Arntzen Grette‘s energy practice advises clients across the entire value chain in oil and gas matters, acting as a trusted advisor to oil companies, contractors, and public authorities. On renewables, the firm is active on grid access, electrification, and power-from-shore projects. Karl Erik Navestad oversees the energy department, with broad expertise including FPSO projects, offshore development projects, and disputes. Rune Omdahl and Rune Tjomsås Andersen are other key names for oil and gas. Kristine Høivik Smedsrud heads up the renewables group. Odd-Harald Berg Wasenden chiefly focuses on regulatory matters relating to electricity, whereas Marius Svendsvoll Langnes works closely with developers, builders, and contractors on energy plants and infrastructure matters in the power sector.
Energy in Norway
Arntzen Grette
Responsables de la pratique:
Karl Erik Navestad; Kristine Høivik Smedsrud
Autres avocats clés:
Rune Omdahl; Rune Tjomsås Andersen; Odd-Harald Berg Wasenden; Marius Svendsvoll Langnes; Aleksander Dypvik Myklebust; Benjamin V. Kristensen
Les références
‘They seem to have a bit more operational experience from relevant industries than others.’
‘Very attentive and proactive, on top of high skill and knowledge.’
‘Arntzen Grette is a company that has significant experience in the market we work in. They can set up effective teams to solve the individual problems we come up with. They are also flexible and solution-oriented when it comes to finding competitive terms to do an assignment.’
Principaux clients
Inpex Idemitsu
Orlen
Imenco Corrosion Services
Gassco AS
Lime Petroleum AS
Lime Petroleum Holding AS
Akrake Petroleum Benin S.A
Lime Resources Germany GmbH
Storegga Norge AS No
Concedo AS
Principaux dossiers
- Advised the Norwegian E&P company Lime Petroleum on the cross-border corporate restructuring and international expansion of its group structure across eight different jurisdictions.
- Advising Akrake Petroleum Benin on the re-development of an oil field offshore in the Republic of Benin, spanning all aspects of field development, including negotiations, regulatory compliance and legal structuring, in-depth advice on Beninese petroleum legislation, tax frameworks and constitutional limitations.
- Advised Norwegian independent E&P company Concedo AS – backed by international investors, the Swiss-based Lundin family through their investment vehicle Attica Exploration AS – on the successful acquisitionof the Bøyla oil field from Vår Energi ASA.
BAHR
The energy and environmental law practice at BAHR has seen an increased stream of work across project development, M&A, and regulatory matters, as well as growth of activity in the energy transition space. Jon Christian Thaulow co-heads the energy & environment department and chiefly concentrates on transaction support and project development. Co-head Stig Klausen Englehart maintains a varied stream of work in the energy space, spanning from regulatory guidance to project development. Rune Svoren is an industry veteran in transactional electricity mandates, whereas Per Aksel Hammer Krog has been active on projects and M&A relating to the energy transition. Inglin Sognnæs adds experience in the renewable energy space, advising on the structuring of large-scale projects. Thomas Svensen leads the oil and gas sub-group with broad activity on field development projects, contracts, and regulatory matters. Jan B. Jansen is a seasoned advisor to oil and energy clients on tax, litigation, and transactional mandates. Trond Lingaas is a key name for oil and gas M&A deals. Peter Aall Simonsen joined the firm in October 2025.
Responsables de la pratique:
Jon Christian Thaulow; Stig Klausen Engelhart; Thomas Svensen
Autres avocats clés:
Rune Svoren; Per Aksel Hammer Krog; Inglin Sognnæs; Jan B. Jansen; Trond Lingaas; Stig Klausen Engelhart; Peter Aall Simonsen
Les références
‘BAHR has a very strong team that can be seamlessly scaled up and down according to need. The team has covered all aspects of complicated transactions excellently.’
‘The partner in charge of our company, Stig Klausen Engelhart, has stood out as an exceptionally capable partner in numerous projects and processes he has been involved in. In particular, his a very strong commercial understanding and the ability to find good solutions that are beneficial for all parties.’
‘Team is always efficient and proactively solving for clients and transaction needs. High degree of knowledge about the sector.’
Principaux clients
Hafslund AS
Statnett
Oslo Municipality (Oslo kommune)
Vanir Green Industries
Aquila Capital
Ventyr SN II AS
Mainstream Renewable Power
Celsio (formerly Fortum Oslo Varme)
T1 Energy
SLB Capturi
Aker Horizons ASA
HitecVision
Øyfjellet Wind AS
Fortecue Future Industries
Norsk Vannkraft AS
Vårgrønn
Aker group and portfolio companies (such as Aker ASA, Aker BP, Aker Solutions, Akastor and Aker Energy)
HitecVision and its portfolio companies (such as Sval Energi and Hav Energy)
Equinor
Neptune Energy Group
Shell
OMV
TOTAL
Vår Energi
Silex Gas Norway
Okea
Trudvang CCS ANS (and its owners Sval Energi AS, Storegga, and Neptune Energy)
Cape Omega AS (owned by Partners Group)
Principaux dossiers
- Advises Aker Horizons on the Narvik green hydrogen project, providing end-to-end support on corporate structuring, regulatory issues, real estate, contracts, and offtake arrangements.
