Lauri Aine

Associate, Master of Laws

Services

  1. International Construction & Projects
  2. Dispute Resolution

Contact details

I advise our clients on infrastructure, industrial and energy projects, including contract negotiations, dispute resolution and mergers and acquisitions. I have experience in EPCM and EPC contracts, under various standard terms and conditions, such as the FIDIC and YSE 1998 conditions.

Before joining Castrén & Snellman, I worked for a big four accounting firm as a tax consultant, focusing on Finnish domestic corporate income tax and mergers and acquisitions.

In my current role, I am particularly inspired by the wide range of assignments in different areas of law. I enjoy working in an international environment that combines efficiency and challenging tasks.

Latest references

YIT – Data centre construction agreements with XTX Markets
We advised the urban developer and construction company YIT on the drafting and negotiation of two construction agreements with the leading algorithmic trading firm XTX Markets for the development of two data centres in Kajaani, Finland, which are part of XTX Markets’ data centre complex. The first agreement, valued at approximately EUR 100 million and signed in December 2024, marked the commencement of the construction of the first data centre facility in Kajaani, establishing Kajaani as a strategic hub for high-performance computing infrastructure.  Building on the success of this collaboration, YIT and XTX Markets entered into a second agreement in August 2025 to commence construction of a second data centre facility. This phase includes the delivery of the shell and core of the new building.
Case published 20.11.2025
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.
Case published 18.11.2025
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.
Case published 29.8.2025
Oomi  – Expansion into mobile telecommunications
We assisted Oomi Oy in its expansion into the mobile telecommunications market with the launch of Oomi Mobiili, a new MVNO brand. Our work covered the preceding due diligence process as well as structuring and negotiating key partner agreements, laying a solid foundation for Oomi’s entry into the new market. Oomi Mobiili will operate as a virtual mobile network operator, offering customers the option to purchase a mobile subscription together with their electricity contract. The phased launch is set to begin in autumn 2025, with nationwide availability targeted for early 2026. 
Case published 15.8.2025
Netel Group – Sale of Finnish Operations
We advised Netel Group, a Nasdaq Stockholm-listed contracting company, on the sale of its Finnish operations, Netel Oy, to a group of private investors. The divestment forms part of Netel Group’s strategic realignment. In January 2025, Netel Group announced its decision to exit the Finnish market in order to concentrate on its core markets in Sweden and Norway and growth markets in Germany and the UK. Netel Group is a leading provider of services in the development and maintenance of critical infrastructure within Infraservices, Power and Telecom across Northern Europe. The company has been listed on Nasdaq Stockholm since 2021.
Case published 1.7.2025
Finnish Construction Management Consultancy — District Court Dismisses charge in occupational safety offence case concerning a safety coordinator
We successfully represented a Finnish construction management consultancy and a safety coordinator employed by the company in criminal proceedings concerning an alleged occupational safety and health offence. The prosecutor sought a penalty for an alleged breach of occupational safety regulations. The charge arose from a fall accident at a construction site where our client acted as the safety coordinator appointed by the developer. We assessed the scope of the safety coordinator’s duties in relation to the responsibilities of the main contractor, as well as how our client had fulfilled their obligations in practice. We demonstrated that our client had acted with due care and in full compliance with their duties throughout the planning, preparation and execution of the construction project. The District Court of Eastern Uusimaa dismissed the charge against our client. The Court held that our client, in their capacity as safety coordinator, had duly fulfilled the occupational safety obligations incumbent on the developer during the planning and preparation phases of the construction project and had not been aware of the fall protection deficiency identified at the site. The judgment is final insofar as our client is concerned.
Case published 22.6.2026
Efima – Sale of financial management services business
We advised Efima Oyj on the sale of its financial management services business to Rantalainen as part of its strategic focus on fully concentrating on the delivery of business applications as well as data and AI solutions. As a result of the transaction, customer contracts related to financial management services and 65 experts working in these services will transfer to Rantalainen. The transaction will be carried out as a transfer of business, and the experts will move to the new owner as existing employees. Efima is a Finnish digital company that supports the sustainable growth of large and mid-sized companies by streamlining their business processes and by creating competitive advantage through the innovative use of artificial intelligence and data. The company has nearly 200 experts based in Helsinki and Tampere.
Case published 12.6.2026
Ugly Duckling Ventures – EUR 6.5 million funding round of Skyfora
We advised lead investor Ugly Duckling Ventures on the EUR 6.5 million funding round of Skyfora. The round also included Eviny Ventures, LUMO Labs and EIC Fund, alongside non-dilutive funding from Business Finland. The investment will support the commercial scale-up of Skyfora’s weather intelligence solutions, the expansion of partnerships with telecom operators, forecasting providers and meteorological institutions, and the continued growth of the team. Skyfora is a Finnish company developing high-resolution weather data solutions using patented technology that extracts atmospheric data from GNSS receivers embedded in existing infrastructure, such as telecom networks. By unlocking previously untapped data sources, Skyfora enables the next generation of AI-driven weather forecasting and supports improved decision-making across weather-sensitive industries. Ugly Duckling Ventures is a Copenhagen-based venture capital firm focused on early-stage Nordic B2B technology companies, with an emphasis on medtech, resilience tech and business services.
Case published 10.6.2026

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