NWF Backs Nexeon for £100 Million as EDF Signs Two UK BESS Agreements
The NWF's £52.6 million Nexeon stake and EDF's two UK BESS optimisation agreements indicate storage capital moving into supply-chain materials as well as projects.
EDF signed agreements this week (week of 2026-08-31) with Trinasolar's International Solution Business Unit to optimise two UK battery storage projects, covering a combined 89.9MW of dispatchable capacity in Scotland and England. Three separate battery capital deals closed in the same seven days.3
The Ruby BESS site near Aberdeen comes first: 40MW/80MWh, due to reach commercial operation in October 2026. Chatterley, a 49.9MW/99.8MWh project in Gloucestershire, follows in March 2027. EDF commercial director of business and wholesale services Stuart Fenner said batteries were becoming "increasingly important to maintaining system stability" as renewable generation and electrification expand.3
Separately, the UK's National Wealth Fund committed £52.6 million in Nexeon's investment round, completing a total raise of £100 million. Nexeon makes next-generation battery materials, not operational storage. The NWF's participation shifts public capital upstream — away from project infrastructure and toward supply chain inputs that prior public backing programmes have not explicitly targeted.3
Metlen Energy moved on its UK storage plans in the same period, signing a balance of plant contract with Pulse Clean Energy for the 129MW Penn BESS in Wolverhampton. Penn carries an installed capacity of 362MWh, placing it among the larger single-site UK battery assets in the development pipeline.3
Ruby's October 2026 target provides a near-term test of whether the EDF-Trinasolar optimisation framework translates into dispatch revenue. Chatterley follows in March 2027. Signed contracts answer the counterparty question; performance does not arrive until commercial operation dates are reached.
In Australia, a comparable build-out is proceeding at greater scale. The Australian Energy Market Operator's Electricity Statement of Opportunities, published on 2026-08-24, described a record pipeline of new generation and storage as putting the National Electricity Market on a stronger path to reliability through the coal retirement cycle.2
The numbers underpinning that assessment trace to the federal government's Capacity Investment Scheme Tender 7, results released earlier in 2026. Nineteen projects received support, delivering a combined 7.8 GW of renewable generation across New South Wales, Victoria, Queensland, South Australia and Tasmania — well above the 5 GW indicative target set at tender launch. Eight of those projects incorporated storage, adding more than 2.0 GW and 7.9 GWh of battery capacity to the grid.1
Solar hybrids dominated the awarded slate. Acen's Australian arm is building the Birriwa 600MW solar farm alongside 2,400MWh of storage. Lightsource bp secured backing for its 320MW Gundary solar project. In New South Wales, Malaysia-owned Spark Renewables won CIS support for the 300MW Dinawan solar and 1,200MWh battery project and the 180MW Wattle Creek solar farm paired with 720MWh of storage.1
In Queensland, Grupo Cobra's Zero-E subsidiary is advancing the 171MW Moranbah solar and 100MWh battery alongside the 290MW Gunning solar and 542MWh battery. Almost 2.5 GW of total CIS Tender 7 generation will come from solar projects, according to the government's tender outcome.1
Both markets are drawing on public funding to mobilize battery storage at a pace private capital alone has not sustained. In Australia, the CIS provides the contract-for-difference mechanism enabling developers to build. In the UK, the NWF is now putting money into the materials layer. Penn and Chatterley have not yet disclosed their cell chemistry procurement timelines, leaving the NWF's £52.6 million Nexeon commitment sitting ahead of confirmed downstream demand from the projects it is meant to serve.3