An employee of Dirostahl, a medium-size forging steel firm that produces large, forged parts, works on a glowing steel element that has been heated in a classic natural gas-fired furnace to 1,200 degrees Celsius in Remscheid, Germany, June 30, 2025. The company wanted to switch from gas to green hydrogen but ditched plans citing high costs and logistic challenges. REUTERS/Thilo Schmuelgen