- Advises Aquila Capital/ Øyfjellet Wind AS in connection with its acquisition of the Øyfjellet wind farm.
- Advising Neptune Energy and its shareholders on the USD 4.9 billion sale of its Norwegian business to Vår Energi and the remainder of the group to Eni.
Advokatfirmaet CLP DA
Advokatfirmaet CLP DA’s renewable energy, power and transmission department is adept at traditional energy and renewable matters. Practice head Amund Erdal frequently assists utilities and energy project developers on projects and transactions, including work on hydrogen projects and offshore wind licenses. Magnus Ryenbakken and Julie Reinfjord are key supportive presences on matters.
Responsables de la pratique:
Amund Erdal
Autres avocats clés:
Magnus Ryenbakken; Julie Reinfjord; Kristoffer Gjesdahl
Les références
‘An extremely flexible team headed by individuals which understands the industry and sector. Key capabilities are transactional work and PPAs.’
‘Amund Erdal possesses a unique combination of M&A expertise and a deep, holistic understanding of the energy value chain and associated regulatory matters.’
Principaux clients
Å Energi AS
Arendals Fossekompani ASA
Fortum Oyj
Climate Fund Managers B.V.
ECO Stor AS
Å Energi Vannkraft AS
Fortum Strøm AS
Ånstadblåheia Vindpark AS
Nygårdsfjellet Vindpark AS
Vest-Telemark Kraftlag
Entelios AS
Norbioen AS
Skala Partners AB
Sørfjord Vindpark AS
Rune Isachsen Holding AS
Baze Technology AS
Enfo Technology AS
Møre og Romsdal Havn IKS
Å Energi Invest AS
Volue ASA
Intex Resources ASA
eSmart Systems AS
Resoptima AS
Otovo
Hy24
CMS Kluge
CMS Kluge‘s energy, industry and climate team is well-positioned to advise oil and gas companies in adapting to the energy transition, combined with an increasing renewables portfolio covering offshore wind and CCUS. Olav Hasaas heads up the team and is well-versed in E&P transactions and offshore development projects. Dispute resolution specialist Asle Bjelland is a name of note for public and private sector clients. Beate Kathrine Berge is engaged in offshore and onshore wind projects, advising clients on power production and grid connection.
Responsables de la pratique:
Olav Hasaas
Autres avocats clés:
Asle Bjelland; Beate Kathrine Berge; Henrik Nordling
Les références
‘A key strength of CMS Kluge is that their industry understanding is second to none.’
‘Olav Hasaas is a standout member of the CMS Kluge team. He has an exceptional understanding of the energy sector and is a great partner to have in all stages of a transaction.’
‘Henrik Nordling is another brilliant individual at CMS Kluge. He wields impressive legal skills and ability to apply onto real life situations, as well as a brilliant way of conveying important messages.’
Principaux clients
NND
Norsk Hydro
Hydro REIN
Gassnova
Capsol Technologies
LOTOS Exploration and Production Norge
Akershus Energi Varme
North Sea Energy Park
Skagerak Varme
Elmera Group
Luxcara
Norsk Fjernvarme
Friends of Earth Norway (Naturvernforbundet)
Young Friends of Earth Norway (Natur og Ungdom)
Norsk Varmepumpeforening
NHO Elektro
Montel
Aarbakke
CMS Cameron McKenna Nabarro Olswang
Gassnova
ORLEN Upstream Norway
Optilift
Petoro
Pandion Energy
Repsol Norge
Total E&P Norge
Wellesley Petroleum
Circle K
OMV Norge
Principaux dossiers
- Advising NND, the Norway-based administrative body tasked with decommissioning the Norwegian nuclear facilities and handling all man-made radioactive waste, on all aspects of the acquisition of all Norwegian nuclear facilities, as well as several other matters.
- Advising Friends of Earth Norway (Naturvernforbundet) and Young Friends of Earth Norway (Natur og Ungdom) on a lawsuit regarding the validity of a permission to deposit mining waste in a Norwegian fjord and the interpretation of the Water Framework Directive.
- Advising Norsk Hydro on the acquisition of shares in Hydrovolt, the European battery recycling company.
DLA Piper
Fielding a full spectrum renewable energy practice, DLA Piper is engaged by clients on M&A, project finance, construction, and disputes, among others. Spearheading the practice, Anders Hilt combines expertise in energy with knowledge in planning and building, which he lends to clients across the lifecycle of projects. With experience in M&A and equity capital markets, Siren Ellensen is prepared to handle renewable energy transactions. Kaare Oftedal departed in October 2024.
