South Korean Companies

KEPCO Earnings: Are Lower Fuel Costs Enough to Judge Performance?

Separate KEPCO’s electricity selling prices, sales volumes, fuel costs, and purchased power costs. Examine input-price lags, consolidation scope, financing costs, and grid investment to understand the gap between profit and cash.

KEPCO’s earnings require examining electricity selling prices and sales volumes alongside generation fuel costs and externally purchased power costs. Lower international fuel prices can improve costs, but the effect depends on exchange rates, pass-through lags, and generation mix. Even recovering operating profit may not provide ample cash because of interest payments and grid investment.

Separate selling prices from electricity sales volumes

Sales revenue depends on customer mix and the tariff structure as well as consumption. Even for the same amount of electricity, changes in the mix of industrial, general-use, residential, and other customers can alter the average selling price. Align revenue and sales volume coverage in KEPCO’s official IR management presentation materials, and consider seasonality and temperature effects. Distinguish discussions or expectations of tariff adjustments from tariffs already finalized. Treating a policy whose implementation is unconfirmed as certain in cash flow forecasts undermines the analysis’s basic assumptions.

Avoid double-counting fuel and purchased power costs

On a consolidated basis, examine fuel consumption at generation subsidiaries alongside the cost of externally purchased electricity. Mixing KEPCO’s standalone purchased power costs with consolidated expenses can double-count internal transactions. Even when coal and gas prices move, actual costs may reflect lags from purchase contracts, transportation, inventory, and exchange rates. Look beyond the price of a single fuel to generation volumes by source, including nuclear power. Even at the same electricity demand, average procurement costs can vary with the generation mix.

The gap between operating profit recovery and financial recovery

Even if lower fuel costs improve operating profit, interest on accumulated borrowings and transmission and distribution investment consume cash. Check how much financing costs affect the progression from operating profit to net income, and compare operating cash flow with capital expenditure payments. Valuing the company by fixing a temporary fuel price decline as the long-term price makes the result highly sensitive to that assumption. Varying selling prices, exchange rates, and fuel costs separately to examine the direction of earnings helps distinguish policy changes from market price risk.

Worked example

Hypothetical example: Selling 10 billion kWh of electricity at an average of KRW 150 on a consistent basis generates KRW 1.5 trillion in revenue. If average procurement costs fall from KRW 120 to KRW 110 per kWh, costs decline by KRW 100 billion, all else equal. However, this calculation excludes selling, transmission and distribution costs, financing costs, taxes, and investment spending. Treating the improvement directly as net income or dividend funding would be incorrect, and the example does not represent actual KEPCO unit prices.

What to check

  • Have you aligned the units for electricity volume and selling price?
  • Have you avoided mixing consolidated and standalone purchased power costs?
  • Have you examined fuel-price recognition lags and exchange rates?
  • Have you checked interest costs alongside transmission and distribution investment?

Sources and primary materials

This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.

  1. Korea Electric Power Corporation IR Materials ↗
  2. KEPCO Form 20-F for Fiscal Year 2025 ↗