California this month became the first U.S. state to require solar panels on almost all new homes.
Most new units built after Jan. 1, 2020, will be required to include solar systems as part of the standards adopted by the California Energy Commission. Estimates are that the mandate will drive up the cost of buying a house by almost $10,000.
The PV-on-house law is a new component of Governor Jerry Brown’s effort to slash carbon emissions by 40% by 2030, and provides a potential roadmap for other states to follow. The U.S. had 10.4 gigawatts of residential solar power at the end of last year, up more than 600% from five years earlier. California’s move will boost the residential solar industry, which started slowing in 2017 after government policy changes and efforts by some companies to shift their strategies.
Installation of a solar system and other energy-efficiency requirements will add about $9,500 to the cost of a new home, according to the California Energy Commission. The cost would be offset by about $19,000 in expected energy and maintenance savings over 30 years, according to the commission.
Related Stories
Codes and Standards | Mar 11, 2021
Los Angeles commits to carbon-free city buildings
City will take into account embedded carbon when contracting to buy construction products.
Codes and Standards | Mar 10, 2021
‘Smart retrofitting’ will be crucial to net zero aspirations
AI, analytical software, Internet of Things are keys to decarbonization of built environment.
Codes and Standards | Mar 9, 2021
Salt Lake City is first jurisdiction to adopt new standards for off-site construction
Code Council and Modular Building Institute developing standards and compliance protocols.
Codes and Standards | Mar 8, 2021
Hyperlocal zoning could spur more affordable housing construction
Letting blocks and streets pass their own rules could have impact.
Codes and Standards | Mar 5, 2021
Biden builds on Trump’s “Buy American” order
New administration extends preferences for domestic construction materials.
Codes and Standards | Mar 4, 2021
Biden administration overturns Trump’s federal building design mandate
Previous order promoted classical and “traditional” architecture above others.
Codes and Standards | Mar 3, 2021
Texas freeze raises questions about risks of electrifying buildings
Gas stoves helped residents cook, boil water when power went out.
Codes and Standards | Mar 2, 2021
New Seattle building code eliminates fossil fuels for most space and water heating
Also increases on-site solar photovoltaics, reduces envelope heat loss, air leakage, and interior lighting power allowances.
Codes and Standards | Feb 25, 2021
It’s not just lumber—roofing material prices are also on the rise
Lower demand for petroleum products means less asphalt production.
Codes and Standards | Feb 23, 2021
USGBC offers education on LEED Safety First pilot credits
Four courses address COVID-19.