This toolkit is for homeowners, homebuyers, builders, designers, appraisers, and anyone else interested in zero energy (ZE) homes. A ZE home is an energy efficient house that consumes only as much energy as is generated through clean, renewable resources such as solar power. This collection of research studies, tools, and guides shows the technical and financial feasibility of zero energy and offers guidance for implementation. Click on anyone of the categories to see what resources are available. You can further filter on topics by clicking the filtering options on the left hand side of the page.