Responsables de la pratique:
Anders Hilt
Autres avocats clés:
Siren Ellensen
Les références
‘The team encompasses lawyers with different specific background specialisations, which guarantees the client with ad hoc knowledge. It also works very well with expertise in other areas outside the legal counsel associated with the technical area, and we need to make decisions where different expertise, for example, topics related to M&A, tax, communities, DLA can offer a full integrated package that can work as a whole.’
‘Reliability, a person who can follow up during the entire project and offer a very valuable backup in case of changes. Usually their approach is not only providing the right person with specific knowledge, but also to make sure that the individual understands and adapts to the client company’s policies and values.’
‘Very serious and professional.’
Principaux clients
Prime Capital AG
Tesi (Finnish Industry Investment Ltd)
Hydropower AS
Adven Norway AS
Vergia
GE Power Norway AS / GE Renewables Norway AS
Arda Energy AS
Start Campus
New Kaupang AS
Pareto Solar Fund AS
LanzaTech
Midt-Finnmark Kraftlag SA
GE Vernova
Green Mountain AS / Green Mountain Innlandet AS
Area Nett AS
Norsk Vannkraft AS
Ming Yang Wind Power Group
Renantis Norway AS (Nadara)
Energy Infrastructure Partners
Cloudberry Clean Energy
Fred. Olsen Renewables AS / Fred. Olsen Investments AS
Aqualung Carbon Capture
STX Group
Biopower
RaKon
Odal Vindkraftverk
Nordic Wind Power
Cube Infrastructure Managers
Frevar
OX2 Wind
Gassnova
Saren
Runway FBU Fund I
EdgeConneX
Principaux dossiers
- Advised Prime Capital AG on its strategic investment in Norsk e-Fuel AS to develop aviation fuel production facilities.
- Advising EdgeConneX on the EUR 4bn development of a 365 MW renewable-powered data centre project in Norway.
- Advising Gassnova, the Norwegian state-owned CCS entity, on regulatory and state aid frameworks for carbon capture and storage incentives under EEA law.
Advokatfirmaet Haavind AS
Advokatfirmaet Haavind AS is a leading advisor in the renewables sector, with activity on production projects and electricity grid projects. Aksel Tannum leads the renewable energy department and has a demonstrable track record assisting with power generation, grid, and power sales. Jøran Sandvik lends his experience from working at the Norwegian Ministry of Energy to power companies, industrial companies, and investors. Mari Reitzel Bjerke chiefly focuses on project development, construction, and contractual matters in the renewables sector. Christopher Sveen leads the aquaculture, offshore, and industries practice and is adept in the offshore energy industry with experience across the full life cycle of oil and gas projects. Bård Sandstad is a capable advisor on transactional work within this space.
Responsables de la pratique:
Aksel S. Tannum; Christopher Sveen
Autres avocats clés:
Pål Martin Abell; Jøran Sandvik; Mari Reitzel Bjerke; Bård Sandstad
Les références
‘Aksel S. Tannum – easy to communicate with. Responds quickly and to the point, understanding the actual needs of the client.’
‘Both very good legal knowledge and commercial knowledge, gives straight to the point advice.’
‘Haavind has a strong tradition of legal support for the oil and gas industry. Haavind provides pointed, clear advice with strong industry understanding and knowledge.’
Principaux clients
Statkraft
Eolus
Statnett
BlackRock Inc.
Equinor
Axpo Nordic and Axpo Trading
Vattenfall
Norsk Hydro
Stadtwerke München
Elvia
Å Energi
Eramet
Alcoa Norway
Renewables Norway (Fornybar Norge)
Helgeland Kraft
Skagerak Kraft
Salten Kraftsamband
Sunnfjord Energi
SFE
Elkem
Norsun
Otra Kraft
Vardar
Taaleri Energia Oy
Glitre Nett
Øyfjellet Wind
Hafslund Kraft
NTE Energi
Ymber
Vissi
Eramet Norway AS
NOV (formerly named National Oilwell Varco)
AF Offshore Decom AS
Norsk Industri AS
Vår Energi
Aker Solutions ASA
Broadview Energy Solutions BV
Barents Naturgass AS
Grieg New Energy AS
Principaux dossiers
- Acted as BlackRock’s key adviser under Norwegian law in connection with the sale of the wind farms Tellenes and Guleslettene.
- Represents Swedish renewable energy player Eolus and Øyfjellet Wind AS in a dispute regarding the validity of the license to establish Øyfjellet wind power plant.
- Acts as legal advisor to the industry organisation Renewables Norway on all aspects of the renewables sector.
