Advanced Rail Energy Storage (ARES) has developed a grid-scale energy storage technology using the power of gravity similar to pumped hydro power without the use of water—green energy storage for green energy. Ares technology is less expensive than pumped hydro-power and easier to permit. It supports renewables integration, grid-scale energy storage and grid support ancillary services. The technology is scalable from 50-300 MW. ARES has patented its technology in the U.S. and has patents pending in 53 countries.