Performance Path
22 January, 2026
Northwest Modeling Requirements V26.0 (REM/Rate™ v16.3.4)
This guide provides raters with technical guidance on modeling homes in REM/RateTM v16.3.4 to generate northwest utility approved savings estimates. Utilities can then use these savings estimates to meet conservation goals and issue incentives for qualified projects. These requirements also provide information on how data is uploaded to the regional new homes database (AXIS), and where supporting files are located.