I have expressed dismay in the past that builders of new homes in our area are not getting “with it” when it comes to incorporating the latest thinking and technology regarding energy efficiency.
Builders boast their Energy Star appliances and lower HERS scores, but they are still, for example, installing gas forced-air furnaces instead of heat pumps, gas water heaters instead of heat pump water heaters, and gas cooktops or ranges instead of induction cooktops.
The Geos Community in Arvada provided proof of concept for the all-electric solar-powered, net zero energy home, and homes in that small, privately developed neighborhood have been featured for several years on the annual tour of “green homes.” But no production builder here has picked up on that concept, and when another builder acquired the undeveloped parcels at Geos last year, the first thing they did was bring a natural gas pipeline into the community to serve their new homes, greatly upsetting the happy homeowners of the original net zero energy Geos homes, which purposely have no natural gas lines.
Above is one of KB Home’s all-electric homes in Menifee CA, a smaller city south of Riverside. Not only is every home in that subdivision “net zero energy ready,” but they are tied together in an electric “microgrid,” designed to power itself cooperatively should there be an outage in the larger electric grid.
In the garage you can see both an EV charger and a wall-mounted battery backup system. The small print on the sign reads: “This all-electric, solar-powered home is equipped with smart technologies and a backup battery, plus community microgrid connectivity designed to help maximize home energy efficiency and comfort.”
Meanwhile, here in Colorado, neither KB nor any other builder, to my knowledge, is even offering heat pump HVAC units or heat pump water heaters as upgrades.