[앵커]
It was difficult to store electricity, but the government plans to store 18% of electricity by expanding the ESS, or energy storage device, by 2036.
The problem is that the current lithium-based ESS has a high risk of fire, but the government has decided to foster a long-cycle, large-capacity ESS that reduces the risk of fire in the future.
This is Reporter Lee Seung-yoon.
[기자]
Hyundai Electric, a power equipment and energy related company under HD Hyundai, supplies a 336MW ESS energy storage device,
ESS, which stores the remaining electricity and supplies it when needed, is an essential infrastructure to increase the efficiency of renewable energy such as solar and wind energy.
Operators store electricity in ESS when electricity is cheap and sell it when electricity is expensive, earning a profit and contributing to the stabilization of the power grid.
The government has decided to foster the ESS industry by investing 45 trillion won by 2036 with a scale of 26GW, or 18% of the total capacity of the power generation facility.
The global ESS market is expected to grow rapidly as developed countries such as the United States have suffered large-scale power outages due to climate change such as heat waves and cold waves.
The problem is that there have been 10 fires in lithium-based ESS over the past two years, and the related industry has been slow.
[김재철 / 숭실대학교 전기공학부 교수 (2020년) : 배터리에서 일부 파편이 양극판에 접착되어 있는 것과 배터리 분리막에서 리튬 추출물이 형성된 것을 확인하였습니다. 배터리 이상을 화재 원인으로 저희는 추정하였습니다.]
Accordingly, the Ministry of Trade, Industry and Energy decided to foster four types of lithium-free, battery-free, long-cycle, large-capacity ESSs with low fire risk: sodium-sulfur and vanadium redox flow batteries, compressed air storage devices, and thermal storage devices.
The Ministry of Trade, Industry and Energy expects to add to the instability of the power system in Jeju and Honam, where the proportion of renewable energy is high, and to recycle coal-fired power plants by introducing long-cycle and large-capacity ESS.
This is Lee Seung-yoon’s YTN.
YTN Lee Seung-yoon (risungyoon@ytn.co.kr)
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