satisfy energy demands at medium industrial scale. It is fully operational, installed in sea vessels e.g. 40 feet container ship, or on land installations e.g. near a wind turbine with a 7,5MW power. ABBY-MEGA store the electrical energy on availability, and deliver full load at immediate demand e.g. supply of 22.5MWh at the 3 hours period of grid load. Thus ABBY-MEGA is a realistic and price competitive solution for grid stabilization.