This report documents the evaluation of the energy and on-peak demand savings attributable to the eco+ software feature that was rolled out to ecobee thermostats in the San Diego Gas & Electric Co. (SDG&E) service territory. The implementation of the feature was conducted on a randomized...

This project’s goals are to test optimization of connected thermostats and other loads via voice commands based on TOU rate peak times and customer preferences. Voice interactions related to energy (usage, estimated bills, best times to use appliances, etc.) will undergo evaluation to determine...

This study investigated the technical and market feasibility and consumer acceptance of residential sensor-based range hoods to automate range hood operation to improve indoor air quality (IAQ) and occupant health. Goals of the study included:Identifying existing and emerging products that use...

This report presents the results of PG&E’s Smart Thermostat Time-of-Use (TOU) Automation Study with a bring your own thermostat program design. The study provided incentives to residential customers who allowed PG&E to reduce or shift their electricity use in the 4–9 pm peak...

This study was designed to help those involved with development and implementation of California’s Title 24, Part 6, Building Energy Efficiency Standards (“Title 24”) better understand real-world performance of dedicated outdoor air systems (DOAS). DOAS ventilation, which...

The purpose of this literature review is to present the current state of knowledge about the Controlled Environment Horticulture (CEH) industry and its energy and water use and to identify potential energy saving measures for consideration in future California Energy Code cycles. Gaps in knowledge...

The emerging technology assessed in this study is a packaged RTU that integrates a heat pump with an indirect-direct evaporative cooling (IDEC) system that is designed as a direct replacement for a traditional RTU. This project evaluates a Hybrid system in a field study and compares its...

This report describes the key economic costs and benefits, as well as emissions avoided, of a code change requiring zero emissions cooking equipment in new commercial food service kitchens in California. This research forecasts the costs and benefits associated with a 2022 intervening code change,...

This report describes the key economic costs and benefits, as well as emissions avoided, of a Title 24 code change requiring zero emissions cooking equipment in new residential single- and multi-family homes. This research forecasts the costs and benefits of a 2022 intervening code change, which...

This study evaluated the performance of unitary heat pump water heaters (HPWHs) operating in a shared configuration (each unit served four apartments) in an affordable all-electric multi-family project located in Davis, CA. The shared configuration allowed the HPWHs to be placed in close proximity...