Holcim has invested in 44.01, a startup that turns captured CO2 into solid rock by injecting it into ultramafic rock formations. The two companies already run a pilot at Holcim's cement plant in Fujairah, UAE, where CO2 is captured and stored underground. Holcim says the approach could matter for cement plants that cannot easily connect to offshore storage networks. Neither the investment amount nor Holcim's ownership stake was disclosed, so the near-term earnings effect is unclear. The deal adds a long-term option on carbon storage infrastructure rather than a known revenue stream. 44.01's other backers include JERA, Breakthrough Energy Ventures, Equinor Ventures, and Air Liquide Venture Capital.
