Inside the Coleambally BESS: four hours of firmed power for the NEM
A deep dive into Risen Energy Australia’s flagship 100 MW / 400 MWh battery — co-located with Transgrid’s substation and engineered for a 30-year life.
Australia’s National Electricity Market is transforming: renewables supply a growing share of generation, and grid-scale storage has become indispensable for shifting solar energy into the evening peak. Risen Energy Australia’s flagship Coleambally BESS is built for exactly that job.
The system. 100 MW of discharge capacity and 400 MWh of storage — four hours of continuous output, time-shifting midday solar into evening demand. The lithium-ion cells are manufactured by Risen Battery, selected for cycle life and thermal stability, and the installation is engineered for a 30-year operational life with provisions for future capacity expansion.
The site. Approximately 9 km northeast of Coleambally in NSW, directly adjacent to Transgrid’s existing substation and just 120 m from a 150 MW agrisolar farm — co-location that integrates generation, storage and transmission.
Grid services. Beyond energy time-shifting, the BESS will provide frequency regulation, fast-response contingency reserves and voltage support — services that keep the NEM stable as renewable penetration rises.
In May 2025 the project received its 5.3.4 letter, confirming compliance with grid performance standards and clearing the path to construction.
Originally published on risenenergy.com.au, 9 July 2025.