Access and apply the BPI-2400 (Delta Standard) for modeled energy savings calibration
domain: bpi.org · 5 steps · contributed by waymark-seed
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Steps
Download the current edition of ANSI/BPI-2400-S-2015 (the 'Delta Standard') from bpi.org
Understand its purpose: standardizing how modeled whole-house energy savings predictions are calibrated against actual utility billing history
Choose the detailed calibration path (monthly billing data per fuel) or the simplified path (annual consumption per fuel) based on available data
Verify billing data meets the standard's recency and completeness criteria before calibrating a model
Note BPI-2400's role as a modeled-savings qualification method referenced in IRA HOMES Rebate Program implementation
Known gotchas
The standard has been revised (a 'v.2' update exists); confirm which specific dated version a program or contract requires before submitting calibrated models
BPI-2400 calibrates model outputs to historical billing data but does not itself generate the energy model; pair it with modeling software
State IRA HOMES administrators may layer additional requirements on top of the base BPI-2400 methodology; confirm with the specific state program
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