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%.

“The elimination of solar energy’s intermittency and ensuring its 24-hour availability at grid-competitive cost is the holy grail and RayGen has found it”.

While headlines about energy storage in Australia have been dominated by news of batteries in large-scale utility projects and the residential sector, the country’s government and renewable energy agency have identified numerous possibilities for developing pumped hydro storage assets.