This document provides an overview of performance contracting through energy service companies (ESCOs) for energy efficiency projects. It defines key terms and outlines the typical steps in a performance contracting project. These include identifying an appropriate project, issuing a request for proposals, conducting an investment grade audit, negotiating and approving contracts, and long-term measurement and verification of energy savings. The document explains how performance contracting can provide capital improvements with guaranteed energy savings and notes important considerations like utilizing state resources and following statutory requirements.