Residential Hot Water Heaters

At a Glance

Status

active

Sector

residential

Applications

water heating

Sunset date

Dec 31, 2027

The RTF approved updates to the workbook in September 2026. This workbook addresses load shifting from morning and/or evening peak periods to the hours that follow. It covers unitary tank water heaters (WH) in residential locations, including both electric resistance WH and heat pump WH. The workbook is intended to help resource planners understand basic characteristics of this DR product. This includes: common obstacles to program participation and event participation, typically attainable kW impacts per participant, and typical program costs.

Workbook

Latest Version

Residential Water Heaters Demand Response Workbook v2.0

Residential Water Heaters Demand Response Workbook v2.0

Approved at the Sept 2026 RTF meeting. Undergoing QAQC.

Date

Sep 22, 2026

Version number

2.0

Past Versions

version	date	document
1.0	Jun 18, 2019	Residential Water Heaters Demand Response Workbook v1.0 This workbook was approved at the June 2019 RTF meeting.

Decisions

Expand All Decisions

Latest decision

Decision details

Decided

September 15, 2026

Approve Demand Response Product Updates

Decision Details

Approve the Residential Water Heating Demand Response Product workbook, as presented, set a review date of December 31, 2027, and:
- Add text to summary tab that impact rates are based on telemetry data and may over-estimate impacts

Decided

June 18, 2019

Approve Demand Response Impact Estimate

Decision Details

Approve the recommended methodology for estimating maximum per unit potential of Residential Water Heaters as presented.

The RTF recognized the additional factors will need to be considered to estimate achievable potential, which will be dependent on the DR product.
The RTF recommends that staff incorporate any relevant findings from the PNNL analysis into its material and update the RTF on notable findings.

Demand Response Technology