Languages

Finnish, Swedish, English

A woman with long brown hair, wearing a black shirt and pants, stands in front of a solid brown background. She is smiling slightly and has her hands clasped together in front of her.

Jenny Karlsson

Associate Energy & Infrastructure Transactions

A woman with long brown hair, wearing a black shirt and pants, stands in front of a solid brown background. She is smiling slightly and has her hands clasped together in front of her.

Languages

Finnish, Swedish, English

Jenny advises clients in our Real Assets Practice, which is a multi-disciplinary group of experienced lawyers whose expertise cuts across energy, infrastructure, real estate, construction, environment, and projects.

Jenny specialises in energy and infrastructure transactions and projects. In addition, she provides advice on general corporate and contract law matters and on environmental law.

Selected References

Parties:

Leppäkoski Group, Porin Energia Oy

Transaction:

Hannes Snellman advised Leppäkoski Group in the structured sales process of Leppäkosken Sähkö Oy to Porin Energia Oy. Leppäkosken Sähkö Oy operates electricity distribution system supplying electricity to more than 30,000 customers in the Pirkanmaa and Satakunta regions.

The completion of the transaction is subject to regulatory approvals and is expected to be completed by the end of 2026.

Value:

Not Public

Role:

Counsel to Leppäkoski Group

Contacts

Parties:

Iberdrola (Buyer), Caruna (Target)

Transaction:

Hannes Snellman is advising Iberdrola as Finnish counsel in the acquisition of a majority stake in Caruna.

Value:

EUR 5 billion

Role:

Finnish counsel to Iberdrola

Contacts

Parties:

Helios Nordic Energy AB (Seller), international independent power producers (IPPs) and infrastructure funds (Buyer)

Transaction:

Hannes Snellman has recently advised Helios Nordic Energy AB on the disposal of a 125 MW / 250 MWh battery energy storage system (BESS) project in Finland, bringing the total volume of BESS projects where Hannes Snellman has advised Helios Nordic Energy AB in the Finnish market to more than 550 MW / 1,100 MWh over the past year. The respective transactions, comprising six separate projects, have been completed with a mix of international independent power producers (IPPs) and infrastructure funds. All buyers remain undisclosed.

Deal value:

Not public

Role:

Counsel to Helios Nordic Energy AB

Contacts

Parties:

Usva Energia Oy, Prime Capital AG

Transaction:

Hannes Snellman advised Usva Energia Oy in the sale of a 100 MW ready-to-build energy storage facility project located in Teuva to Prime Capital AG. Once operational, the facility is planned to be connected to the transmission grid, providing flexibility and balancing capacity to the power system while supporting the integration of renewable energy. Our team provided legal advice throughout the transaction, including the negotiation and review of the transaction agreements in connection with the sale.

Value:

Not public

Role:

Counsel to Usva Energia Oy

Contacts

Parties:

OX2

Transaction:

Hannes Snellman Advised OX2 in the construction, development, offtake, and Finnish law aspects of the project financing of two energy storage facilities with a combined capacity of 235 MW/470 MWh

The energy storage facilities will be co-located with the Kannisto wind farm in Halsua and the Korkeamaa wind farm in Soini. Both energy storage facilities will be completed in 2028. The projects represent OX2's first energy storage additions to its Finnish IPP portfolio, and OX2 has secured a long-term flexible purchase agreement with Norwegian power producer Statkraft for the operation and optimisation of both storage facilities. OX2 has also secured a long-term project financing package with KfW IPEX-Bank, NatWest, Nordea, and SEB through an extension of the commitments already made towards the Kannisto, Korkeamaa, and Salo-Ylikoski wind power projects. The energy storage facilities will remain under OX2's ownership after completion.

Hannes Snellman advised OX2 in respect of the BESS supply agreements and long term service agreements, balance of plant agreements, optimisation agreements, due diligence as well as Finnish law aspects of the project financing.

Value:

Not public

Role:

Counsel to OX2

Contacts

Parties:

Metsähallitus, Nordic Generation

Transaction:

Hannes Snellman advised Finnish State enterprise Metsähallitus on the disposal of rights to three projects located in Simo, Kajaani, and Pyhäntä with a total envisaged nominal capacity of 800 MW to Nordic Generation. Nordic Generation is backed by the Octopus Energy Renewable Infrastructure Trust plc (ORIT) and Sky — two funds managed by Octopus Energy Generation, one of Europe’s leading investors in renewable energy projects.

Value:

Not public

Role:

Counsel to Metsähallitus

Contacts

Parties:

OX2, Prokon

Transaction:

Hannes Snellman advised OX2 in the acquisition of the Kattiharju wind farm development project envisaged to comprise 16 WTGs located in the municipalities of Isokyrö and Laihia from Prokon.

Value:

Not public

Role:

Counsel to OX2

Contacts

Hannes Snellman advised OX2 in respect of the construction contracts, PPA, development, due diligence as well as Finnish law aspects of the project financing.

