EarthEn uses hardware and software to enable clean and renewable energy 24/7. EarthEn develops thermo-mechanical, flexible, and future-proof long-duration energy storage that uses CO2 in a closed loop to potentially store 4 to over 100 hours of energy in a low-cost, highly scalable, and safe manner with a 30-year lifetime. EarthEn’s software tools leverage artificial intelligence and machine learning to optimize peak demand pricing, enable grid resiliency, and increase the grid’s cybersecurity.