Environment, Energy & Green Transition

Environment, Energy & Green Transition

Castrén & Snellman is recognised as a leader for energy and infrastructure work in Finland. Its strength is apparent across the board.

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We advise our clients in environmental and energy law as well as in green transition projects. 

We handle your project’s permitting and appeal processes on your behalf. Drawing on our strong industry knowledge, our experts will help you in developing green transition projects and drafting related contracts. We support you in all legal issues in the energy market.

We manage the ever-changing regulatory landscape of environmental and energy law on your behalf. We monitor EU regulatory developments to anticipate regulatory changes affecting your business. We act as your strategic speaking partner in project development and on environmental and energy law issues.

The green transition is gathering pace and creating significant new business and growth opportunities for businesses. As an adviser in environmental and energy law, we help clients in identifying and seizing the opportunities presented by the energy transition.

Latest references

Neoen – Sale of data centre
We advised Neoen Renewables Finland Oy, part of the French Neoen Group, in its sale of a data centre project to a consortium consisting of international data centre developers and operators. This marked Neoen’s first data centre development project in Finland. Founded in 2008, Neoen is one of the world’s leading independent renewable energy producers. The company operates in 15 countries. It develops, finances, builds, owns, and operates solar power plants, wind farms, and battery storage systems. Neoen Group is owned by global alternative asset manager Brookfield Corporation.
Case published 17.9.2026
Lenders and Export Credit Agencies – EUR 514.4 million green project financing for Easpring Finland New Materials’ CAM plant
We acted as Finnish law legal adviser to the lenders and the export credit agencies in connection with the EUR 514.4 million green project financing for the development and construction of Easpring Finland New Materials Oy’s cathode active material (CAM) manufacturing plant in Kotka, Finland. The borrower, Easpring Finland New Materials Oy, is a joint venture owned by Beijing Easpring Material Technology, Finnish Minerals Group and LG Energy Solution. The financing was provided by six international commercial banks, with Société Générale acting as financial adviser and mandated lead arranger together with Natixis as co-mandated lead arranger, and DNB, ICBC, ING and Standard Chartered participating as lenders, with support from the export credit agencies Finnvera and Sinosure. The project represents a significant milestone for Finland and the European battery value chain by strengthening Europe’s domestic supply of cathode active materials, a key component in lithium-ion batteries for electric vehicles and energy storage applications. Once the first phase of the project is operational, the Kotka facility is expected to produce approximately 60,000 tonnes of cathode active material annually, making it one of the largest CAM production plants in Europe and supplying leading battery manufacturers across Europe. 
Case published 21.7.2026
Delta Capacity – Acquisition of BESS Project
We acted as Finnish legal advisor to Delta Capacity in connection with its acquisition of the ready-to-build Karppio battery energy storage system (BESS) project from Helios Nordic Energy. The acquisition was made and the project will be implemented together with Strioga Family Foundation. The Karppio BESS project is located in Teuva, Finland, and has a capacity of 125 MW / 300 MWh. Delta Capacity will lead the remaining development of the project through to commissioning, planned for 2027, and will serve as long-term asset manager. Delta Capacity is a Swiss-based developer of utility scale battery storage systems. The acquisition adds to Delta Capacity’s growing Nordic portfolio. 
Case published 20.7.2026
Winda Energy – Data centre project in Janakkala
We advise Winda Energy Oy on the development of its c. 100 MW data centre project in Janakkala, Finland, a landmark investment exceeding EUR 500 million. The project is being developed in collaboration with European investment company Gi21 Capital. Construction is scheduled to commence in 2027, with completion targeted for 2028. Winda Energy Oy is a renewable energy project development company established in 2011, with a portfolio of wind and solar power projects across Finland. The company manages projects throughout their full lifecycle, from initial planning and permitting to construction and completion. 
Case published 8.7.2026
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Latest insights

Article published 24.9.2026 – Environment, Energy & Green Transition Electricity Market Act: Proposed priority procedure to significantly change new electricity network connections in situations of scarce capacity
Marius af Schultén
Kanerva Sunila
Samuli Tarkiainen
Jonas Holm
Noora Ahonen

Marius af Schultén, Kanerva Sunila, Samuli Tarkiainen, Jonas Holm & Noora Ahonen

 Article published 8.5.2026 – Environment, Energy & Green Transition Reform of Finland’s land use legislation – key takeaways for project developers
Tarja Pirinen
Marius af Schultén
Joel Aartolahti

Tarja Pirinen, Marius af Schultén & Joel Aartolahti

 Article published 2.3.2026 – Environment, Energy & Green Transition Energy security is a matter of investment and competitiveness
Samuli Tarkiainen
Marius af Schultén

Samuli Tarkiainen & Marius af Schultén

 Article published 6.2.2026 – Tax & Structuring Electricity sector Profit Tax Act in conflict with EU law – SAC denied leave to appeal
Janne Juusela
Mikko Alakare

Janne Juusela & Mikko Alakare
Insights