Nippon Steel's transition hurdles
Nikkei reported that Nippon Steel's plan to move from blast furnaces to electric‑arc furnaces is encountering hurdles tied to electricity availability and power pricing. (asia.nikkei.com) The report frames energy supply and raw‑material economics as practical constraints on decarbonising heavy industrial processes. (asia.nikkei.com)
Nippon Steel is finding that cleaner steel still needs two old-fashioned things: enough electricity and a way to pay for it. (asia.nikkei.com) The company said on May 30, 2025 that it would spend ¥868.7 billion to add or upgrade three electric arc furnaces at Kyushu Works, Setouchi Works and Yamaguchi Works, with production capacity of about 2.9 million tons a year by fiscal 2029. Japan’s government selected the project for support of up to ¥251.4 billion under the Green Transformation Promotion Act. (nipponsteel.com) Nippon Steel said the switch from blast furnaces to electric arc furnaces would cut carbon dioxide emissions but also raise production costs through higher spending on raw materials and electricity. The company said the investment also needs power-supply measures and a predictable way to recover the cost. (nipponsteel.com) An electric arc furnace melts metal with electricity instead of using coke and iron ore in a blast furnace. Japan’s industry ministry says the blast-furnace route emits large amounts of carbon dioxide, while electric furnaces rely on scrap steel but face limits in scrap supply and product purity. (meti.go.jp) That tradeoff sits at the center of Japan’s steel policy. The Ministry of Economy, Trade and Industry says the steel industry produced about 138 million tons of carbon dioxide in 2022, equal to about 38% of industrial-sector emissions and 13% of Japan’s total emissions. (meti.go.jp) Nippon Steel has not presented electric furnaces as a complete replacement for blast furnaces. In its climate plans, the company says it is pursuing three tracks at once: large electric arc furnaces for high-grade steel, direct reduced iron made with hydrogen, and hydrogen injection into blast furnaces, with a 30% emissions cut from 2013 levels by 2030 and carbon neutrality by 2050. (nipponsteel.com; nipponsteel.com) The company has also been explicit that the bottleneck is not only technology. In a March 13, 2025 presentation, Nippon Steel said carbon-neutral steelmaking will require “huge quantities” of cost-effective hydrogen and decarbonized energy, plus rules that let lower-carbon steel earn a premium in the market. (nipponsteel.com) Japan’s industry ministry is trying to build that market from the demand side as well as the supply side. METI said in 2025 that it had started using the Green Procurement Law and clean-vehicle subsidies to encourage manufacturers to buy lower-emissions steel despite its cost premium. (meti.go.jp) The wider problem is not unique to Japan. The World Steel Association says steel accounts for 7% to 9% of global carbon dioxide emissions, and the International Energy Agency says conventional blast furnace-basic oxygen furnace plants still make about 70% of the world’s steel. (worldsteel.org; iea.org) So Nippon Steel’s project is moving ahead on paper, with sites, subsidies and startup dates already set. The harder part is making sure the grid, scrap market and customers can support cleaner steel at industrial scale before those furnaces switch on. (nipponsteel.com; asia.nikkei.com)
