Air source heat pumps for space conditioning and water heating are keystone technologies in efforts to decarbonize buildings.[1] Heat pumps have the potential to save approximately 60% of total residential heating energy consumption and reduce GHG emissions by 13.1 MMTCO2e if installed in homes...

This project assesses the application, market opportunity, and performance of phase change material (PCM) thermal energy storage systems (TESS) to replace inefficient gas and electric water heaters located in space-constrained California multifamily buildings, or as a technology solution to reduce...

This is the final project report for a study on steam trap fault detection and diagnostics (FDD) conducted from 2023 to 2025 for the Pacific Gas & Electric Company (PG&E) Code Readiness Program. The purpose of the study was to investigate the impact and feasibility of extending the 2022...

This memo summarizes the endangered savings analyses conducted by the Pacific Gas and Electric Company (PG&E), San Diego Gas and Electric (SDG&E), and Southern California Edison (SCE), collectively referred to herein as the California Investor-Owned Utilities (CA IOUs), in response to the...

This research project supports the development and implementation of California’s Building Energy Efficiency Standards Title 24, Part 6 (Title 24) by providing insights into envelope and thermal energy storage (TES) design strategies along with their potential energy savings. A significant...

This research project was designed to introduce strategies that reduce and manage building peak electric demand to those involved with the development and implementation of California’s Title 24, Part 6, Building Energy Efficiency Standards. A key challenge and barrier in the transition to a fully...

The Zero Flame Spread Project, led by Southern California Edison, tackles the rising wildfire threat in the Wildland-Urban Interface (WUI) by advancing fire-resilient building practices. The Project Team identified effective fire-resistant materials—like fire resistant stucco, mineral wool...

In 2022, greenhouse gas (“GHG”) emissions in California were approximately three hundred seventy (370) million metric tons of CO2 equivalent (“MMTCO2e”) (California Air Resources Board, 2024). Second only to the transportation sector, California buildings account for twenty-five percent (25%) of...

In 2022, greenhouse gas (“GHG”) emissions in California were approximately three hundred seventy (370) million metric tons of CO2 equivalent (“MMTCO2e”)(California Air Resources Board, 2024). Second only to the transportation sector, California buildings account for twenty-five percent (25%) of the...

This project will assess the market opportunity and technology performance of new split heat pump water heater (HPWH) designs for direct replacement of inefficient gas (including natural gas and propane) and electric water heaters located in constrained spaces in California multifamily buildings....