COI Energy solves a conundrum: Letting businesses sell unused electricity — catch it at TechCrunch Disrupt 2025

COI Energy, founded by SaLisa Berrien, addresses the inefficiency in how large enterprises with multi-building campuses purchase electricity. Unlike homeowners who pay for actual usage, these campuses buy a fixed monthly capacity based on peak demand, often leading to overpayment since peak usage is rare. Drawing on her 25 years of experience in energy engineering and motivated by her childhood struggles with electricity access, Berrien developed a patented technology that enables businesses to sell their unused electricity capacity. COI Energy’s platform installs an energy gateway at customer sites to measure and predict energy needs up to 90 days in advance, allowing enterprises to release and monetize surplus capacity through a marketplace. Currently in the pre-seed stage with $3.5 million raised, COI Energy is already generating revenue from five pilot customers across California, Florida, Massachusetts, and New York. The company’s hardware-agnostic system integrates with existing building and utility energy systems, making it widely adaptable. COI is also exploring international expansion