Minttu-Maria Miettinen

Nscale – Data centre project

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.

15.4.2026

Downing – Acquisition of the entire share capital of Tornionlaakson Voima

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.

27.3.2026

Brookfield – EUR 1 billion holdco financing for DayOne Data Centers

We advised a leading global investment firm Brookfield, alongside a global sovereign wealth investor, on the Finnish law aspects of a EUR 1 billion holdco financing for DayOne Data Centers, a Singapore-headquartered developer and operator of hyperscale data centres. Structured as a seven-year secured holdco financing facility of €500 million, expandable to €1 billion – and secured by DayOne’s Finland platform – the financing will support the rollout of hyperscale developments in Lahti and Kouvola, providing nearly 300MW of planned capacity across Finland. The proceeds will also support DayOne’s global expansion across the EU and APAC, with flexibility to allocate to other key growth markets as required.

29.1.2026

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.

29.8.2025

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.

16.7.2025

Oomi Solar – Sale of solar power project portfolio

We advised Oomi Solar Oy on the sale of a 250-megawatt solar power project portfolio to Suomen Aurinkovoima Oy. The portfolio consists of ten separate projects, marking a significant development in the Finnish solar energy market and enabling over EUR 100 million in investments. Construction of the first projects is expected to commence as early as 2025, with sites located across various regions of Finland.

30.5.2025

Valio – Acquisition of the Härkis® and Beanit® fava bean brands

We advised Valio Oy in its acquisition of Raisio Oyj’s plant protein business, related fixed assets and the Härkis® and Beanit® fava bean brands. The fixed assets include, among other things, the production equipment of the factory that makes plant protein products in Kauhava. The transaction supports Valio’s strategy to grow from a dairy company to a food company. This business acquisition will make us an even more significant developer and producer of plant-based protein products. The demand for these products will grow in the long term, and a great deal of growth potential still remains. In 2022, we acquired the Gold&Green® business and, since then, we have been carrying out strong product development and renewed the brand. Following successful product launches, sales in the last quarter of 2024 increased by about 50% from the previous quarter. With this acquisition, we are building our own production capacity. The production equipment of the Kauhava factory is just right for our needs and situation. says Kimmo Luoma, Valio’s Senior Vice President. Valio is a Finnish dairy and food company founded in 1905 and owned by Finnish dairy cooperatives. Valio has subsidiaries in Sweden, Estonia, the United States and China. In 2023, the Group had a turnover of EUR 2 278 million and more than 4 000 employees.

14.2.2025

Fortum – Acquisition of a project development portfolio for renewable power from Enersense

We are acting as a counsel to Fortum in a transaction in which Fortum is strengthening its renewable power project pipeline through the acquisition of a project development portfolio from Enersense. The debt-and-cash free purchase price is approximately EUR 9 million, with the potential for project-specific earn-outs subject to projects successfully reaching a final investment decision in the future. The transaction is subject to customary closing conditions and is expected to be completed during the first quarter of 2025. Fortum is a leading Nordic energy company with the purpose to power a world where people, businesses and nature thrive together. Fortum’s core operations comprise of efficient, CO2-free power generation as well as reliable supply of electricity and district heat to private and business customers. The company is listed on Nasdaq Helsinki. One of Fortum’s strategic targets is to develop at least 800 MW of ready-to-build onshore wind and solar projects by the end of 2026.

19.12.2024

VR-Group – Sale of road logistics business to investment company Mutares

We acted as legal advisor to VR-Group Plc in their strategic decision to sell their road logistics business to the investment company Mutares. This transaction supports VR’s focus on rail transport in freight traffic. The road logistics business, which generated a revenue of approximately EUR 80 million in 2023, will be transferred to a newly established company under Mutares. The business unit employs around 75 people who will transition to the new company.

18.11.2024

Fortum – Sale of recycling and waste business

We acted as the lead counsel to Fortum in a cross-border transaction in which Fortum sold its recycling and waste business. The business was sold to thematic impact investing firm Summa Equity through its portfolio company NG Group. The debt-free purchase price is approximately EUR 800 million. Fortum’s recycling and waste business to be sold comprises municipal and industrial waste management and end-to-end plastics, metals, ash, slag and hazardous waste treatment and recycling services. These businesses are located in Finland, Sweden, Denmark and Norway and currently employ approximately 900 employees.

