Environment, Energy & Green Transition(en) Archives - Castrén & Snellman

Parliament approves substantial increases in tax on mined minerals

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

Rabobank – Financing arrangement for Olana Energy

Castrén & Snellman acted as legal advisor to Coöperatieve Rabobank U.A. in its capacity as sole lender and hedging bank providing senior financing to Olana Energy for a Battery Energy Storage Systems (BESS) portfolio in Finland. Our advice included preparing a legal due diligence report on the projects as well as advising on the negotiation of the various finance and project agreements. Olana Energy is a management-owned fast-growing independent power producer with an international pipeline of over 1 GW. The diversified portfolio of assets ranging from 5 to 30 MW reinforces the Finnish grid at a granular level.

Suomen Aurinkovoima – Financing arrangement to build solar parks

Castrén & Snellman acted as legal advisor to Suomen Aurinkovoima Oy and its owners in a financing tender process and a financing arrangement implemented with Danske Bank to secure financing for the company’s future solar park projects. Suomen Aurinkovoima, established by Oulun Seudun Sähkö, Oulun Energia, Vantaan Energia and Savon Voima, is a company focused on increasing domestic solar power. The company manages solar park projects from planning to implementation and maintenance, and its goal is to build dozens of new solar parks across Finland by 2030.

Merger of Oomi and Lumme Energia

We are acting as the joint legal advisor to Oomi Oy and Lumme Energia Oy in a transaction whereby Lumme Energia will merge with Oomi. As from the completion of the merger, the combined entity will be the largest electricity retail and service company in the Finnish market. In 2024, Oomi reported a turnover of EUR 373.9 million and had approximately 110 employees. Lumme Energia’s turnover for the same year was approximately EUR 314.6 million and it had approximately 50 employees. The transaction is primarily driven by the recent developments in the electricity market and the strategic goal to develop competitive products and services. Another key objective is to further enhance the customer experience, which is a shared value between the two companies. As a result of the merger, Lumme Energia’s customers will transfer to Oomi, and Lumme Energia will become one of Oomi’s shareholders. The completion of the transaction is subject to an approval by the Finnish Competition and Consumer Authority.

Nevel – Acquisition of Labio’s business

We advised Nevel Oy in its acquisition of the business of Labio Oy. Lahti Aqua Oy and Salpakierto Oy sold their entire shareholdings in Labio to Nevel, expanding Nevel’s already significant biogas portfolio. The transaction will have no impact on Lahti Aqua’s water utility operations or Salpakierto’s municipal waste management responsibilities. Labio’s operations and customer relationships will continue as before. ‘This partnership is a natural next step for us as we continue investing in sustainable material efficiency and renewable energy solutions. By integrating Labio’s comprehensive offerings and expertise, we can provide customers with a strong platform for material circularity. We are also strengthening our market position as one of Finland’s leading material efficiency solution providers,’ says Ville Koikkalainen, Director of Industrial and Biogas Business at Nevel. Nevel is an energy infrastructure company offering advanced, climate-positive solutions for industry and real estate. It operates more than 130 energy production plants and manages over 40 district heating networks. Nevel’s annual turnover is EUR 150 million, and it employs 190 experts in Finland, Sweden and Estonia.

Latest insights

16.12.2025 – Environment, Energy & Green Transition Parliament approves substantial increases in tax on mined minerals

Tarja Pirinen

Mikko Alakare

Noora Ahonen

Tarja Pirinen, Mikko Alakare & Noora Ahonen

2.10.2025 – Environment, Energy & Green Transition Fingrid extends restrictions on new energy storage facility connections in Southern Finland until 2029

Konsta Peussa

Marius af Schultén

Konsta Peussa & Marius af Schultén

15.5.2025 – Environment, Energy & Green Transition Latest regulatory developments for renewable energy in Finland

Marius af Schultén

Konsta Peussa

Marius af Schultén & Konsta Peussa

7.4.2025 – Private Equity Tax credit for major clean transition investments passed in Parliament – application period until 29 August 2025

Janne Juusela

Mikko Alakare

Samuli Tarkiainen

Marius af Schultén

Jarno Tanhuanpää

Kanerva Sunila

Noora Ahonen

Janne Juusela, Mikko Alakare, Samuli Tarkiainen, Marius af Schultén, Jarno Tanhuanpää, Kanerva Sunila & Noora Ahonen

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