- Acts for the Federation of Norwegian Industries on the development and implementation of all new standard contracts for deliveries to the Norwegian Continental Shelf (NCS) and various other initiatives for development of the oil & gas and offshore industry.
- Acted as strategic advisor to Aker Solutions in its large initiative to outsource its global IT and BPO services to enhance operational efficiency and competitiveness within its areas of operation, including in the offshore construction and oil and gas sector.
Advokatfirmaet Hjort
Advokatfirmaet Hjort operates across the green transition sector, with activity across CCS, offshore wind, and hydrogen production projects. Kristin Bjella oversees the group and has a well-rounded knowledge of the energy sector, particularly in the development of hydropower, onshore wind power, and power grids. Jørn A Uggerud has notable proficiency in renewable energy matters. Veronika Steen Amundsen combines her knowledge of corporate law with her expertise in dispute resolution to advise on transactions and projects within the renewable energy sector, and Sjur Obrestad Gabrielsen chiefly focuses on public regulations.
Responsables de la pratique:
Kristin Bjella
Autres avocats clés:
Jørn A Uggerud; Veronika Steen Amundsen; Sjur Obrestad Gabrielsen; Frode Innjord
Les références
‘High level of knowledge about our business.’
‘In-depth knowledge about the legal framework of hydropower production and the electricity grid.’
‘The willingness to renew themselves, understanding upcoming regulations early to support clients in getting a competitive edge.’
Principaux clients
Å Energi AS
Å Energi Vannkraft AS
Energiselskapet Hardanger group
Source Galileo Norge AS
Statkraft SF
Fosen Vind DA
Roan Vind DA
Copenhagen Infrastructure Partners
Borg CO2 AS
Hydropower AS
NODES Market
Goliatvind AS
Utsiravind AS
Statnett SF
Norsk fjernvarme
Aneo AS
Sogn og Fjordane Energi AS
SFE Produksjon AS
Vidju Holding AS
Føie AS
Smelteverket Eiendom AS
Novenco AS
Vissi AS
Batteriretur AS
Glitre Nett AS
Bodø Energi AS
EPI (Environmental Port Index)
Menon Economics
Fiskeri- og havbruksnæringens forskningsfinansiering
EITI
Norges Televisjon AS
Principaux dossiers
- Advised Bodø Energi AS and Bodø kommune on the potential sale of a minority stake in Bodø Energi AS, including strategic and legal support throughout the transaction process.
- Advised Goliatvind AS, a consortium including Source Galileo, Odfjell Oceanwind, Kansai Electric Power, and ENEOS Renewable Energy, on the development and regulatory aspects of the GoliatVIND floating offshore wind project.
- Advised the Norwegian Seafood Research Fund and Menon Economics on a comprehensive legal analysis of grid companies’ connection obligations for the seafood industry, mapping regulatory requirements and infrastructure needs critical to sector growth and emission reduction.
Kvale Advokatfirma DA
Kvale Advokatfirma DA‘s electricity and renewable energy department covers a wide array of matters, including transactional, regulatory, and contentious work within the sector. Department lead Kristin Ourom remains a first port of call for support on operational and regulatory aspects relating to renewable energy. Christian Poulsson adds additional regulatory expertise to the team, covering derivatives trading and natural resource issues. Gry Bratvold heads up the oil and gas segment and is active on offshore renewable mandates, alongside chiefly focusing on FPSO projects and subsea projects.
Responsables de la pratique:
Kristin Ourom; Gry Bratvold
Autres avocats clés:
Christian Poulsson; Per Conradi Andersen; Lilly Kathrin Relling
Les références
‘It’s a great team with strong individuals and the ability to pull on the larger Kvale organisation on non-domain / general matters.’
‘Kristin Ourom is professional, responsive, and gives great advice on complex matters. Last summer, Kristin assisted us with a last-minute response to new regulatory inputs. She is creative in the solution space with an ability to clearly read the position of all parties involved.’
‘Profound knowledge of renewable energy and the energy market in general.’
