Made of cement, carbon black, and water, the device could provide cheap and scalable energy storage for renewable energy sources. Images for download on the MIT News office website are made available to non-commercial entities, press and the general public under a Creative Commons Attribution. . French energy major TotalEnergies has partnered with building solutions company Holcim to deploy a solar PV and battery storage project at the latter's cement plant in Colorado. Subsidiary NHOA Energy worked on the installation and has been promoting it this week. The battery storage works in conjunction with a 42MW waste heat recovery (WHR) unit, a 8MWp. . TotalEnergies SE (EPA:TTE) has struck an agreement to build and operate a 33-MW (direct current) ground-mounted solar farm with a 38. Germany's Fraunhofer Institute reports that this technology could reduce energy storage costs by 40% compared to conventional solutions. The science behind cement-based energy storage. .