This tool from Pacific Gas & Electric Company (PG&E) provides homeowners with a list of contractors, based on their location, to schedule an energy assessment or in-home consultation.  It also provides a direct link to state license information.

This tool provides Southern California Edison (SCE) and Southern California Gas (SoCalGas) customers with a list of Energy Upgrade California participating contractors, home performance skills, license information, and the languages spoken by the contractors.

This tool from Focus on Energy connects Wisconsin residents and businesses with local home performance contractors that provide various energy efficiency services and offers a list of each contractor's skills.

This tool helps customers in New York State find Home Performance with ENERGY STAR participating contractors based on their location.

Home performance extensible markup language (HPXML) is a national Building Performance Institute Data Dictionary and Standard Transfer Protocol created to reduce transactional costs associated with exchanging information between market actors. This website provides resources to help stakeholders implement HPXML and stay updated on its development.

The ResStock analysis tool is designed to help states, municipalities, utilities, and manufacturers identify which home improvements save the most energy and money.

This online tool was designed to help Americans save money and energy by improving the energy efficiency of their homes through recommended, customized, and prioritized home improvement projects. The tool guides homeowners through a do-it-yourself energy assessment to create an ENERGY STAR home profile. Based on the newly created profile, the tool provides customized, prioritized recommendations for improvements. From these recommendations, users can create their own to-do lists of projects and update their home profiles over time as they make improvements. The home profiles can also be printed and used as a marketing advantage when homeowners sell their homes.

National Housing & Rehabilitation Association has collected a number of energy efficiency factsheets and resources on their Preservation Through Energy Efficiency Initiative Library.

State and Utility Pollution Reduction Calculator Version 2 (SUPR 2) helps policymakers, state governments, utility owners, and other stakeholders understand the costs and benefits of various residential and commercial energy efficiency technologies and policies that will reduce carbon emissions from the power sector.

This advisory addresses the most prominent appraisal issues associated with residential properties exhibiting green features and uses the terms "green" and "high performance" loosely. The structure of this document generally follows the real estate appraisal process and workflow.