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Scalable Thermochemical Option for Renewable Energy Storage (STORES)

Michigan State University

Scalable Thermochemical Option for Renewable Energy Storage (STORES)

Program: 
ARPA-E Award: 
$1,999,950
Location: 
East Lansing, MI
Project Term: 
01/23/2019 to 07/22/2021
Project Status: 
ACTIVE
Critical Need: 
Stationary electrical energy storage plays several important roles in the U.S. electricity system, and these are expected to grow as the grid continues to evolve. Long-duration energy storage systems address grid needs beyond those covered by daily cycling. Such systems could provide backup power for several days, improving grid resiliency, or allow for the integration of even larger amounts of intermittent renewable sources like wind and solar. In the near term, such systems could help shape the output from individual wind and solar installations, improving the reliability of these resources and thus greatly increasing their value to the grid.
Project Innovation + Advantages: 
The Michigan State University team will develop a modular thermal energy storage system that uses electricity from sources like wind and solar power to heat up a bed of magnesium manganese oxide (Mg-Mn-O) particles to high temperatures. Once heated, the Mg-Mn-O will release oxygen and store the heat energy in the form of chemical energy. Later, when additional power is needed, the system will pass air over the particle bed, initiating a chemical reaction that releases heat to drive a gas turbine generator. The low cost of magnesium and manganese oxides will enable the system to be cost competitive.
Potential Impact: 
If successful, DAYS projects will provide new forms of long-duration stationary electricity storage systems that enhance grid resiliency, provide low-cost energy capacity, support grid infrastructure, and enable a greater share of intermittent renewable resources in the generation mix.
Security: 
Long-duration storage can help prevent blackouts and smooth overall grid operation, improving resilience and enhancing grid security.
Environment: 
New, extended storage options could enable greater integration of intermittent renewable energy sources, greatly reducing emissions from the power sector.
Economy: 
Energy storage technologies could help improve grid efficiency and promote the growth of domestic renewable energy sources.
Contacts
ARPA-E Program Director: 
Dr. Scott Litzelman
Project Contact: 
Professor Joerg Petrasch
Release Date: 
9/18/2018