Principaux clients
AS Saudefaldene
aventron
Captiva Capital Management
Cloudberry Clean Energy
Eidsiva Energi
Eiker Energi
Elvia
Gismarvik Vindkraft
Glitre Nett
Hafslund
Hafslund Magnora Sol
Hålogaland Kraft
Hammerfest Energi
Hemsedal Energi
Hydro REIN
Kjerringnes Kraft
Kraftanmelding
Kraftia
Markåni Kraftverk
Mind Energy
NEAS
Nettalliansen
Nord-Salten Kraft
Norsk Hydro
Notodden Energi
Rauland Kraftlag
Repvåg Kraftlag
Rissa Kraftlag
SFE
Sirdal Kraft
Skjåk Energi
Steindal Kraftverk
Svorka Energi
Sykkylven Energi
Syversætre Foss Kraftverk
Tafjord Kraft
Telemark Energi
Tinn Energi
Volue Market Services / Markedskraft
Ytre Oppedal Kraftverk
Havila
Fearnlys Offshore
Bourbon Offshore Norway
First Marine
Brit Syndicate 2987
Nørresundby Rederi & Shipping af 2017
Vilma Oil
Hardangerfrakt
Clarksons Platou
Kongsberg Maritime
Noble Corporation (formerly Maersk Drilling)
Statnett SF
Solution Seeker
WR Berkley Insurance (Europe)
Lancashire Insurance
Eagle Burgmann Norway
BW Offshore
Iberdrola Renovables
Yinson Production
KC Offshore
Havila
Fearnlys Offshore
Bourbon Offshore Norway
First Marine
Brit Syndicate 2987
Nørresundby Rederi & Shipping af 2017
Vilma Oil
Hardangerfrakt
Clarksons Platou
Kongsberg Maritime
Noble Corporation (formerly Maersk Drilling)
Statnett SF
Solution Seeker
WR Berkley Insurance (Europe)
Lancashire Insurance
Eagle Burgmann Norway
BW Offshore
Iberdrola Renovables
Yinson Production
KC Offshore
Principaux dossiers
- Advised BW Offshore on the strategic transition of FPSO BW Adolo operations to BW Energy, including drafting amended charters, facilitating legal frameworks, and coordinating seamless operational transfers across multiple jurisdictions.
- Advised Viking Engineering on a high-profile, cross-border shareholder dispute, involving enforcement of a Singapore judgment and proceedings in Norwegian courts, including the Supreme Court.
- Acted as counsel for KC Offshore, a Mexico-based offshore service company, providing comprehensive legal and strategic advice on maritime contracts, international compliance, and offshore vessel operations.
SANDS
Home to a multidisciplinary team, SANDS is able to act on oil and gas projects, disputes, financing, and the S&P of assets. Lars Berge Andersen co-heads the practice and acts for supplier and asset-owner clients across his far-reaching practice. The renewable energy team is geared to support transactions, reorganisations, and project development. The team is also co-led by Alf Øystein Skudal, a go-to contact for matters across the renewable energy arena, particularly regulatory frameworks, transactions, and project development. Thomas Borch-Nielsen joined the team from Arntzen Grette in October 2025, while Martine Cedergren Dysvik joined the firm in October 2025 from an in-house position.
Responsables de la pratique:
Alf Øystein Skudal; Lars Berge Andersen
Autres avocats clés:
Ingvild Røv; Thomas Borch-Nielsen; Martine Cedergren Dysvik
Les références
‘We got good help from Alf Øystein Skudal and his team. Without their competence and help, we would not have won the case.’
‘Alf Øystein Skudal was the one we were in contact with. Good knowledge of the legal issues, and was easy to reach. Very efficient and easy to discuss with.’
‘SANDS is really good when it comes to oil and gas. It’s our go-to firm in Norway.’
Principaux clients
Login Vinterbro AS
Captiva Capital and affiliated companies
Kraftanmelding AS
Gudbrandsdal Energi
Dønnesfjord Vindpark AS
Kraftia Energi AS
Vesterålskraft AS
Aventus Green Technology AS
Safelink AS
Føn Energy Services AS (owned by Akastor ASA)
Sira Kvina Kraftselskap
Ren Røros AS
Clean Industrial Solutions Holding AS
Glitre Nett AS
Baltic Power Reserve SIA
Umoe Group
Myklebust Grunneigarlag
Småkraft AS
Buskerud Salg
Energihuset Marked AS
Ingunn Skjelbreidalen
Marwil Energy
Per Wold
OSM Thome
Scana ASA (listed)
Archer ASA (listed)
Akastor ASA (listed)
DeepOcean Group
Nekkar ASA (listed)
Safelink AS
Semar AS
Umoe Group
Drydocks World LLC (Dubai)
Høegh LNG
PG Flow Solutions AS
Atlantica Tender Drilling
Affinity
Alpin Shipping
Semco Maritime
RGA Energy Holdings
Føn Energy Services AS
DDW Offshore AS
Modec
Principaux dossiers
- Advised Gudbrandsdal Energi Holding on its acquisition of grid and broadband operations from Skjåk Energi.
- Advised DeepOcean Group on multiple cross-border tenders for offshore wind projects in Europe and Asia, including strategic and contractual support on cable lay, EPCI, and T&I scopes.
- Advising Vesterålskraft on the cross-border sale of its district heating subsidiary Vesterålskraft Varme to Solør Bioenergi Varme, including due diligence, SPA negotiation, land rights, lender coordination, and regulatory approvals.
- Represented Scana ASA on a NOK 1.8bn maintenance and upgrade project for Equinor’s Mongstad Port Facilities, including a complex multi-jurisdictional project, contractual and dispute resolution support.
