Exelon to double its storage capacity with 10 MW Ohio project

Dive Brief:

Exelon will partner with Renewable Energy Systems on a 10 MW battery storage facility in Clinton County, Ohio, with construction expected to be completed this fall. The facility will connect into the PJM grid.
Exelon Generation will own and operate the facility, while RES is the project developer and will handle construction. The units, which will be housed in three semi-trailer-sized units, are expected to be online by the end of the year.
Targeting frequency regulation, Exelon said the units would be managed by a proprietary technology developed by RES, designed to "maximize revenue and minimize battery degradation."

Dive Insight:

Exelon's new battery project will double its total energy storage capacity, which is to say the technology is still just getting started. The company will have approximately 20 MW of battery storage capacity, adding the Clinton project to nearly 10 MW owned through Exelon's competitive energy company, Constellation.

"Exelon continues to invest in new technologies, such as battery storage, to further diversify our generation portfolio," said Corey Hessen, vice president of Exelon generation development. "Exelon's deployment of battery storage technology provides customers and grid operators with innovative solutions to meet their technical requirements and enhance system reliability."

Exelon said the entire storage unit footprint is less than one-third of an acre and can be put in place in just a few months.

"Having constructed over 70 MW of energy storage projects with 140 MW of operational range throughout North America, RES is excited to work with Exelon to provide frequency regulation service to PJM," said Matthew Krivos, director of energy storage at RES.

The project will use Samsung SDI's lithium-ion battery energy storage system, with the company providing more than 16,000 high-power batteries. The facility will also utilize five Parker Hannifin 2-MW power conversion systems.

The Clinton County storage facility is the second joint project between Exelon Generation and RES. Earlier this year, the two companies announced the 198 MW Bluestem Wind Project in Beaver County, Okla., with a power purchase agreement executed with Google.