Nationwide analysis gives policymakers and business owners insight to target specific regions, housing segments, and technologies for efficiency and electrification upgrades.

Upgrading the energy performance of walls in an existing home is the most challenging aspect of a deep energy retrofit. One of these eight options will work for just about any zero energy renovation.

This analysis, using standard business investment metrics, shows that a complete zero energy home retrofit can return 15% a year with zero risk. Beat that Wall Street!