- Advised DeepOcean AS on its USD 600m, 8-year IMR services contract with Equinor and related vessel charter from REM Offshore, including risk evaluation, back-to-back contract structuring and negotiations under Norwegian Subsea Contract 05 and SupplyTime 2017.
Advokatfirmaet Schjødt AS
Within the oil and gas space, Advokatfirmaet Schjødt AS is well placed to advise clients on transactions and international expansion plans. Co-head Preben Willoch is engaged in corporate transactions and regulatory compliance within this space, while co-head Erlend Bakken advises on projects, corporate finance, and restructurings within oil services and E&P. Camilla Grytten is positioned as a key advisor to E&P companies in the green transition, and Christian Fredrik Michelet adds aptitude in oil and gas litigation and transactions. The renewable energy practice at the firm advises on joint ventures and projects. Head of the practice Sindre Søndenå Andersen demonstrates skill in domestic and international M&A and joint ventures within this space.
Responsables de la pratique:
Sindre Søndenå Andersen; Preben Willoch
Autres avocats clés:
Camilla Grytten; Christian Fredrik Michelet; Thomas Behné Ramsnes; Erlend Brun Bakken
Les références
‘Thomas Behné Ramsnes has deep knowledge about the oil and gas market.’
‘They are strong on the law and also very easy to work with. The team is responsive, practical, and brings a fresh, international perspective that sets them apart in Norway.’
‘Always full focus on the core of the issues at hand, no derailing and no red tape.’
Principaux clients
Corvus Energy AS
BP
Norsk Vind AS
Lyse Energi AS
Odfjell Oceanwind AS
Magnora ASA
Norsk Havvind AS
Norsk Renewables AS
Nysnø Klimainvesteringer AS
Seagust AS / Arendal Fossekompani / Ferd
Tafjord Kraft AS
Vårgrønn AS
Easee ASA
Norwegian Hydrogen AS
Elmera Group ASA / Fjordkraft AS
TotalEnergies EP Norge AS
Norcable AS
Moreld Offshore Wind
Hystar AS
Norsk e-Fuel AS
Eurus Energy Europe B.V/Eurus Energy Holdings (JPY)
Norwegian Government, Ministry of Children and Families
Valinor AS
Seacap AS
Nextcable AS
Altera Infrastructure LP
Vår Energi ASA
Orlen Upstream Norway AS
TotalEnergies EP Norge AS
Petoro AS
Harbour Energy Norge AS
Wellesley Petroleum AS
ExxonMobil Exploration & Production AS
Kistos Energy Norge AS
Source Energy AS
Petronor E&P ASA
INPEX Idemitsu Norge AS
Japan Production and Exploration Co. Ltd.
ONE-Dyas B.V.
Harbour Energy plc.
Altera Infrastructure
Repsol Norge AS
Sval Energi AS
Principaux dossiers
- Advised Odfjell Oceanwind AS in securing a stake in the Salamander offshore wind farm in Scotland, and trying to distribute its technology and achieve profitable onshore wind developments.
- Advised BP with the establishment of a JV with JERA in a considerable renewables transaction, formation of JERA Nex bp and the indirect acquisition as part thereof of a considerable interest in offshore wind project Sørlige Nordsjø II.
- Advised Norsk Vind AS on entering the Albanian wind market, expanding its renewable energy portfolio.
Selmer
Selmer fields a comprehensive oil and gas practice, which continues to attract new E&P clients for assistance on projects. Practice head Anders Wilhelmsen is an experienced litigator, notable for his work on petroleum taxation. Øyvind Olimstad chiefly focuses on oil and gas transactions. The firm’s renewable energy practice is a regular advisor to clients in the wind, hydro, and solar industries. Håkon Sandbekk leads the practice and has notable proficiency in all stages of renewable projects, spanning from planning to financing. Liv Monica Stubholt maintains a varied practice covering regulatory, compliance, and corporate mandates in the industry.
Responsables de la pratique:
Anders Wilhelmsen; Håkon Sandbekk
Autres avocats clés:
Nicolai Myren; Magne Kielland; Martin Tandstad Ege; Maria Therese Mikkelsen; Øyvind Olimstad
Les références
‘The team has gathered a unique understanding of the emerging CCS industry.’
‘Øyvind Olimstad is an extremely sharp, customer-oriented and responsive partner who thinks along with its customers in difficult negotiations.’
‘Full coverage within the team to support on all fronts. The « can do » attitude, energy, and flexibility to ensure all work is done as required are priceless. Quality of work excellent.’
