M&V Weather Normalization Tool

Build weather-normalized energy baseline models for IPMVP Option C whole-building measurement and verification. Enter monthly utility consumption and select a TMY3 weather station to generate a change-point regression model with R-squared, CV(RMSE), and savings uncertainty per ASHRAE Guideline 14.

Supports four model types — 3-parameter heating, 3-parameter cooling, 4-parameter, and 5-parameter — with automatic model selection based on adjusted R-squared. Results include regression coefficients, residual plots, weather-normalized savings, and confidence intervals.

Built for M&V practitioners documenting guaranteed savings in energy performance contracts.