The off, micro and edge-of-grid applications for medium and large-scale battery storage market continues to grow. The latest announcement from the sector comes courtesy of Pittsburgh headquartered Aquion Energy in the form of a 1 MWh storage solution in Hawaii.
The battery system will store on-site solar electricity and will allow the Bakken Hale residential estate to operate entirely free from utility grids.
The microgrid system is being developed by Renewable Energy Services, which will couple the 1 MWh Aquion battery with a 176 kW solar array. A propane-fueled generator will provide emergency backup power.
The Aquion battery system will charge on an eight-hour cycle during daylight hours, with a 16-hour discharge cycle. Aquion says its aqueous hybrid ion technology is well suited for such long-duration charge and discharge cycles.
"The Bakken Hale project is the first of several very large microgrid projects we plan to supply using our M-Line Battery Modules, said Scott Pearson, Aquion CEO. We look forward to working with RES to install this system and showcase our capabilities to the Hawaiian market." The estate owner, Medtronic, indicated that the PV-plus-storage array will help the residential community to reduce its fossil fuel usage by 97%.
"I want to demonstrate that using a solar and battery-powered microgrid is our best solution now, said Earl Bakken, founder of Medtronic. This installation will enable us to meet our around-the-clock power needs with solar generation.
Aquion reports that its manufacturing operations, based in Mt. Pleasant, Pennsylvania, has the capacity to produce 200 MWh annually. It aims to expand that capacity to 1 GWh.