Project SummaryCompared to all commercial buildings types, food service has the highest energy intensity (energy consumed per square footage), and restaurants consume three times more energy per square foot compared to the average commercial building. Water heating and cooling...

Under the auspices of PG&E’s Zero Net Energy (ZNE) Production Builder Demonstration, CHISPA (Community Housing Improvement Systems and Planning Association, Inc.) built a 1,151 square foot ZNE home with ducts in conditioned space and a mini-split heat pump in Greenfield, CA. The attached...

Under the auspices of PG&E’s Zero Net Energy (ZNE) Production Builder Demonstration, Blu Homes built a 1,877 square foot all electric ZNE home in Loomis, CA. This report describes the results from monitoring the occupied home for a full year.The ZNE definition used for the design was...

Project SummaryA heat pump water heater (HPWH) offers a considerable opportunity for energy and demand savings over a conventional electric water heater. This report examines HPWHs for commercial applications by evaluating the performance of a HPWH installed in a condominium...

HGW Architects is the first commercial ZNE building in San Diego. SDG&E ET collaborated with Savings by Design to make this happen. ET then conducted a comprehensive study to understand modeled vs. actual building performance. The analysis discusses data discrepancies and methods used to...

This project will field test recently developed tools and associated workflows to determine the viability and efficacy of rapid building physics based building energy models for use in energy efficiency measure identification and energy use...

In 2012, the University of California, Davis (UC Davis), Energy Institute initiated a project funded by the Emerging Technologies Program at the Pacific Gas and Electric Company (PG&E) to retrofit existing residential structures through energy efficiency improvements and with ground source...

The goal of this project was to compare the capital costs of a Geothermal Central Utility Plant (CUP) to a Conventional CUP, estimate the energy cost savings, and determine the simple payback at a correctional facility development project in San Mateo County, California. This study was conducted to...

The residential water heating market in the U.S. is dominated by storage water heaters with 96 percent share and roughly equal sales for electric resistance and natural gas heat sources. Over the last half decade, two water heating technologies have entered the market place bringing significant...

Project Summary Field tests confirmed 1.07 gpm appeared to be the low limit for pre-rinse spray valves used in 6 restaurants in the LA area. The low-flow retrofit achieved an average of 24.9% energy savings, despite an observed increase in average daily use time. The energy and water savings...