This week Duke Energy said that it plans to deploy about $500 million of battery storage capacity over the next 15 years, which it estimates to be equivalent to about 300 MW of capacity. (MWh of capacity was not specified.) The storage capacity investment is written into its latest Integrated Resource Plan (IRP)
Combining battery storage from all utilities, North Carolina has only about 15 megawatts of battery storage capacity in operation, and far less in South Carolina, so the IRP represents an almost 20-fold increase in storage for the region.
As the grid operator, Duke Energy can maximize the versatility of storage beyond storing and dispatching of energy to include other customer and system benefits such as system balancing and deferral of traditional grid upgrades.
“Duke Energy is at the forefront of battery energy storage, and our investment could increase as we identify projects that deliver benefits to our customers,” said Rob Caldwell, president, Duke Energy Renewables and Distributed Energy Technology.
“Utility-owned and operated projects in North Carolina and South Carolina will include a variety of system benefits that will help improve reliability for our customers and provide significant energy grid support for the region.”
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