How much of the net zero is based on an efficient (tight and highly insulated) building envelope, as opposed to having a large supply of renewable energy?

Advanced engineering and proprietary technologies are implemented from the ground up and designed from the inside out to run completely on a home energy storage system instead of using natural gas and energy from the power grid which is used in most traditional homes. We also have up to 50% less waste in our process [compared to stick built] due to modular plant efficiencies.