BlackRock-backed Akaysha Energy has entered into a strategic joint development agreement with Copenhagen Energy to advance “mega-scale” battery energy storage projects in Germany.
The partnership aims to combine Akaysha Energy’s track record in delivering large-scale battery storage systems with Copenhagen Energy’s technology-led development capabilities, power trading expertise and established market presence across Europe.
According to the two companies, the collaboration will accelerate the deployment of flexible energy storage capacity to support Germany’s energy transition as renewable energy penetration continues to grow across the country’s grid infrastructure.
The Australian developer’s current development pipeline exceeds 30GWh across Australia, Japan and the US.
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A panel of expert speakers discussed opportunities in Germany, regarded as Europe’s largest energy market, at the Energy Storage Summit 2026 in London in February. You can watch the full video on ESN Premium.
International expansion supported by corporate debt facility
Akaysha Energy’s German market entry follows the company’s September 2025 announcement that it had secured an AU$300 million (US$214 million) corporate debt facility, specifically structured to support its expansion into international markets, including the US, Japan, and Germany.
The debt facility provides the developer with flexible capital to advance projects through development stages and toward financial close across multiple jurisdictions simultaneously.
It should also be noted that Akaysha has been the subject of market speculation this year regarding its capital structure and growth financing.
Reports emerged earlier this year that the developer was considering options to raise several hundred million dollars, potentially through the sale of a minority stake, based on a valuation exceeding US$1 billion.
At the time, Energy-Storage.news approached Akaysha Energy regarding the reports; however, the company declined to comment.
Meanwhile, Copenhagen Energy brings complementary capabilities to the partnership, particularly in power trading and market optimisation, which have become increasingly important as battery storage projects transition from primarily providing ancillary services to participating in energy arbitrage and capacity markets.
While specific project locations, capacities and timelines have not been disclosed, the scale of the pipeline suggests multiple large-scale facilities distributed across Germany’s grid infrastructure.
Akaysha Energy’s utility-scale battery storage portfolio
Akaysha Energy’s flagship project, the 850MW Waratah Super Battery near Sydney, New South Wales, established the company’s reputation for delivering projects at the frontier of grid-scale storage capability.
As readers of Energy-Storage.news will be aware, the facility achieved its first full output to Australia’s National Electricity Market (NEM) in October 2025, which at the time was recognised as one of the world’s most powerful grid-supporting batteries in terms of instantaneous power delivery.
However, a catastrophic transformer failure raised concerns around the project before it entered a planned balance of plant shutdown from 20 November to 2 December.
Beyond Waratah, the developer also began operating the first phase of its 155MW/298MWh Ulinda Park battery storage system in Queensland in December last year. Once fully completed, Ulinda Park will reach 350MW/1,078MWh.
At the start of the year, Akaysha Energy switched on its 205MW/410MWh grid-forming Brendale BESS in Queensland, with the site having been added to the Australian Energy Market Operator’s Market Management System (MMS) in the third quarter of last year.
Additional significant projects under development in Australia include the 311MW/1,244MWh Elaine battery storage system in Victoria and the 415MW/1,660MWh Orana battery storage system in New South Wales.
