US: Sublime Cement has announced a 10% workforce reduction and a pause in the development of its planned demonstration plant in Holyoke, Massachusetts, after the company failed to reverse a decision to cancel a US$86m federal grant, which would have funded 50% of the project. The company had been awarded the grant by the Department of Energy’s Office of Clean Energy Demonstrations (OCED), but the Trump administration cancelled all grants in May 2025. Sublime said that the loss of the grant disrupted the company’s financing plans and forced it to explore alternative scale-up options.
The company said in a statement “We are actively working through a robust set of alternative scale-up plans and have several exciting options to bring our first commercial plant online.”
Earlier in 2025, Microsoft committed to purchasing 623,000t of Sublime’s low-carbon cement to reduce the embodied emissions of its construction projects. The Holyoke plant was to supply the product, with a planned output of over 30,000t/yr. Sublime said that it remains in discussions with the Department of Energy.
