Retro-Commissioning Savings Estimator

Estimate energy savings from retro-commissioning (RCx) using a two-layer methodology. Layer 1 benchmarks building energy use intensity (EUI) against ENERGY STAR national medians. Layer 2 applies issue-based savings percentages from the Mills 2011 meta-analysis of 643 commissioning projects.

Enter building type, square footage, annual energy costs, and select from an 18-item deficiency checklist — scheduling issues, simultaneous heating and cooling, economizer faults, static pressure resets, and more. The tool calculates savings as a percentage of annual energy cost with estimated RCx cost and payback.

Useful for scoping RCx projects, building ESCO proposals, and estimating savings potential before a detailed investigation.