The 56 State and Territory Energy Offices’ investments in energy efficiency and renewable energy projects have grown over three decades, not only through cost-shared support for technology demonstrations and commercialization, but also through a variety of financing programs and mechanisms. Over the past several years, the number and scale of these public-private financing programs have grown; the total estimated investment stands at $3 billion in 2013, with significant additions expected in the coming year. The types of financing tools used by State Energy Offices have evolved from revolving loan funds to sophisticated credit enhancement mechanisms and new approaches to bond financing. With successful models expanding across the United States, the National Association of State Energy Officials (NASEO) has completed an analysis of state energy financing programs focused on the buildings and industrial sectors to identify and evaluate approaches that have been implemented by State Energy Offices and their public and private partners.