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.

A list of tips from Connecticut's Neighbor to Neighbor Energy Challenge for working with utilities to access energy usage data.

This presentation shares how the Neighbor to Neighbor Energy Challenge collected and evaluated data and used the results to improve its program.

This presentation outlines the steps Connecticut's Neighbor to Neighbor Energy Challenge program took to obtain and sort useful feedback from surveys and volunteer observations.