Is there a database or registry for net zero energy homes in US? I tried to ask the question of our HERS rating provider, Resnet, but so far have not heard anything back. HERS index for our home is 35 before PV, and -8 after PV. While we did not live in the house for the whole year yet, it looks like we will likely meet 12 month zero energy balance. I would be glad to call our house net-zero, and be registered/recorded somewhere as such.
On the web, I find the following:
Several organizations offer formal net zero energy certification programs:
Earth Advantage provides Zero Energy and Zero Ready Home Certifications in locations where Earth Advantage green certification is offered.
The Living Building Challenge offers nationwide Net Zero Energy Building Certification.
Passive House Institute offers nationwide Passive House Certification.
The Department of Energy has a Zero Energy Ready Certification.
The Canadian Home Builders Association launched a Net Zero Energy Home Labeling Program that recognizes homes that reach zero energy ready status, too.

Living Building Challenge asks for substantial $$ to be certified, and we already “Zero Energy Ready” and Passive House certified. Does not look like anything else applies in our region…

Thanks,
Lucy