Spray foam is used enthusiastically by many builders hoping to improve energy performance of their projects. But the hidden climate impact of conventional 2-pound, closed- cell foam is actually a huge step backward. A new generation of low global warming potential spray foam corrects this fatal flaw.

Two trends are now converging that will promote a zero energy lifestyle. First, electric vehicle sales are poised to grow dramatically. Second, positive energy homes are growing in popularity. These homes create enough energy to supply all at-home energy use and much of the transportation energy for households. It's time for building professionals to build positive energy homes for homebuyers who will soon be driving and charging electric vehicles.

The sixth annual inventory of zero energy homes has just been released. It shows considerable growth to almost 28,000 units. Projections indicate the number could double in 2021.

There is an elephant in the utility room. Clothes dryers have big energy appetites. As homes go all-electric, switching to heat pump technology for clothes drying will save energy and reduce carbon emissions, while reducing the wear and tear on your clothes.

Since before the dawn of civilization, humans have stayed comfortable by harnessing the forces of nature. These principles can also be applied in today’s homes and buildings to reduce or eliminate energy used for conventional air conditioning.

Concrete is the largest source of embodied carbon in buildings, but we can change that. “Green” concrete products are now available that range from somewhat lower carbon, to zero carbon, and carbon negative. Concrete may just flip from villain to hero when builders, designers, and homebuyers demand it.

While health is always on the list of zero energy home benefits, it was the motivating force that prompted Steve Weise and Brenda Nunes to develop this 60-unit neighborhood in Central Washington. All homes in the development include a comprehensive package of proven features that protect health, maintain durability, and guarantee zero energy ready performance. But Steve and Brenda are taking the health of their homes to a higher level.

A good product meets real human needs. Abraham Maslow’s hierarchy of needs provides a powerful framework for converting those needs into effective messaging to homebuyers. To sell more zero energy homes, sellers need to link the needs of home buyers with the many tangible benefits of zero energy homes.

At current rates, most offices and homes will not be retrofitted for decades or even centuries to acceptable levels of energy efficiency. One approach is mandatory building performance standards—requiring existing buildings to meet a performance benchmark (energy or carbon intensity, performance rating, etc.), with owners having multiple years to bring buildings into compliance.

There is a special connection between homes and homebuyers. Yet many new homes are marketed like commodities. To effectively sell zero energy homes, it’s necessary to create a direct link between buyer needs and these homes’ intrinsic values.

Baby boomers have enjoyed unprecedented financial opportunity, convenience, and economic security— benefits built largely from extraction and burning of fossil fuels. The resulting impact on Earth’s climate has created the Baby Boomer carbon debt. It’s time for them to take action to preserve the climate for future generations, but there’s not much time.

Leading U.S. cities are filling a crucial information gap in the residential real estate market by requiring home energy disclosures for potential homebuyers: a much needed transparency measure and consumer protection practice. This process provides buyers with an energy efficiency rating on every property listed for sale. An online resource and a support network are available for local governments that want to adopt similar energy disclosure measures.