The NZ Battery Project was set up in 2020 to explore possible renewable energy storage solutions for when our hydro lakes run low for long periods. A pumped hydro scheme at Lake Onslow was one of the options being explored. The NZ Battery Project was set up in 2020 to explore possible renewable energy storage solutions for when our hydro lakes run low for long periods. A pumped hydro scheme at Lake Onslow was one of the options being explored. The Government stopped the Lake Onslow investigations in late 2023.
[pdf] The world’s highest energy density grid-scale battery storage system is housed in a standard 20-foot container. Shanghai-based Envision Energy unveiled its newest large-scale energy storage system (ESS), which has an energy density of 541 kWh/㎡, making it currently the highest in the industry.
[pdf] Lithium-sulfur (Li-S) batteries are emerging as a next-generation energy storage solution due to their high theoretical energy density (up to 2,600 Wh/kg) and potential cost advantages over lithium-ion batteries.
[pdf] 
