CleanPeak Energy has partnered with Western Sydney International (Nancy-Bird Walton) Airport (WSI) to deliver 100% renewable electricity to Australia’s newest international airport.
CleanPeak Energy will invest over $50 million at the site to develop 9MWp of new rooftop solar and a 120MWh Battery Energy Storage System (BESS). Combined with WSI’s existing 4.5MWp rooftop solar system, CleanPeak will supply more than 18GWh of onsite renewable electricity annually to power the airport under a seven-year Electricity Supply Agreement (ESA).
Everything from baggage handling systems and terminal operations through to electric airside equipment, including pushback tractors, will be powered by renewable electricity.
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CleanPeak Energy will supply 100% of WSI’s electricity requirements from day one through a combination of onsite solar generation and storage, together with additional supply from CleanPeak’s growing fleet of solar farms. The company will also manage the airport’s embedded network distribution system.
CleanPeak Energy CEO Philip Graham said, “the project demonstrates how critical infrastructure can transition to renewable energy without compromising reliability or performance”.
“This project is about unlocking what’s possible when large-scale energy infrastructure is designed, financed and operated as an integrated energy system to power critical assets like airports without compromising performance,” Graham said.
“CleanPeak is enabling the airport to run on 100% renewable electricity by investing at the site to optimise local energy infrastructure as well as developing additional solar farms to deliver the scale of energy required to ensure the airport runs 24/7 with renewable electricity.”
CleanPeak commenced supplying renewable electricity to the airport on 1 May 2026.
When complete, the fully-integrated energy system operated by CleanPeak will incorporate:
- the existing 4.5MWp rooftop solar installation at the airport that will be leased, operated and maintained by CleanPeak;
- approximately 9MWp of additional solar generation to be delivered by CleanPeak, including a 4.95MWp system on the existing cargo terminal rooftop as well as a further 4MWp to be delivered on the 2nd Cargo terminal rooftop;
- a 30MW/120MWh Battery Energy Storage System (BESS), planned for delivery in 2027, to provide stability, resilience and peak demand management; and
- an embedded network enabling the efficient distribution and optimisation of electricity across the airport precinct to both WSI and various tenants within the precinct.
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As WSI’s electricity demand grows, CleanPeak will continue to add new build solar farms into its development portfolio across New South Wales, ensuring sufficient renewable generation is available to meet increasing electricity requirements at the site.
Once the airport is fully operational, expected demand at the site will be over 100GWh per annum which will be supplied by CleanPeak Energy from 100% renewable sources, both onsite and from our solar farm portfolio, avoiding approximately 64,000 tonnes of CO₂-e per annum.