Contacts

Parties:

Aneo AS, Arise AB

Transaction:

Hannes Snellman acted as local counsel for Aneo AS in the recommended cash-based public offer to the shareholders of Arise AB which is listed on Nasdaq Stockholm. Arise is one of the leading independent companies in renewable energy in the Nordics.

Value:

The total value of the offer amounts to approximately SEK 1.8 billion.

Role:

Counsel to Aneo AS

Contacts

Parties:

Exilion, Merus Power

Transaction:

Hannes Snellman advised Exilion, a leading Finnish renewable energy investor, on its approximately EUR 17 million investment into a 30 MW/66 MWh energy storage facility in Mäntyharju. Once operational in 2026, the facility will provide critical balancing capacity to the electricity market and enhance power system stability. Our team provided comprehensive legal advice on negotiating construction, supply, services and transaction contracts with Merus Power.

Value:

EUR 17 million

Role:

Counsel to Exilion

Contacts

Parties:

ABO Energy, Fortum Oyj

Transaction:

Hannes Snellman advised ABO Energy on the disposal of a majority stake in its Finnish wind farm development pipeline to Fortum Oyj. The portfolio comprises approximately 4.4 GW of onshore wind power development projects at various stages.

Update 1 December 2025: The transaction, announced on 23 July 2025, has now been completed.

Deal Value:

Value not public

Role:

Counsel to ABO Energy

Contacts

The Rajamäenkylä wind farm in Karijoki and Isojoki will be completed in 2028 and comprise 54 Nordex N175/6.8 wind turbines with a total capacity of 367 MW. The Honkakangas wind farm in Halsua will be completed in 2027 and comprise 16 Nordex N175/6.525 wind turbines with a total capacity of around 105 MW. The projects have a long-term PPA with a multinational corporate offtaker, and OX2 has also secured a long-term debt financing agreement with Santander Corporate & Investment Banking. The investment amounts to more than EUR 700 million, and the wind farms will remain under OX2’s ownership once constructed.

Hannes Snellman advised OX2 in respect of the construction contracts for full grid and balance of plant, turbine procurement, PPA, development, as well as Finnish law aspects of the project financing.

Our core team comprised Maria Landtman, Klaus Metsä-Simola, Marjaana Martikainen, Katja Perätalo, Minna Juhola, Elisa Panula, Emmi Malm, Julia Ranta, Linda Härkönen, Rauli Elenius, Alisa Ainonen, Elina Uitto, and Jenny Karlsson, (Real Assets), Josefina Aalto, Anna Huttunen, and Oona Aalto (Finance), Piia Ahonen and Harri Vehviläinen (Tax), Olli Mäkelä (Dispute Resolution), and Legal Assistants Victoria Reiter, Salla Mäki, Zoe Röpelinen, Melisa Göllü, and Laura Pöyhönen.

Contacts

Parties

Aneo, Greencoat Renewables

Transaction

Hannes Snellman acted as legal counsel to Aneo, Norway’s second-largest wind power operator, in its acquisition of the 43.2 MW Kokkoneva wind farm from Greencoat Renewables PLC.

Deal Value

Value not public.

Contacts
  • A man in a dark navy suit, white shirt, and patterned tie stands against a plain beige background with his hands behind his back, facing the camera with a neutral expression.

    Tapio Teräkivi

    Senior Partner +358 40 769 8273 tapio.terakivi@hannessnellman.com
  • A woman with straight brown hair, wearing a long-sleeved black blouse, stands against a plain, warm brown background, smiling gently with her hands clasped in front of her.

    Elisa Panula

    Managing Associate +358 50 917 6807 elisa.panula@hannessnellman.com
  • A woman with long blonde hair wearing a dark green dress stands against a plain orange background, smiling gently with her arms crossed.

    Linda Härkönen

    Senior Associate +358 44 272 9224 linda.harkonen@hannessnellman.com
  • A woman with long brown hair, wearing a black shirt and pants, stands in front of a solid brown background. She is smiling slightly and has her hands clasped together in front of her.

    Jenny Karlsson

    Associate +358 40 610 8754 jenny.karlsson@hannessnellman.com
  • A woman with wavy light brown hair, wearing a black long-sleeve dress and a watch, stands smiling with arms crossed against a plain light purple background.

    Anniina Somppi

    Senior Associate +358 40 641 3353 anniina.somppi@hannessnellman.com
  • A young woman with long, wavy brown hair stands against a plain light purple background, wearing a light pink blouse and a black skirt. She is smiling softly and has her arms crossed.

    Karoliina Kaartinen

    Billing and Collections Assistant +358 40 577 0425 karoliina.kaartinen@hannessnellman.com

Professional Background

  • Associate, Hannes Snellman, 2023–

Education

  • Master of Science (Economics and Business Administration), Hanken School of Economics, 2025
  • Master of Laws, University of Helsinki, 2023