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End-Use Load Flexibility: Connected Water Heater Study
Since 2023 in Washington and 2025 in Oregon, state regulations have required electric storage water heaters with capacities of 40–120 gallons to include an EcoPort®, enabling direct communication with the water heater through the ANSI/CTA-2045 standard. As adoption of EcoPort-enabled water heaters increases, utilities have a growing opportunity to leverage these devices as flexible grid…
Residential -
2025 Heat Pump Water Heater Baseline and Key Assumption Review
The Northwest Energy Efficiency Alliance (NEEA) contracted with Larson Energy Research to review key baseline assumptions and energy savings inputs for its Heat Pump Water Heater (HPWH) program. In 2025, NEEA updated key assumptions to better account for HPWH adoption in residential new construction, introducing new approaches to more accurately track savings across the region.…
Residential -
Residential Heat Pump Water Heater Qualified Products List
The Residential Heat Pump Water Heater (HPWH) Qualified Products List (QPL) contains information on Residential HPWH products that meet the Advanced Water Heating Specification requirements. These products are found in Single Family or low rise multifamily (in residential dwelling units). Please contact us with any questions. Updated as of 2026
Residential -
Home Energy Metering Study Data Standardization and Peak Load Analysis
The Home Energy Metering Study (HEMS) collected one-minute, circuit-level energy use data from more than 400 homes across the Northwest between 2018 and 2026, resulting in a dataset of more than 14 billion data points. The HEMS Data Standardization and Peak Load Analysis, prepared by Resilient Edge and Linden Clean Energy, draws on data from…
Residential -
End-Use Load Research Commercial Energy Metering Study – Final Report
NEEA and its partners launched the End‑Use Load Research (EULR) project, which collected high‑frequency energy use data from residential and commercial buildings, including the Commercial Energy Metering Study (CEMS) focused on key HVAC end uses in office and retail buildings. This report summarizes the breadth of data collected through the CEMS and was prepared by…
Commercial + Industrial -
End-Use Load Research Home Energy Metering Study – Final Report
This is the final report for the residential End-Use Load Research (EULR) project Home Energy Metering Study (HEMS), conducted by Evergreen Economics. HEMS collected one-minute, circuit-level energy use data from more than 400 homes across the Northwest between 2018 and 2026, resulting in a dataset of more than 14 billion data points. This report examined…
Residential -
Heat Pump Water Heater Market Progress Evaluation Report #8
The Northwest Energy Efficiency Alliance (NEEA) contracted with NMR Group, Inc. to conduct the eighth Market Progress Report (MPER) for its Heat Pump Water Heater (HPWH) program. The report finds that the program has contributed greatly to setting the groundwork for ongoing and widespread HPWH adoption. Between 2021 and 2024, HPWH market share in the…
Residential -
Commercial HPWH Qualified Products List
The Commercial/Multifamily HPWH Systems QPL contains information on Commercial and Multifamily products that meet the Advanced Water Heating Specification requirements. These products generally serve more than four dwelling units or a commercial load (as defined in the specification). Products can be integrated or split systems. Please contact us with any questions. Updated as of 2025 – Version…
Commercial + Industrial -
AWHS Residential Chapter Revision
NEEA welcomes additional feedback on this draft revision of the residential AWHS through August 31, 2026.
Residential -
Commercial HPWH Product Assessment Datasheet (PADS)
For commercial heat pump water heaters (HPWH) to be considered for inclusion on the Qualified Products List, HPWH product vendors must complete and submit a Product Assessment Datasheet (PADS). The PADS outlines compliance with the requirements within NEEA’s “Advanced Water Heating Specification.”
Commercial + Industrial