'Expert in a suitcase' cuts power bills 10% in small commercial buildings

Sensor Suitcase licensed by two companies to make energy efficiency easier

News Release

June 01, 2017

• Frances White, PNNL, (509) 375-6904
• Julie Chao, Berkeley Lab, (510) 486-6491

BERKELEY, California and RICHLAND, Wash. - The knowledge and expertise of a seasoned energy efficiency professional has been packed into a high-tech suitcase.

The Sensor Suitcase is a portable case that contains easy-to-use sensors and other equipment that make it possible for anyone to identify energy-saving opportunities in small commercial buildings. The automated and reusable system combines hardware and software in one package so its users can identify cost-effective measures that save small commercial buildings about ten percent on their energy bills.

Jointly developed by 2 D.O.E. labs, Pacific Northwest National Lab and Lawrence Berkeley National Lab, the Sensor Suitcase has been licensed by 2 companies that project to provide products or services based on the technology. The licensees are GreenPath Energy Solutions and Cultural Quotient.

"Most small commercial building owners believe it costs too much to make their facilities significantly more energy efficient," said scientist Michael Brambley, who led PNNL's development team. "But the Sensor Suitcase system can change that. It helps someone with minimal training collect and automatically process building data, which the system uses to generate specific recommendations to enhance energy efficiency. The U.S. could reduce its national energy costs by about $5.1 billion if all small commercial buildings used this technology."

Implementing energy efficiency measures in small commercial buildings has been notoriously difficult, said mechanical engineer Jessica Granderson, who led Berkeley Lab's development team.

"The real innovation is in the streamlining," said Granderson, who is also a deputy director of Berkeley Lab's Building Technology and Urban Systems Division. "It's kind of like the 'for dummies' version of how to identify enhancements in your building. Instead of hiring a professional engineer to conduct a full energy evaluation, you could get just about anyone to do it."

The Sensor Suitcase is designed to reduce energy use in existing buildings by finding ways to enhance the way they operate, a practice energy-efficiency professionals call "retro-commissioning." Large commercial buildings often have the resources needed for retro-commissioning, while smaller buildings with 50,000 square feet or less don't. PNNL and Berkeley Lab developed the Sensor Suitcase to overcome that hurdle.

How it works

Inside the suitcase sit 16 pocket-sized sensors that can measure 3 things: temperature, whether lights are on or off, and how a heating and cooling system is operating. Users follow clear instructions from the Sensor Suitcase's operations software, which runs on a separate tablet, to install sensors inside a building.

About a month later, users gather the sensors and return them to the suitcase, which users then connect to a personal computer so they can transfer the collected energy data. The system's unique analytical software is used to automatically crunch the sensor data, eliminating the need to hire a professional to manually plot, inspect and interpret data.

The final result is a report that identifies problems (such as excessive lighting), recommends low- and no-cost ways to fix problems (such as installing occupancy sensors that turn lights on only when a room is being used), and provides estimated cost savings for addressing each problem.

Enhancements

The Sensor Suitcase system focuses on 8 of the most common and cost-effective areas to enhance energy efficiency in small commercial buildings. As a result, it can help building owners save about two-thirds of the energy that can be saved with the traditional approach to retro-commissioning, which requires the hands-on labor of several energy-efficiency professionals, who are often engineers. Conducting a traditional retro-commissioning assessment takes 6 months or longer, while doing the same assessment with a Sensor Suitcase takes 4 to 6 weeks and costs about a 3rd of traditional retro-commissioning services.

Small building owners can buy and use the Sensor Suitcase themselves, but it will likely be more practical for them to hire an outside company that provides services based on the technology. Additionally, utilities could lend the technology to commercial building-owning customers or otherwise encourage its use. Though the Sensor Suitcase is intended for small commercial buildings, it could also be used to supplement energy retrofits at large commercial buildings.

Heading to the market

GreenPath Energy Solutions of Orlando, Fla., a provider of energy-efficient building solutions, will offer both a product and services with the Sensor Suitcase technology. The company helps facility managers and building owners control their operational, energy and facility costs by providing energy auditing, retro-commissioning and software solutions. GreenPath projects to market its product and services to federal, state and local governments through its GSA Schedule contract with the General Services Administration.

Cultural Quotient of Arlington, Va., will offer a product based on the technology. The company will make and sell its product as a partner with the manufacturing firm Zepher, Incorporated, of Bingen, Wash. CQ Corporation is also partnered with the Chicago-based nonprofit Invent2026 to sell CQ's Sensor Suitcase-based product to local and state government entities in the Midwest, as many small businesses lease or occupy local government-owned buildings.

Both licenses are non-exclusive, meaning the Sensor Suitcase technology is also accessible for other companies to license. Those interested in learning more about a license can contact Jenn Lee.

PNNL and Berkeley Lab jointly developed the Sensor Suitcase concept, with PNNL focusing on the technology's hardware and tablet software and Berkeley Lab focusing on its analytics software. DOE's Oak Ridge National Lab helped create the technology's sensors for its 2nd prototype. The technology's development was supported by DOE's Office of Energy Efficiency and Renewable Energy.

Tags: Energy, Technology Transfer and Commercialization, Energy Efficiency

Lawrence Berkeley National Lab addresses the world's most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab's scientific expertise has been acknowledged with 13 Nobel Prizes. The University of California manages Berkeley Lab for the D.O.E.'s Office of Science.

Interdisciplinary teams at Pacific Northwest National Lab address many of America's most pressing issues in energy, the environment and national security through advances in basic and applied science. Founded in 1965, PNNL employs 4,400 staff and has an yearly budget of nearly $1 billion. It is managed by Battelle for the D.O.E.'s Office of Science. As the single biggest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information on PNNL, visit the PNNL News Center, or follow PNNL on Facebook, Google+, Instagram, LinkedIn and Twitter.

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