PORTLAND, OR-- Jul 26, 2016) - ESS Inc., the leading manufacturer of a safe, low-cost and long cycle-life battery for renewable energy storage, celebrated a highly successful presence at Intersolar 2016 in San Francisco this month, boosted by strong interest in the company's Iron Flow Battery technology, a steady flow of booth visitors, and an overflow of participants for the site tour at Stone Edge Farm in Sonoma. More than 100 Intersolar attendees took part in a tour of Stone Edge Farm's advanced microgrid -- four times the expected number. The tour's popularity was a reflection of the growing interest in the benefits of energy storage, especially in support of integrating renewables to provide grid services, lowering electricity costs and reducing CO2 emissions. At Stone Edge, ESS's Iron Flow Battery is well suited to provide long-duration storage capacity to supply power at night, for irrigation or hydrogen generation, and during the day to smooth out the intermittencies of solar PV.