18.7.2024

Funds managed by OP – Sale of two modern logistics properties

We advised funds managed by OP in a transaction whereby they sold two modern logistics properties to Logian. Logian is a joint venture between Keva and Mrec Investment Management Oy. The properties are located in Tuusula close to the Helsinki Airport, and their area is approximately 32,300 square metres in total. The properties hold the LEED Gold certificate with energy class A and feature solar panels that generate a significant share of the electricity used by the properties annually.

3.7.2024

eQ’s residential fund Oivat Kaupunkikodit – Sale of residential portfolio

We advised Oivat Kaupunkikodit Ky, a fund managed by eQ, in the sale of a residential portfolio comprising four housing companies to Sirius Capital Partners. The value of the portfolio is approximately 45 million euros. The properties are located in central locations in Helsinki, Vantaa, Tampere and Turku and were completed between 2021 and 2023. The portfolio consists of 251 apartments with a total lettable area of approximately 10,000 square meters. The properties also have a high ESG profile and are equipped with solar panels.

22.4.2024

Catella Real Estate – Sale of an office property in Helsinki CBD

We advised Catella Real Estate AG in the sale of an office property located at Lönnrotinkatu 20 in Helsinki’s central business district to a fund managed by Slättö. The property will be refurbished and developed into a Bob W apartment hotel, which is expected to open to the public during the summer 2025. The building was originally constructed in the 1970s and has approximately 4,600 square meters of lettable space.

31.1.2024

LähiTapiola Aluekiinteistöt – Acquisition of a Retail Property Portfolio

We advised LähiTapiola Aluekiinteistöt Ky in its acquisition of a portfolio comprising three real estate companies. The buildings on the properties owned by the real estate companies, completed between 2016 and 2017, are located in Espoo, Vantaa and Ylöjärvi with excellent transportation connections. All three assets boast a high ESG profile with leading Finnish retailers Kesko and Tokmanni Group as their tenants.

11.1.2024

OP-Rental Yield non-UCITS fund – Sale of residential portfolio

We advised OP-Rental Yield non-UCITS fund in the sale of two modern apartment buildings to Nrep. The object of sale comprised 190 apartments with the combined area of approximately 10,600 square metres.The buildings were constructed in 2014 and 2018 and are located in Perkkaa and Matinkylä in Espoo.

4.7.2023

Seller – Sale of modern last-mile logistics terminal

We advised the seller in the sale of a modern last-mile logistics terminal in Helsinki, Finland to a fund managed by Slättö.

3.7.2023

Sagax – Acquisition of real estate companies

We advised Sagax in its acquisition of a portfolio comprising four real estate companies in Oulu. The buildings on the properties managed by the real estate companies were completed between 2018 and 2023 and are leased under long-term leases to Veho, Ahlsell and Onninen. The buildings have been constructed in cooperation with the tenants and thus perfectly meet their needs.

31.5.2023

Sagax – Sale and leaseback of MEKO AB’s central warehouse properties

We advised Sagax in a sale and leaseback transaction whereby Sagax acquired MEKO AB’s central warehouse properties in Finland. The target of the transaction encompasses six properties consisting mainly of industrial and warehouse premises. MEKO will continue to occupy the properties by virtue of triple-net lease agreements entered into in connection with the transaction. The transaction values the properties at EUR 36.5 million on a debt-free basis.

24.5.2023

NREP – Acquisition of a residential portfolio

We advised NREP in its acquisition of a residential portfolio comprising three residential properties and 226 apartments from S-Bank Housing non-UCITS Fund. The properties were completed in 2018, 2021 and 2022, and they are located in Espoo and Vantaa next to excellent public transportation connections and daily services. All of the three properties also have a strong ESG profile, which will be further improved upon one of the assets converting its heating system to geothermal heating during spring 2023.

14.4.2023

Lumo Kodit – Acquisition of 942 Apartments in Finnish Growth Centres

We advised Lumo Kodit Oy, a subsidiary of Kojamo plc, in the acquisition of 942 apartments in Finnish growth centres from a fund managed by NREP. The transaction concerns 13 high-quality properties completed between 2017 and 2021. Of the apartments, 461 are located in Helsinki, Espoo and Vantaa, 191 in Turku, and 290 in Jyväskylä.

28.6.2022

Fortum – Joint Data Centre Project with Microsoft

We advise Fortum in a collaboration project with Microsoft, whereby Fortum will capture the excess heat generated by a new data centre region to be built by Microsoft in the Helsinki metropolitan area. The data centres will use 100% emission-free electricity, and Fortum will transfer the clean heat from the server cooling process to homes, services, and business premises that are connected to its district heating system. This waste heat recycling concept from the data centre region will be the largest of its kind in the world.

18.3.2022

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