Project Overview

The Three Springs Open Access Energy Storage (OAES) is a major renewable infrastructure project to be located in the Shire of Three Springs, Western Australia. The project will deploy two systems to be operated sequentially: 1GW BASF energy storage system with a 10-hour discharge duration and a 1GW energy storage system with a 14-hour discharge duration providing a total of 14GWh of long-duration storage capacity using Energy Dome’s innovative CO₂-based technology. In aggregate the OAES will provide 1GW/24GWh of energy storage.

Strategically positioned to support Western Australia’s transition to a more resilient and renewable-powered grid, the Three Springs OAES will absorb excess energy from solar and wind farms and release it during times of peak demand or low renewable generation. This ensures consistent energy supply, reduces reliance on fossil fuels, and supports regional energy stability.

With a projected cost of A$3 billion, the Three Springs project is a cornerstone of Released Energy’s national storage rollout and represents a significant long-term investment in Western Australia’s energy future.

Key benefits include:

• • 1,000MW x 24hr capacity – enough to support hundreds of thousands of homes with dispatchable clean energy
  • BASF sodium-sulphur battery technology – fire safe, scalable, and cost-effective
  • Energy Dome CO₂ storage technology – cost-effective, modular, and globally scalable
  • Enhanced grid security – enabling deep renewable energy integration across the WA network
  • Local economic growth – through job creation, training, and contracting opportunities
  • Strategic location – supporting expansion of rooftop solar