State-run Korea Electric Power Corporation (Kepco) is to invest 650bn Korean won (US$612m) in establishing an energy storage system by 2017.
A total of 625bn won will be spent on creating a frequency regulation energy storage system with a total capacity of 500 MW.
Kepco said this would improve efficiency in ensuring electricity frequency as coal-fired plants currently have to reserve 5% of their power for that purpose.
Kepco said the savings from allowing coal-fired plants to operate at full capacity would amount to 350bn won. A further annual saving of 300bn won would be realised by purchasing cheap energy resources.
