Residential energy storage system provider Eguana will begin deploying devices to operate as a connected virtual power plant on the Hawaiian island of Oahu.

Approval has been granted — with significant conditions attached — for a large-scale standalone battery storage project designed to help the Hawaiian island of Oahu overcome energy reliability and supply concerns as a coal power plant retires.

Construction of two large-scale solar-plus-storage projects has begun on the Hawaiian island of O’ahu, totalling 76MW of solar PV and 300MWh of battery storage, by Clearway Energy Group.

As society moves away from centralised fossil fuel generators to increasing shares of distributed renewable energy resources, the idea that customers’ homes could become host to virtual power plants (VPPs), joining the dots between electricity supply and demand across the grid, has gradually gathered traction. Andy Colthorpe speaks with Suleman Khan CEO of Swell Energy, which has raised nearly half a billion dollars in financing for solar-plus-storage VPPs in 14,000 homes across California, New York and Hawaii.

There has been growing uptake in battery energy storage in Midwestern US states that have traditionally depended on burning coal for electricity, with some “very big projects planned,” an analyst has said.

Solar-plus-storage systems at customers’ homes in Hawaii will create a “comprehensive” virtual power plant (VPP) network on three Hawaiian islands of up to 6,000 individual systems.

Energy company Total and solar-plus-storage developer 174 Global, a division of Hanwha Group, have formed a joint venture to develop utility-scale solar and storage projects with a total capacity of 1.6GW in the US.

A large-scale solar PV system paired with pumped hydro energy storage could cover as much as 25% of the Hawaiian island of Kaua’i’s energy demand, pushing the island’s total share of renewables in its energy mix past 80%.

Hawaiian Electric has submitted eight contracts representing nearly 300MW of solar energy generation and about 2,000MWh of energy storage to be built on the islands of O’ahu and Maui.

EDF, Hanwha and Innergex lie among the firms contracted at Hawaii’s supposedly largest renewable tender to date, joining already-known winners such as ENGIE.