CATL partners with Alfen and Solarpro to deploy up to 7 GWh of sodium-ion battery storage across Europe in a dual clean-energy push
CATL (Contemporary Amperex Technology Co., Limited, the world's largest battery manufacturer) has announced two separate European partnerships on 25 July 2026 that together target up to 7 GWh (gigawatt-hours) of sodium-ion battery energy storage deployment across the continent. In the first agreement, CATL and Alfen N.V., a Dutch energy solutions company, will collaborate to deploy 5 GWh of CATL's sodium-ion storage systems across Europe, extending a supply partnership that began in 2023 and expanded in 2024. In the second, CATL and Solarpro Technology AD (Solarpro) signed a strategic cooperation agreement for 2 GWh of sodium-ion systems targeting Central and Eastern Europe, with the stated aim of commissioning the first sodium-ion energy storage project in that sub-region. Sodium-ion batteries (which store energy using sodium rather than lithium, offering lower-cost and better cold-temperature performance) represent a diversification away from traditional lithium-ion supply chains, a point both announcements emphasise. For energy lawyers, these agreements raise technology transfer, cross-border supply contract, and grid connection structuring questions as European markets prepare to absorb next-generation storage at scale. The timing is consistent with accelerating EU energy transition targets and the need for grid-scale storage to balance increasing renewable generation capacity.
Why this matters
Two simultaneous 25 July CATL partnership announcements targeting a combined 7 GWh of European storage capacity signal that sodium-ion technology is moving from pilot to commercial-scale deployment faster than many grid planners anticipated. For energy lawyers, the cross-border nature of both deals, one with a Dutch listed company and one with a Bulgarian technology firm, raises questions around EU state aid rules for storage projects, grid connection agreement terms in multiple member states, and the structuring of long-term technology supply contracts where the underlying chemistry is still maturing. The strategic shift away from lithium-ion also has supply chain and force majeure implications for existing energy storage contracts that lawyers advising project developers and utilities should be reviewing.
On the Ground
On matters of this type, a trainee would be reviewing technology transfer agreement terms and flagging IP ownership provisions, preparing a summary of grid connection agreement requirements in the relevant member state jurisdictions, and coordinating due diligence on the IP portfolios underlying the sodium-ion technology being licensed.
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“What are the key legal risks in a cross-border energy storage supply agreement where the core technology is provided by a non-EU manufacturer, and how would you structure protections for the European project developer?”
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