Acorn Energy, Inc., through its subsidiaries, develops and markets wireless remote monitoring and control systems for various markets in the United States and internationally. It operates through two segments, Power Generation (PG) Monitoring and Cathodic Protection (CP) Monitoring. The PG segment provides wireless remote monitoring and control systems, and services for critical assets, which include stand-by power generators, compressors, pumps, pumpjacks, light towers, turbines, and other industrial equipment; and Internet of Things applications. The CP segment offers remote monitoring of cathodic protection systems on gas pipelines for gas utilities and pipeline companies. The company was incorporated in 1986 and is based in Wilmington, Delaware.