Lauri Aine

Associate, Master of Laws

Services

  1. International Construction & Projects

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
S-Bank – Issuance of EUR 150 million SNP notes and tender offer for notes maturing in 2026
We advised S-Bank Plc in its issuance of a EUR 150 million Senior Non-Preferred Notes and on the tender offer of its EUR 150 million Senior Preferred MREL Eligible Notes maturing in 2026. The tender offer required prior approval from the Finnish Financial Stability Authority based on the Commission’s regulatory technical standards (EU) 2023/827. The Stability Authority granted S-Bank a permission for repurchases of the notes. Based on the permission, S-Bank replaced the notes with own funds or eligible liabilities instruments of equal or higher quality at terms that are sustainable for the income capacity of S-Bank. According to the final tender offer results published on 10 December 2025, S-Bank repurchased a total of EUR 97.9 million of the notes. The new notes will pay a floating interest rate, which is determined based on 3-month Euribor added with a margin of 1.35 per cent. The notes were issued on 11 December 2025 and listed on Nasdaq Helsinki Ltd. The maturity date of the notes is 11 December 2029. The purpose of the issue was to meet the minimum requirement for own funds and eligible liabilities (MREL) and to finance the bank’s activities.
Case published 18.12.2025
eQ Community Properties Fund – Sale of seven social infrastructure properties
We are assisting eQ Community Properties Fund in the sale of seven social infrastructure properties to Kinland AS. The value of the transaction is approximately EUR 29 million, and the portfolio comprises three preschool facilities and four child protection units from different parts of Finland. The portfolio consists of modern and energy-efficient properties that are long-term leased to leading operators in the industry. The Weighted Average Unexpired Lease Term (WAULT) is approximately 11 years. The transaction is expected to close on 17 December 2025.
Case published 10.12.2025
Ålandsbanken – Consent solicitation process regarding T2 instruments and issue of SEK 350 million AT1 notes
We advised Ålandsbanken Abp in the consent solicitation process regarding its SEK 150,000,000 Tier 2 notes due December 2041 and SEK 200,000,000 Tier 2 notes due March 2043. The terms and conditions of the aforementioned instruments were amended by removing the write-down mechanisms in the consent solicitation process. In addition, we advised Ålandsbanken Abp on the issue of SEK 350 million Additional Tier 1 notes. The notes bear floating interest at the rate of STIBOR three months plus a margin of 3.35 per cent per annum. The AT1 notes were issued on 20 November 2025, and admitted to trading on the official list of Nasdaq Helsinki Ltd. The instrument has no maturity date and qualifies as Additional Tier 1 capital in accordance with the EU Capital Requirements Regulation. The issue strengthens Ålandsbanken’s capital structure by taking advantage of favourable market conditions.
Case published 10.12.2025

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