Empowering Energy Efficiency in Existing Big-Box Retail/ Grocery Stores

Demonstrate a suite of pre-commercial energy efficiency technologies at a large, existing, box-retail building.

Center for Sustainable Energy

Recipient

San Diego, CA

Recipient Location

39th

Senate District

78th

Assembly District

beenhere

$2,824,557

Amount Spent

closed

Completed

Project Status

Project Result

in 2020, the team identified a new lighting technology with I2 Systems, Inc. The lighting system uses DC drivers to power the LED lights in the store. NREL completed the optimization report which outlined the modeling of the suite of measures to be installed at the store. The modeling predicts that the measures will achieve the overall goal of reducing the site's electricity consumption by 20%. In 2020, construction began with installation of new efficient motors for the RTU and refrigeration systems. In 2021, the project is expected to complete installation and begin their 12 months of post-retrofit data collection.

The Issue

California Senate Bill 350 aims to double statewide electricity end use savings from energy efficiency and conservation measures by 2030. Meeting this aggressive target will require the commercial building industry to install holistic energy efficiency technology packages that are emerging, pre-commercial products. According to the 2013 Navigant California Potential and Goals Study, aging, existing commercial buildings, particularly in inland communities, present the greatest energy savings potential. Emerging technologies such as retrofit RTU motors, DC lighting, direct-evaporative cooling, and a cloud-based control platform will demonstrate 20% onsite energy reduction.

Project Innovation

This project demonstrates the impact of an integrated suite of pre-commercial energy efficiency technologies in a large, existing, retail building located near a disadvantaged community. One of the technologies that comprise the installation package includes a novel supervisory controller to provide system-wide optimization, to reduce electricity consumption across numerous building subsystems, including lighting, refrigeration, and heating, ventilation, and air-conditioning. This could enable site electricity savings of greater than 20%.

Project Benefits

This project demonstrates how pre-commercial energy efficient technologies can deliver cost-effective, deep electric savings in a big-box retail environment, while also showcasing the demand reduction potential of these strategies. The project team will install a holistic suite of pre-commercial technologies such as a variable speed rooftop unit (RTU), high rotor pole switched reluctance (HRPSR) retrofit motor, direct current (DC) LED technology, direct-evaporative cooling to treat RTU condenser inlet air, and a cloud-based control system that will monitor all systems and detect energy waste, equipment malfunctions, and other operational problems. These technologies have the ability to demonstrate 20% energy savings.

Lower Costs

Affordability

The project could result in lowering on-site electricity use by 20 percent.

Greater Reliability

Reliability

The project adds valuable capacity to California's electrical transmission and distribution system by reducing power consumption of packaged HVAC systems which are disproportionately responsible for critical capacity shortfalls on the grid. The demand response controls will maximize the use of variable renewable resources, such as the site's PV system.

Key Project Members

Project Member

Rebecca Baptise

Project Manager

Subrecipients

Rocket

Southern California Edison

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U.S. Department of Energy, National Renewable Energy Laboratory

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TRC Engineers, Inc.

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Integrated Comfort

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DAV Energy Solutions, Inc.

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Software Motor Corporation

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Walmart

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P2S Engineering

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Apana, Inc.

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i2 Systems California

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Rector Law Office

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Match Partners

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Southern California Edison

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Center for Sustainable Energy

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TRC Engineers, Inc.

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Software Motor Corporation

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Walmart

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LumaStream LLC

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i2 Systems California

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Rector Law Office

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Contact the Team

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