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

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.

The toolkit distills Enterprise's experience retrofitting multifamily affordable housing into the critical steps necessary for success. It is a roadmap for multifamily housing owners, investors, and developers which outlines a comprehensive, cost-effective approach to retrofit.

The Small Town Energy Program (STEP) toolkit gives a complete overview of STEP from planning to implementation. It also includes access to a wide variety of materials developed by the program, including: local asset materials, partner materials, personnel materials, program administrative materials, outreach materials, and surveys. STEP has posted these toolkit documents with the hope that it will assist other small towns and communities in building and running more energy efficiency programs.

This calculator provides a simplified tool to demonstrate the business case for energy efficiency from the perspective of the consumer, the utility, and society.