Principaux clients
TotalENergies EP Norge AS
OMV Norge
TechnipFMC
KANFA
Haliburton
OKEA
Pandion Energy
Petrolia NOCO
Offshore Norge
China Oilfield Services (COSL)
Ocean Installer
Hafslund / Hafslund Oslo Celsio
Stockholm Exergi
Å Energi (formerly Agder Energi and Glitre Energi)
Arva
BKW Energie
Cadre
Corio Generation
Eiffel Investment Group
EnBW Energie Baden-Württemberg
Energy Infrastructure Partners (EIP)
Finnmark Kraft
Fortum
Glitre Nett
Green Ammonia Berlevåg
Hafslund Celsio
Havfram
Helgeland Kraft
Iberdrola
Indre Salten Energi (ISE)
Lofotkraft
Lysvatn (formerly Meløy Energi)
Morrow Batteries
Nexans
Nordic Wind BV
Norwegian Export Credit Agency (GIEK)
RWE
SAREN Energy
Solgrid AS Y
Solør Bioenergi Varme AS
SSE Renewables
Statkraft
Statnett
Technip FMC
TGS Y
Varanger Kraft
Wind Catching Systems
Principaux dossiers
- Advised France-based Eiffel Investment Group on the acquisition and entering into a strategic cooperation with Norwegian hydro power developer Odel Energy, comprising a portfolio of appx. 180 projects in various stages of development.
- Advising Netherlands-based Nordic Wind and its owners, Fortum and Energy Infrastructure Partners, on a broad range of legal matters relating to its operational onshore wind portfolio in Norway, Sweden and Finland, including portfolio financing, restructuring, service agreements, and wind turbine contracts.
- Advising Iberdrola on its strategic participation in a high-stakes joint venture with TotalEnergies and Norsk Havvind.
Advokatfirmaet Simonsen Vogt Wiig
The oil and gas practice at Advokatfirmaet Simonsen Vogt Wiig is active in oil field facilities construction, procurements, disputes, and capital raising matters. Bjørn-Erik Leerberg regularly advises on law of the sea matters relating to natural resource-related offshore activities, while Gunnar Espeland handles field development, onshore, and offshore construction projects. Siri Olstad covers contract management and compliance advice. Robin Aker Jakobsen leads the climate energy industry group, which is active across power grid issues, renewable energy projects, and hydroelectric power. Peter Aall Simonsen departed from the practice in 2025, while Stig Walle joined in October 2025.
Responsables de la pratique:
Bjørn-Erik Leerberg; Gunnar Espeland; Siri Olstad; Robin Aker Jakobsen
Autres avocats clés:
Pål Brudvik; Stig Walle
Les références
‘I think Advokatfirmaet Simonsen Vogt Wiig has the right knowledge, understands client needs, and is more effective compared to some other legal firms.’
‘The team has all the resources available to ensure the right people are working on the task. All this while being able to represent and clearly formulate even complex legal situations and a good sense of the need for additional legal claims or rather settlement.’
‘The legal expert which supported my diverse cases were always dedicated to the case, seemingly as if they had no other cases to cover. This gave me, as a customer, the sense of having exclusive support.’
Principaux clients
RWE AG
Prime Capital AG
Statkraft AS
Vestas Norway AS
Norwegian Air Shuttle ASA
Eksfin (Export Finance Norway)
SpareBank 1 SR-Bank ASA
HyCap Group / Vedra Partners Limited
Tibber AS
CapMan Infra Oy
NAEV Solventus S.a.r.l.
REN AS
Tensio AS
Haugaland Kraft AS, including Fagne AS
Å Energi AS / Glitre Energi AS / Glitre Energi Nett AS
NTE
Linja AS
Arva AS
BKK AS
Linea AS
Principaux dossiers
- Advising RWE Wind Norway in relation to Norwegian wind power projects pursuant to a framework agreement, including ongoing work relating to preparations for bidding and being allotted exclusivity to two areas being opened for offshore wind power on the Norwegian continental shelf.
- Advising Norwegian export credit agency Eksfin (as export guarantor) in relation to the Dogger Bank wind farm projects (phases A, B and C), located between 125 and 290 km off the east coast of Yorkshire, UK.
- Advising Prime Capital AG, a German investment fund manager, on its purchase of the companies Tromsø Vind AS and Raudfjell Vind AS, which own the Kvitfjell and Raudfjell wind power projects (Project Northern Lights) (with a total installed effect of 280 MWh).
Advokatfirmaet Thommessen AS
Advokatfirmaet Thommessen AS‘s oil and gas group maintains a steady caseload of M&A within the oil services industry, as well as being active on development projects. Christian Hals heads the group and works closely with listed and private entities on transactions within this space. Pål Lieungh is a leading name for domestic companies acting on international projects, and June Snemyr is a key name for CCS projects. Bendik Christoffersen spearheads the renewable energy and infrastructure department, which is increasingly active on matters arising out of the energy transition. Gunnar Martinsen is a seasoned advisor to domestic and foreign power companies on relevant regulatory frameworks. Snorre Valdimarsson is a key point of contact for a number of the firm’s clients.
