Stasis Energy Group Thermal Energy Storage System (TESS) for Packaged HVAC Systems

The Issue

The California Energy Commission (CEC) and California IOUs face a daunting challenge to transition to 100% renewable energy by 2045. California’s climate goals will require reduction of peak period electric usage, when Greenhouse Gas (GHG) emissions are highest. Reducing energy use in existing buildings will be crucial to achieving these goals. Flexible distributed energy resources (DERs) can help California succeed in this transition, and these DERs require thermal batteries such as TESS, electric batteries, and other types of resources. New products and technologies, such as the Recipient’s TESS, must be developed and introduced to the market to reach these goals. Benefits to California’s energy providers and utilities must include reduction in peak energy use when power is the most expensive and when generating power has the highest carbon intensity. Benefits must be shared with ratepayers in the form of lower utility bills.
Packaged HVAC roof-top equipment services as much as 70% of California’s light commercial floor space, accounting for more than 22 billion kWh per year. Up to 95% of these RTUs, approximately 5 million tons of HVAC capacity, are sized at 10 tons or less. Most units have 10-20 years of service life remaining. Few, if any, technologies adequately and economically address this large market. Late afternoon and evening energy used by commercial buildings RTUs have proven to be a hard-to-reach segment of California’s electricity usage.