IN Brief:
- Rivington Energy has sold a 50MW battery energy storage project at Yarnton in Oxfordshire to funds managed by Schroders Greencoat.
- The project has planning approval, export capacity of up to 49.9MW, import capacity of 40MW, and a near-term grid connection date.
- Construction is expected to begin in 2027, adding another connection-ready asset to the UK BESS pipeline.
Rivington Energy has sold its Yarnton battery energy storage system project in Oxfordshire to funds managed by Schroders Greencoat.
The 50MW project was developed by Renewable Connections, Rivington Energy’s development arm. The site received planning approval in June 2025 and is expected to begin construction in 2027. It will export up to 49.9MW and import up to 40MW, slightly below the 52MW capacity originally proposed during development.
Schroders Greencoat acquired the project through Wessex Gardens, a locally focused renewable infrastructure fund for Local Government Pension Scheme members. The site has a near-term grid connection date, giving it a stronger development position in a UK storage market where connection access has become one of the main determinants of asset value.
The Yarnton transaction sits within a market increasingly defined by project maturity. Planning consent is valuable, but it does not make a battery project investable on its own. Developers and investors also need clarity on connection timing, import and export capacity, network upgrade requirements, construction cost, optimiser strategy, route to market, and the risk profile of future revenue streams.
Connection-ready assets are attracting more attention as grid reform reshapes the project pipeline. Projects that can demonstrate progress, readiness, and a credible route to energisation are better placed than speculative schemes sitting in long queues. Reforms to connection processes are beginning to give developers clearer information on where and when projects can connect, but the market is still adjusting to new queue-management rules.
Investor interest in mature storage and solar-storage assets has also been visible in projects such as the Fair Oaks solar and BESS acquisition in Nottinghamshire. Fair Oaks combines 75.4MWp of solar PV with a 49.9MW / 99.8MWh battery system. Yarnton is a standalone BESS, but both projects show the premium attached to planning status, grid position, and development readiness.
The Oxfordshire project will provide flexibility by importing electricity when conditions support charging and exporting during periods of higher demand or stronger market value. Its exact operating role will depend on optimisation, market access, state-of-charge strategy, connection constraints, and participation in balancing or ancillary service markets. As with most GB battery projects, returns are likely to depend on a revenue stack rather than a single contracted income stream.
Storage assets at this scale involve more than battery containers. The project will require transformers, power conversion systems, protection, metering, fire safety design, thermal management, communications, control systems, site security, civil works, and compliance with planning and grid requirements. The quality of integration will determine availability, efficiency, safety, and long-term performance.
Fire safety and emergency planning remain central to BESS delivery. Local authorities, fire services, insurers, and communities increasingly expect clear evidence on battery chemistry, spacing, access routes, water management, detection systems, suppression strategy, and operating procedures. Consented projects still have to carry that safety case through procurement, construction, commissioning, and operation.
The sale also reflects the continuing role of institutional capital in UK storage. Pension-linked infrastructure funds are attracted to assets that provide exposure to energy transition infrastructure, but battery storage remains a more active and market-facing asset class than regulated networks or contracted renewables. Revenues are more volatile, operating strategy is more complex, and optimiser performance can materially affect returns.
Near-term connection access reduces some of that exposure by allowing a project to move into construction and operation sooner. Delayed assets face greater uncertainty over equipment costs, market rules, grid queue reform, planning conditions, and revenue assumptions. A battery with a credible route to energisation can be valued more clearly than one waiting for uncertain network capacity.
Yarnton adds another medium-scale asset to the UK BESS pipeline as storage moves from ancillary-service niche to mainstream grid infrastructure. Its construction timetable places it in the next wave of projects expected to support renewable integration, peak management, and system balancing as the GB power system carries higher volumes of variable generation.
