High energy prices in the UK, significantly higher than those in France and Germany, are weighing on the nation's steel industry as it attempts to transition to lower-emission production. UK steelmakers pay $7-$12/MWh more for electricity than their key European competitors, leading to a 14-25% higher cost. This disparity exacerbates the challenges of shifting from highly polluting blast furnaces to greener electric arc furnaces (EAFs), which are up to 25% more expensive to run in the UK compared to other European markets.
Despite the cost hurdles, the move to EAFs is crucial for meeting emission reduction targets. Tata Steel has already begun replacing its blast furnaces at Port Talbot, previously the UK's largest CO2 emitter, with EAFs. Similarly, British Steel plans to replace its aging blast furnaces in Scunthorpe. The iron and steel industry is responsible for about 7-9% of total global greenhouse gas emissions, making this transition vital for climate goals. However, the international energy agency's Net Zero by 2050 scenario suggests that over 53% of steelmaking capacity should use EAFs by 2050, but current plans only project 32%.
While EAFs offer a significant reduction in emissions by melting scrap steel, achieving near carbon neutrality requires combining them with direct reduced iron (DRI) plants, ideally powered by green hydrogen. This method, however, costs 30-60% more than conventional blast furnace production. The transition also requires substantial investment and taxpayer support, alongside the development of critical infrastructure like electrolysers for hydrogen production. The long-term viability of UK steelmaking may depend on adopting EAF technology, but primary steelmaking from raw materials will still be necessary globally due to insufficient scrap supplies to meet world demand.
