Duke Energy has been a leader in battery energy storage since 2013 when the 36-megawatt (MW) Notrees Energy Storage project came online next to a company wind farm in Texas.
Duke Energy continues to push ahead in the emerging battery storage market. The versatility of battery storage systems makes the technology a natural extension of the energy grid. The company will apply years of engineering and operating experience to maximize its full potential.
Duke Energy plans to spend roughly $600 million over the next five to 10 years to expand battery storage by almost 400 MW. A number of these projects made significant progress in 2019.
In Nabb, Indiana, a battery will be installed near an existing substation. This installation will be used to provide grid benefits as well as backup customer power in the event of a power outage.
Also in Indiana, a customer microgrid solution that includes a 2-MW solar array and a 5-MW battery for energy storage is under construction at the National Guard’s Camp Atterbury site.
In Florida, the 5.5-MW Cape San Blas lithium-based battery facility will be located about 40 miles southeast of Panama City in Gulf County. The project is an economical alternative to replacing distribution equipment necessary to accommodate local load growth.
In Madison County, North Carolina, a microgrid system will consist of a 2-MW solar facility and a 4-MW lithium-based storage facility. This will provide a safe, cost-effective and reliable grid solution to serve hundreds of customers in the Hot Springs community. It will also provide support services to the overall grid.
Of course, batteries are not the only energy storage method. The company has more than 2,000 MW of pumped storage hydro power. Over the next three years, Duke Energy will increase the capacity at its Bad Creek facility in South Carolina by about 320 MW as it upgrades the facility.