Sweden’s nuclear revival risks being undermined as more companies pull the brakes on large power-hungry green projects designed to clean up some of the world’s dirtiest industries.

A policy U-turn that would entail a massive build-out of reactors, the first to come online in more than 40 years, now appears more unlikely as uncertainty grows over how much electricity the Nordic region’s biggest economy will actually need in the coming decades.

Tremendously costly and time consuming to build, the government’s plan has nuclear reactors becoming the main building blocks of the energy system way into the next century as everything from transport to heavy industries gets electrified. Makers of fossil-free steel, electric vehicle batteries, green hydrogen and potential marine fuel e-methanol would contribute to a large slice of the demand increase.