Sebastian Montoya
Enagás kept the European gas landscape busy this week.
The Spanish TSO completed its EURm 573 acquisition of a 31.5% stake in France’s Teréga from Singapore’s GIC, becoming the operator’s second-largest shareholder behind Snam.
The deal ties gas networks in Spain and France more closely together via the Irún and Larrau interconnections, and deepens cooperation on the H2med hydrogen corridor between the two countries – one of several cross-border consolidation moves this week, alongside Qualitas Energy’s agreement to acquire Macquarie’s 5.8 GW Cero Generation platform spanning the UK, Italy and Spain.
A strategic move with long legs, literally spanning the Pyrenees.
And in other news this week:
- BW ESS expanded its Spanish storage footprint, acquiring two Valencia BESS projects totalling up to 675 MWh from developer Navacant.
- Eelpower Energy acquires the 50 MW/200 MWh Silkstead storage project (BESS). Silkstead is Eelpower’s fifth asset acquisition since the platform launched in September 2025.
- French utility Engie SA has acquired a 66-MW/264-MWh battery energy storage system (BESS) project in southern Spain.
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Weekly summary | From September 2-9, 2026
The tracker logged 16 announced deals across Europe this week, and once again the story wasn’t the count, but where the capital landed.
Qualitas Energy alone set 5.8 GW in motion, taking over Macquarie’s Cero Generation platform spanning solar and BESS assets across the UK, Italy and Spain, making it the single largest portfolio to change hands this week.
Battery storage led with four deals, biomethane followed with two, and Spain topped the list with five transactions.
This week’s signature move was consolidation at the grid level: strategic investors tightening their grip on transmission and storage infrastructure rather than chasing new-build.
Enagás moved into Teréga’s shareholder base with a 31.5% stake bought from Singapore’s GIC, while Amancio Ortega exited his position in Portugal’s REN to state-owned Parpública.
Crédit Agricole, meanwhile, agreed to take 50% of power firm Primeo Energie France from Qair and the Primeo Energie group.
Biomethane had its own quiet moment too. Rienergy ESCo sold five plants under development to a Spanish renewables investor, while Elevion Group picked up a new cluster in Alessandria from entrepreneur Anna Ventorino.
Disclosed figures, however, stayed scarce this week. Enagás’s EURm 573 purchase of the Teréga stake and Alantra’s EURm 120 acquisition of a Shell-owned investee portfolio were the only disclosed numbers.
Battery storage kept its rhythm regardless: Engie picked up a 66 MW/264 MWh standalone asset in Tarifa, Eelpower Energy acquired the 50 MW/200 MWh Silkstead project near Winchester, and BW ESS added 126 MW/up to 675 MWh across two Valencia projects from developer Navacant.
Elsewhere, Foresight took on the Blackhillock synchronous condenser in Scotland, Vattenfall completed its purchase of Sweden’s Nima Energy, Berliner Stadtwerke acquired the Diehlo-West wind farm from JUWI.
BESS
- Spain | French utility Engie SA has acquired a 66-MW/264-MWh battery energy storage system (BESS) project in southern Spain.
- UK | Eelpower Energy acquires the 50 MW/200 MWh Silkstead storage project (BESS). Silkstead is Eelpower’s fifth asset acquisition since the platform launched in September 2025.
- Spain | BW ESS buys battery storage projects totaling up to 675 MWh. The two projects, of 99 MW and 27 MW respectively, are located in the Valencia region.
Bio-fuels
- Italy | Rienergy ESCo sells five biomethane plants. The transaction comprises a portfolio of projects developed by the target companies under the coordination of Rienergy ESCo.
- Italy | Elevion Group acquires a new set of biomethane plants in the province of Alessandria, Italy. The European group adds another 5 million standard cubic meters of annual capacity to its portfolio.
Grid Network
- Portugal | Pontegadea Inversiones, the investment company of Amancio Ortega, founder of Zara, concluded this Monday the sale of its 13.7% stake in REN to Parpública.
- France | French banking group Credit Agricole’s energy transition arm has agreed to acquire a 50% stake in electricity supplier and renewable energy aggregator Primeo Energie France from Qair and Switzerland’s Primeo Energie Group.
- UK | Foresight acquires the Blackhillock synchronous condenser. A fund managed by Foresight Group has completed the acquisition of a 100% shareholding of the Blackhillock Synchronous Condenser.
- France | French state-owned electric utility EDF is in talks to acquire electricity supplier So Energy, which is majority owned by Irish company ESB.
Solar + Wind
- Sweden | Eurowind Energy has completed its acquisition of EnBW’s Swedish platform. The acquisition marks a significant expansion of Eurowind Energy’s activities and underlines the company’s long-term commitment to the Swedish market.
- Serbia | The state-owned power company Elektroprivreda Srbije is seeking to acquire or co-develop renewable energy projects, following the example of other regional companies.
- Spain | London-based private equity firm Copilot Capital buys majority in Green Eagle Solutions, a Spanish company that provides software for automating renewable energy operations.
