Korea expands mandatory DER monitoring to 20kW
Korea's Ministry of Climate, Energy, and Environment announced the revision of the 'Transmission and Distribution Line Electric Facility Usage Regulations' to expand mandatory monitoring and control equipment for renewable energy generation facilities from 90kW to 20kW, effective January 1, 2027.
Our take
Will Korea's 20kW monitoring rule expose small solar plants to remote curtailment?
Yes, because from January 2027 Korean solar, wind and fuel-cell plants of 20kW or more that sell power must install equipment that lets the grid operator see and remotely reduce their output.
The equipment itself is a small cost, about 2 million won on a commercial LTE link instead of 4.6 million won. How much output small plants lose depends on how often the operator uses that control, which the announcement does not quantify.
For investors — Solar developers and buyers of small-plant portfolios should budget the monitoring unit for every site from 20kW to 90kW and add a curtailment allowance for sites on congested lines.
VPP operators aggregating small plants should check whether the new real-time link can also carry the data they need for their own dispatch and settlement.
Watch: Implementation of revised rules on the use of transmission and distribution facilities mandating monitoring and control for 20kW+ renewable energy facilities.
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