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...

Project Summary SoCalGas ETP has conducted a series of home tests for residential hot water recirculator “comfort systems.” The results show water savings for all products, but gas savings will depend on user’s behavior.  Results should be applicable to electric water heaters, too. DIY...

The main purpose of this study is to analyze and identify existing end-use loads that are sizeable enough and flexible enough to help address operational and planning needs and to determine if these loads can be managed through existing programs or, if not, through modified and new...

This assessment implemented and evaluates the costs and conversion challenges associated with transitioning from OpenADR 1.0 to 2.0 in various sites that already use OpenADR 1.0 to participate in PG&E automated demand response (AutoDR)...

The emerging technology (ET) presented in this report is an HVAC management system with dynamic energy and demand optimization designed for commercial rooftop units (RTUs) and split system applications. The ET replaces a traditional thermostat with multiple sensors that measure dry-bulb temperature...

A desktop study was performed to evaluate the accuracy and usefulness of an online service that infers home thermal performance characteristics from electricity consumption (from Green Button data) and weather (from the vendor’s proprietary network of stations). The service provides customers...

Advanced lighting control systems provide networked control and monitoring capabilities of connected luminaires via onboard metering and system reporting features. These advanced features allow system owners to dynamically balance visual comfort and lighting energy use. CLTC, in collaboration with...

This project evaluates the lighting performance and energy savings potential of a Lamp-style Retrofit Kit, External Driver (a solution with separate lamp and driver), combined with a Wireless Advanced Lighting Control System (ALCS) to achieve additional energy savings and DR...

The model-based predictive HVAC control enhancement saves energy by generating a predictive model of building operations, then optimizing heating, ventilation, and air conditioning (HVAC) system operations to meet these predicted loads. The specific model-based predictive HVAC control studied in...

This assessment consisted of a side-by-side comparison of two otherwise nearly-identical milk chillers; one with a finned-tube air-cooled condenser with fan cycling on pressure switches, and the other system with a microchannel air-cooled condenser. The project incrementally assessed the...