According to preliminary figures for 2023, crude oil, refinery feedstocks, and petroleum products formed the largest amount of the primary energy supply in South Korea. Coal came in second place at around ** million tons of oil equivalent.
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KOSIS, & Korea Energy Economics Institute. (February 6, 2025). Amount of primary energy supplied in South Korea in 2023, by source (in million toe)* [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/974568/south-korea-primary-energy-supply-amount-by-source/
KOSIS, und Korea Energy Economics Institute. "Amount of primary energy supplied in South Korea in 2023, by source (in million toe)*." Chart. February 6, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/974568/south-korea-primary-energy-supply-amount-by-source/
KOSIS, Korea Energy Economics Institute. (2025). Amount of primary energy supplied in South Korea in 2023, by source (in million toe)*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/974568/south-korea-primary-energy-supply-amount-by-source/
KOSIS, and Korea Energy Economics Institute. "Amount of Primary Energy Supplied in South Korea in 2023, by Source (in Million Toe)*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Feb 2025, /statistics/974568/south-korea-primary-energy-supply-amount-by-source/
KOSIS & Korea Energy Economics Institute, Amount of primary energy supplied in South Korea in 2023, by source (in million toe)* ÌÇÐÄÆƽâ°æ, /statistics/974568/south-korea-primary-energy-supply-amount-by-source/ (last visited July 24, 2026)
Amount of primary energy supplied in South Korea in 2023, by source (in million toe)* [Graph], KOSIS, & Korea Energy Economics Institute, February 6, 2025. [Online]. Available: /statistics/974568/south-korea-primary-energy-supply-amount-by-source/
