This report builds and expands off of previous research by collecting and evaluating data from 800 Illinois Home Performance (IHP) retrofits. This study investigates homeowner measure package choices in the Illinois Home Performance with ENERGY STAR® (IHP) program compared to cost-optimal choices determined through Building Energy Optimization (BEopt™) modeling software.

Presentation describing AFC First's (a lender's) aggressive underwriting and smart product delivery as part of the Keystone HELP program.

This presentation describes the Illinois Home Performance program and marketing strategy lessons learned.

Descriptions of eight county-level and city-level energy efficiency programs in the Southwest.

This brief focuses on loan programs in 30 states that are currently providing low- to no-interest loans to finance energy efficiency improvements--from energy-efficient windows to replacement HVAC systems--in the residential, business, and public sectors.