Tata Steel worker Barrie Evans blames the eco drive for thousands of job losses at the company.
Speaking to GB News's Liam Halligan, he said he "understands" concerns which have triggered the push for green, but argued that it should be "done over decades, not months".
It comes as steelworkers were “angry and frustrated” after Tata confirmed plans to close blast furnaces at its biggest UK plant, with the loss of up to 2,800 jobs, sparking warnings of industrial action.
Opposition parties criticised the Government for not doing enough to save the British steel industry, while environmental campaigners said a lack of a forward thinking industrial strategy had left workers “high and dry”.
About 2,500 jobs could be lost in the next 18 months at the Port Talbot plant in South Wales, as Tata presses ahead with making steel more environmentally friendly, which needs a smaller workforce.