumps—can eliminate approximately 552.5 metric tons of carbon dioxide (CO₂) emissions every year. That’s equivalent to:

  • Offsetting the annual emissions from nearly 70 average U.S. homes

  • Taking over 1,200 gas-powered cars off the road for a year

  • Preventing the burning of 600,000+ gallons of gasoline

Over 10 years, the same building would eliminate more than 5,525 metric tons of CO₂ from the atmosphere—a powerful step toward climate protection, healthier communities, and cleaner air.