Korean Industry Weighs District Electricity for Fabs Amid Capacity Market Squeeze
Korean industries, including SK Group, are considering District Electricity Business as an alternative power supply for new semiconductor fabs. This comes as competition intensifies for limited 1.3 GW capacity market volumes, pushing companies to explore direct supply models despite their economic challenges.
Our take
Will Korea's semiconductor power demand open a route for new gas-fired CHP outside the capacity market?
Only a narrow one: district electricity licences let new gas-fired CHP plants bypass the contested 1.3 GW capacity auction, but with limited capacity payments and a 70% self-supply duty, they work only where steam demand and LNG prices support running the plant.
In favour, demand for new CHP is reported to far exceed the auction volume, and fabs need process steam as well as power, which a local licence can supply directly. Against that, existing industrial-complex operators buy close to half their power from KEPCO when self-generation costs more, and new licensees have far less of that option because they must self-supply at least 70%. The deciding factor is permitting: whether the 12th basic plan for electricity supply and demand sets aside volumes for new licences, and how they would be allocated, is undecided, so the capacity auction remains the bankable route and district electricity a fallback.
What the source says
- SK Group Chairman Choi Tae-won stated on October 9, 2026, his intent to prioritize semiconductor fab construction at the Honam Semiconductor Cluster site, even if power and water supply are delayed.
- An unnamed industry official stated that competition for new Combined Heat and Power (CHP) volumes is intensifying across various sectors, and while District Electricity Business is being considered due to limited capacity market volumes, its business viability and future permitting conditions require careful evaluation.
- District Electricity Business allows installing generation facilities in a specific supply area and directly selling electricity to local consumers, requiring a separate electricity business permit rather than competitive bidding for capacity prices.
- New District Electricity Business operators face a self-supply obligation to provide over 70% of their supply area's power demand from self-generated electricity, incurring additional settlement burdens if not met.
- District Electricity Business faces economic viability challenges due to limited capacity payment (CP) revenue and high sensitivity to LNG fuel costs, potentially making external power purchases more economical if self-generation costs are higher.
- As of 2024, 8 industrial complex District Electricity Business operators sourced 44.2% of their total power (approx. 6.47 million MWh) from KEPCO, indicating significant external power reliance.
- Korean government The Korean government is pursuing transmission network expansion and power source 확보 to meet semiconductor cluster power demand, recognizing the need for stable supply of both large-scale electricity and process heat.
- Bidding announcements for the capacity market are expected by the end of 2026.
- The industry observes a possibility that the government may separately reflect new District Electricity Business volumes in the 12th Basic Plan for Long-term Electricity Supply and Demand.
For investors — Gas-fired CHP developers and lenders: treat district electricity as a fallback to the capacity auction, not a substitute. Underwrite it on steam sales and on the cost gap between self-generation and grid purchases, with the 70% self-supply duty as a binding constraint, and wait for the 12th basic plan before pricing licence volumes.
Corporate buyers, including fab operators: on-site CHP can secure power and process heat ahead of grid reinforcement, but the supplier's economics move with LNG prices; check how fuel cost feeds into the power and steam tariff before signing.
Watch: Monitoring the details of the 12th Basic Plan for Long-term Electricity Supply and Demand for specific provisions on new District Electricity Business volumes and permitting processes.
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