London – 27 August 2025. Eelpower Limited is joining a new consortium, comprising Equitix, Aware Super (the Australian pension fund), and the UK’s National Wealth Fund (NWF) to invest £500 million into a new UK battery storage platform. The platform – to be known as Eelpower Energy – will build, own, and operate grid-scale battery storage assets and aims to deliver over 1GW of new battery storage capacity for the UK grid in the coming years.
Eelpower Limited will hold a small minority stake in the new platform. Its management team, led by Mark Simon (CEO), has transferred across to Eelpower Energy and will immediately begin constructing 300MWh of battery storage capacity across three projects, with plans to reach Final Investment Decisions on up to 1GWh of capacity by the end of 2025.
Chancellor of the Exchequer Rachel Reeves said: “Upgrading the grid will help to bring down bills, support well paid jobs, and put more money in working people’s pockets. This is our Plan for Change in action, delivering long term economic growth and the jobs of the future through investing alongside the private sector, like this dealwith one of Australia’s largest funds, showing that the UK is one of the best places in the world to invest.”
Mark Simon, CEO of Eelpower Energy, said: “Battery storage is key to enabling the growth of abundant, low-cost renewable energy and without this technology the energy transition cannot succeed. Given the track record of the Eelpower team in this sector I am confident that Eelpower Energy, supported by the powerful consortium of investors led by Equitix, will accelerate the rollout of flexible energy storage assets across the country that are so critical to delivering the UK’s decarbonisation goals.”
Equitix – a leading investor, developer and manager of infrastructure assets – led the consortium, partnering with Aware Super to invest into Eelpower Energy. This partnership, in a sector crucial for the UK’s transition to net zero, also marks the latest collaboration between NWF and Equitix and cements a growing relationship with Aware Super as a key UK infrastructure investor.
Hugh Crossley, CEO of Equitix, said: “We’re proud to unite this experienced investor consortium behind Eelpower Energy, a platform with a proven track record in delivering grid-scale battery storage. This significant investment reflects our shared confidence in the long-term value of the sector, and our consortium brings deep expertise in infrastructure investment, a proven ability to deliver complex energy projects, and a strong focus on generating stable, long-term returns for investors. Equitix is committed to ensuring that our investments deliver meaningful local impact and contribute to the UK’s sustainability goals through cleaner, more resilient energy infrastructure.”
Aware Super, one of Australia’s largest superannuation funds, with c.A$200 billion in AUM and 1.2 million members, is a long-term active infrastructure investor with an appetite for large-scale infrastructure assets that provide long-term returns that match its members’ retirement time horizon.
Aware Super Deputy CIO and Head of International Damien Webb said: “Aware Super is proud to be a substantial direct investor in Eelpower Energy, reinforcing our commitment to the UK energy transition and industrial strategy. We are excited by our partnership with local institutions, Equitix and the National Wealth Fund, and look forward to generating attractive returns for our 1.2 million members. This new platform will build on our existing UK and European infrastructure portfolio – that includes Forth Ports and EuNetworks – and demonstrates our confidence in the battery storage sector’s role in delivering cleaner, more resilient energy systems.”
The National Wealth Fund, the government’s principal investor and policy bank, is committing up to £200 million into the platform. NWF operates as a strategic investor, aiming to crowd in private capital by taking cornerstone positions in commercially viable projects in support of the Government’s growth and clean energy missions.
Ian Brown, Interim CEO of National Wealth Fund, said: “Battery storage technology is crucial for the successful integration of renewables into the UK energy system and is therefore a priority area for the NWF. Our investment in Eelpower Energy is yet another example of how we’re supporting more storage capacity to come online at pace and scale to help meet the government’s clean power targets.”
Energy Minister Michael Shanks said: “This National Wealth Fund investment shows that we are serious about developing and backing battery storage to unlock Britain’s renewable potential. Every battery storage facility we build will help protect homes and businesses from future energy price shocks and will support our Clean Power 2030 mission that will scale up renewable projects alongside battery storage across Great Britain, so excess renewable energy can be stored to use later, instead of wasted.”
Eelpower Ltd was advised by Guy Strocken and the team at Etara (corporate finance), Gareth Baker and Gowling WLG LLP (legal), Burges Salmon (legal / asset acquisition M&A), Jamiesons (management) and Alvarez & Marsal (tax).
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About Eelpower
Eelpower was established in 2017 and is a pioneer in the grid-scale battery market. As a lean and effective constructor-owner-operator, it led the creation of one of the largest operating portfolios in the GB electricity storage market, working with the NextEnergy Solar Fund and SUSI Partners, the Swiss infrastructure fund manager. Eelpower’s earlier commercial agreements are unaffected by the formation of Eelpower Energy.
About Equitix
Established in 2007, Equitix is a leading European mid-market infrastructure fund manager with $15 billion under management. Equitix has invested in more than 300 assets in 24 countries across diversified sectors including renewables, transmission and distribution, social infrastructure, transportation infrastructure, environmental services, and digital infrastructure. Equitix is helping to support the UK’s drive for sustainability and energy security, with social and environmental objectives embedded into a diverse portfolio of assets that strengthen regional, national, and international connections.
Media enquiries: teneo@equitix.com
About Aware Super
Aware Super is one of Australia’s top-performing and largest industry super funds with a core objective of delivering the strongest risk-adjusted returns for its 1.2 million members. Our Australian and London-based investment teams currently originate and manage A$200 billion AUM on behalf of our members. As one of the top global institutional investors, we typically take an active management approach across alternative assets, including infrastructure, real estate and private equity, and additionally allocate to liquid markets. Returns for our c.A$22 billion infrastructure portfolio are driven by a globally-diversified program which captures global trends in demography, sustainability and technology to achieve a broad universe of assets. It has a targeted focus on opportunities in UK, Europe, North America, Australia and Asia with a sector focus on energy transition and digital opportunities.
About the National Wealth Fund
The National Wealth Fund (NWF) is an investor, operating as a bank, to drive investment into the UK’s clean energy and growth industries in support of government policy. The NWF aims to mobilise private capital around the government’s strategic priorities, including delivery of the industrial strategy. The NWF is based in Leeds and has £27.8bn of finance to deploy across the capital structure, including loans, equity investments and guarantees. The NWF also provides commercial and financial advisory services and market leading lending to local authorities across the UK. The Fund is wholly owned by HM Treasury but is operationally independent from government.
