Oomi – Transfer of KSS Energia’s electricity sales contracts for consumer and business customers to Oomi

Oomi – Transfer of KSS Energia’s electricity sales contracts for consumer and business customers to Oomi

The team impresses clients with its ‘ability to find commercial solutions to complex problems.’

Chambers Europe

Our offering covers the full spectrum of M&A legal advisory services. International publications consistently rank us among the best in the country.

We are one of the top Nordic advisors in cross-border deals, measured by both volume and value of the transactions. Our highlights range from public and private mergers and acquisitions to record-setting funding rounds and cross-border advisory in special situations.

As your advisor, we aim to support your decision-making processes in a manner that creates the most value and allows you to reach your strategic goals. Our holistic approach to project management ensures that we are geared to execute and coordinate even the most complex transactions as your international lead counsel.  In due diligence, we combine efficient execution with our in-depth understanding of corporate, commercial and regulatory matters to serve to-the-point advice. Once at the negotiation table, we want to excel and find win-win solutions that enable the deal to happen.

Our services include:

  • Strategic M&A advice & defence
  • Acquisitions & divestments
  • Cross-border transactions
  • Structured auctions 
  • Buyouts
  • Carve-outs
  • Joint ventures
  • Public M&A

We put together the best possible team for each transaction. Thanks to our firm’s full-service offering, we can flexibly complement our core team with experts from our other practices, such as tax, finance or competition. With a strong focus on premium quality and sustainability, we are constantly developing our offering and expertise. 

Latest references

Castrén & Snellman advised Nscale, a European AI infrastructure company, in connection with its planned data centre project in Harjavalta, Finland. The facility will be located in the Sievari industrial area. Castrén & Snellman’s advisory role encompassed the negotiation and execution of a site securing and development agreement (SSDA) with Fortum, as well as the preliminary land sale process for the Sievari site with the Town of Harjavalta. Under the SSDA, Fortum supports the advancement of Nscale’s project development, including grid connection design and permitting.
Case published 15.4.2026
We advised UK-based investment company Downing in its acquisition of the entire share capital of Tornionlaakson Voima Oy. Tornionlaakson Voima owns three hydropower plants in the Tengeliönjoki river system – the Portimokoski power plants in Ylitornio, the Jolmankoski power plants in Raanujärvi and the Kaaranneskoski power plants in Sirkkakoski. The power plants produce a total of approx. 45 gigawatt-hours of electricity per year. Tornionlaakson Voima’s daily operations will continue normally, and the transaction will not affect customers. The consummation of the transaction is subject to the approval of the Ministry of Economic Affairs and Employment. Downing has over 35 years’ experience in providing a wide range of investment solutions to the needs of institutional investors, advisers and retail investors. The company manages over £2 billion in assets in both the private and public markets and its current hydro power portfolio includes approx. 50 hydro power plants in the Nordics. 
Case published 27.3.2026
We advised Fingrid Oyj on the Finnish law aspects in the update of a EUR 3 billion Euro Medium Term Note programme (EMTN). Notes issued under the programme may be listed on the Irish Stock Exchange. Fingrid operates Finland’s main electricity transmission grid and all significant cross-border transmission connections. The main grid is the backbone of the electricity transmission network, to which major power plants, industrial plants and regional electricity distribution networks are connected.
Case published 17.3.2026
Castrén & Snellman successfully assisted Terrafame Ltd in environmental and water management permit processes concerning the company’s entire operations and the KL1 side rock area, on which the Supreme Administrative Court issued its decision on 12 February 2026 (KHO 366/2026 and 367/2026). The changes made to the decisions of the Vaasa Administrative Court as a result of Terrafame’s appeals, enable the company to implement its new strategy and develop its operations as planned. The decisions of the Supreme Administrative Court brought the nearly ten-year-long permit process to a close.
Case published 20.2.2026