Performance Path Version 4 Updates and User Defined Reference Homes

Performance Path Version 4 (V4) program updates for Oregon and Washington will go into effect on Thursday, October 1, 2026. The updated name in AXIS is, “Utility Incentive V4 – Single Family Performance Path."

V4 User Defined Reference Homes (UDRH) compatible with NWMR V26.0

• This ZIP file includes updated V4 2026 UDRH for Oregon and Washington, and also take effect October 1, 2026
• These UDRH align with the Northwest Modeling Requirements V26.0 and are compatible with REM/RateT™ v16.3.4

AXIS Calculator Updates for non-heating/cooling savings

The AXIS calculator will be updated to align with the New Homes Standard Protocol v3.1 prescribed by the Regional Technical Forum. Updates include:

• Removal of savings for smart thermostats and dishwashers
  
• Savings changes for refrigerators, clothes washers, and clothes dryers
  
• Savings updates for heat pump water heaters: Tier 4 and split system models now eligible and some changes to Tier 3 savings
  

Above-code threshold requirement

Bonneville Power Administration has approved reducing the above-code threshold requirement from the previous minimum of 10% to 5%. Utility programs can implement this lowered threshold, effective October 1, 2026.

V4 Estimator Tool

A V4 program savings and incentive estimator tool is now available for download as an Excel document within AXIS and can be found under the Resources menu.

Contact your local Performance Path utility, the BetterBuiltNW team at info@betterbuiltnw.com, or submit an AXIS help ticket with any questions.