There are tax credits to the builder to offset some of the increased up front cost, $2000 + $500 for some systems, and 22% on PV systems. It looks like the home

There are tax credits to the builder to offset some of the increased up front cost, $2000 + $500 for some systems, and 22% on PV systems. It looks like the homeowner can get a $5000 tax credit for 10 years. The goal is to transition to housing which can be powered by renewables. To that end there are requirements for the thermal integrity of the envelope and windows, there must be electric run for HVAC heat pumps, hot water heat pumps, and at least one EV parking space. Lighting must be modern high efficiency stuff. Ductwork must be inside the thermal envelope. There are indoor air quality standards to meet.