South Korea to Enhance Energy Storage to Solve Renewable Energy Connection Issues
The South Korean government is set to tackle renewable energy connection challenges by significantly expanding energy storage solutions in the power distribution network. The plan involves installing a large number of Energy Storage Systems (ESS) along distribution lines, which will expedite the connection of new power generation facilities such as solar energy.
On the 20th, the Ministry of Climate, Energy, and Environment hosted a forum on decentralized power networks at the Lotte Hotel in Jung-gu, Seoul, unveiling plans for the construction of a next-generation decentralized power network. This year, the government plans to invest 321 billion won (approximately $270 million) to begin the installation of 20 ESS units, with a goal of a total of 85 ESS installations by 2030. Once all these systems are operational, the government estimates that it could connect an additional 485 megawatts (MW) of solar power capacity to the grid.
Instead of laying new high-voltage transmission lines, this approach will add buffer devices to the existing distribution network. Although solar power installations have been rapidly increasing, the expansion of the power grid has not kept pace. Consequently, there have been instances where power plants have had to wait for years to connect to the grid after construction. This situation is particularly concerning in regions densely populated with renewable energy sources, such as the Honam area, where output restrictions may become routine.
To accelerate the growth of ESS, the government is introducing a Non-Wires Alternative (NWA) system. This initiative aims to resolve power congestion through ESS rather than constructing new transmission lines or substations. In return for alleviating congestion with ESS, operators will receive compensation for some of the savings on construction costs. The NWA program will first be implemented in Jeju in the first half of this year and is expected to expand to other regions in the latter half.
Additionally, the criteria for connecting renewable energy plants to the grid will be relaxed. If developers agree to reduce their output when necessary, the capacity allowed per distribution line will increase from the current 14 MW to 16 MW.
The role of Korea Electric Power Corporation (KEPCO) will also be transformed. Rather than merely managing the wires, KEPCO will take a more active role in facilitating these changes to improve the integration of renewable energy into the national grid.
On the 20th, the Ministry of Climate, Energy, and Environment hosted a forum on decentralized power networks at the Lotte Hotel in Jung-gu, Seoul, unveiling plans for the construction of a next-generation decentralized power network. This year, the government plans to invest 321 billion won (approximately $270 million) to begin the installation of 20 ESS units, with a goal of a total of 85 ESS installations by 2030. Once all these systems are operational, the government estimates that it could connect an additional 485 megawatts (MW) of solar power capacity to the grid.
Instead of laying new high-voltage transmission lines, this approach will add buffer devices to the existing distribution network. Although solar power installations have been rapidly increasing, the expansion of the power grid has not kept pace. Consequently, there have been instances where power plants have had to wait for years to connect to the grid after construction. This situation is particularly concerning in regions densely populated with renewable energy sources, such as the Honam area, where output restrictions may become routine.
To accelerate the growth of ESS, the government is introducing a Non-Wires Alternative (NWA) system. This initiative aims to resolve power congestion through ESS rather than constructing new transmission lines or substations. In return for alleviating congestion with ESS, operators will receive compensation for some of the savings on construction costs. The NWA program will first be implemented in Jeju in the first half of this year and is expected to expand to other regions in the latter half.
Additionally, the criteria for connecting renewable energy plants to the grid will be relaxed. If developers agree to reduce their output when necessary, the capacity allowed per distribution line will increase from the current 14 MW to 16 MW.
The role of Korea Electric Power Corporation (KEPCO) will also be transformed. Rather than merely managing the wires, KEPCO will take a more active role in facilitating these changes to improve the integration of renewable energy into the national grid.
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