He sees Fluence focusing on Puerto Rico and the Dominican Republic, two places where AES already has a strong presence. In addition to offering energy storage for microgrids, Fluence is going big – very big – in utility-scale storage. The company is supplying what it describes as the world's largest lithium-ion battery, a 100 MW/400 MWh (4-hour duration) for Southern California Edison and the Western Los Angeles area. Based in Arlington, Virginia, Fluence now has a staff of about 100 people and plans to add more employees this year. On the sales side, Siemens global sales force will market and sell Fluence energy storage systems, including Siestorage, Advancion, and the newest Fluence platform, SunFlex Energy Storage for solar photovoltaics.