CleanPeak Energy Acquires 27 Solar and Battery Projects to Expand Portfolio
A renewable energy developer based in Sydney, supported by a major investment firm from New York, has finalised a deal to acquire a portfolio consisting of 27 solar and battery projects. This move is aimed at enhancing their supply of “cost-effective and dependable” energy for businesses looking to reduce their carbon footprint.
On Thursday, CleanPeak Energy announced it has reached an agreement to purchase 100% of Sustainable Energy Infrastructure (SEI), which ranks among Australia’s foremost owners and developers of solar and battery assets under 5 megawatts (MW).
About Sustainable Energy Infrastructure
SEI, overseen by Patrizia, a global investment manager focused on real assets, is renowned for developing “distributed” energy solutions, which tend to have less stringent connection requirements compared to larger facilities.
Currently, the Adelaide-based firm operates a total of 71 MWac of solar power capacity across 16 sites, as well as 42 MW of battery energy storage systems (BESS) distributed over 11 locations in New South Wales, Victoria, and South Australia, which include three hybrid solar and storage projects.
CleanPeak’s Growth Strategy
Established in 2017 by former Citi banker Philip Graham, CleanPeak focuses on acquiring and developing solar and battery assets to cater to the energy demands of corporate clients. This initiative received a significant endorsement from KKR, the US equity giant, last July, when they provided $550 million backing.
Earlier in 2025, CleanPeak also purchased the Australian solar asset portfolio from Dutch renewables investor Photon Energy, which comprised 15 MW of operating solar farms as well as an 8.2 MW, 10.9 MWh solar battery hybrid facility currently in development—all situated in New South Wales.
Future Prospects
The acquisition of SEI is set to enhance CleanPeak’s solar portfolio in line with its growth strategy for the next three to five years. The broadened geographical presence of its assets is likely to fuel the expansion of CleanPeak’s retail operations.
In a statement on Thursday, Graham expressed enthusiasm about integrating SEI into their platform, noting that it would not only extend their national reach but also strengthen their capacity to supply affordable and reliable renewable energy to customers.
He added, “This acquisition positions us to accelerate the growth of our retail business while continuing to lead in the development of distributed energy solutions. We’re excited to build on SEI’s strong foundations and unlock the next phase of growth together.”