Responsables de la pratique:
Bendik Christoffersen; Christian Hals
Autres avocats clés:
Pål Lieungh; June Snemyr; Gunnar Martinsen; Snorre Valdimarsson; Anna Serina Natvik
Les références
‘Excellent oversight of all relevant matters, even on truly complex matters. Always available and highly efficient.’
‘Thommessen’s renewable energy team stands out for its exceptional professionalism, deep sector knowledge, and consistent delivery of high-quality legal advice. The team is not only highly responsive and reliable, but also proactive in identifying risks and opportunities, which significantly strengthens our strategic decision-making.’
‘Bendik Christoffersen is a standout partner—highly skilled, commercially sharp, and consistently reliable. His advice is clear, strategic, and always adds value. What sets him apart is his ability to simplify complexity and deliver practical solutions. Working with Bendik and his team is always a smooth and professional experience.’
Principaux clients
Green Investment Group
Vergia AS/Swiss Life Asset Managers
Eidsiva Energi AS
Lyse AS / Lyse Energi AS
Nordkraft AS
Haugaland Kraft AS
Tonstad Vindpark AS
Zephyr AS
Haram Kraft AS
Lutelandet Energipark AS
Glitre Energi AS/Å Energi AS
Vardar AS
Sira-Kvina Kraftselskap
Småkraft AS
Tysvær Vindpark AS
Østfold Energi AS
Yve AS (incl Kraftriket AS and Polar Kraft AS)
HitecVision
Østfold Energi AS
Epex Spot
Encavis AG
Aker BP ASA
Northern Lights JV DA
Deep Wind Offshore AS
Holmaneset H2 AS (Fortescue Future Industries International Pty Ltd.)
PolarDC Services Ltd.
Cadre AS
SWEN Capital Partners
InfraVia Capital Partners
Fu-Gen AG
Solgrid AS
Scatec ASA
Endra AS
Havfram AS
Cloudberry ASA
Sunday Power AS
Fenix Repower AS
Otovo ASA
Endra AS
Aneo AS
Eviny AS
Elmera Group ASA
Bain Capital
Vireo
BP International
Equinor
Kongsberg Gruppen
Seadrill
DOF Group
Island Offshore
Island Drilling Company
Vard Group AS
Odfjell Drilling
Transocean
Shelf Drilling
BW Offshore
Wellesley Petroleum
HAV Group ASA
TTC Norge
DNV GL
AS Nymo
BW Energy
Japex Norge AS
Longboat Energy plc
Harbour Energy
DNO ASA
Hav Energy AS
Autentik AS
Petoro AS
Northern Lights JV DA
TotalEnergies E&P Norge AS
Optime Subsea AS
ECOnnect Energy AS
OMV Norge
Azane Fuel Solutions AS
Kabal AS
Ventura Offshore Holding Ltd.
Sar Group
Marine Aluminium AS
Worley Rosenberg
Principaux dossiers
- Advised Lyse Produksjon AS on the acquisition of Egersund wind farm from Luxcara, marking the start of the Lyse Group’s strategic step into owning, operating and developing onshore wind power.
- Advised PolarDC Services on the project development of its data centre project in Drangedal, Norway, including on the financing of the first (and second) phase of the construction, and the acquisition of powered land, grid connection, etc.
- Advised Northern Lights JV on its 15-year deal with Swedish district energy provider Stockholm Exergi for the cross-border transport and storage of 900,000 tons of biogenic CO2 emissions annually, starting in 2028.
- Advised DNO on its USD 1.6bn acquisition of Sval Energi from HitecVision.
- Advising Optime Holding AS on the sale of Optime Subsea AS to Halliburton.
Wiersholm
Wiersholm‘s oil and gas practice is regularly engaged by large E&P companies operating on the Norwegian Continental Shelf. Kjetil Stensvik and Torkjel Kleppo Grøndalen co-lead the practice, with Stensvik combining expertise in contract matters and knowledge of development projects, and Grøndalen adding expertise in the regulatory aspects within the oil and gas industry. The department is equally well-placed to advise clients in the traditional renewable energy space. For domestic and international clients, Jon Rabben is a go-to name for acquisitions, regulatory issues, and dispute resolution. Inge Ekker Bartnes is an active adviser on deals within the space, including M&A and financing. The two jointly lead the group.
Responsables de la pratique:
Inge Ekker Bartnes; Jon Rabben; Kjetil Stensvik; Torkjel Kleppo Grøndalen
Autres avocats clés:
Thomas G. Naalsund
Les références
‘Strength is a deep industry knowledge, both on regulatory and commercial aspects. Understands our business.’
‘Wiersholm have best in class expertise across all relevant business areas and delivers high-quality advice that has solved our question at and exceeded expectations in all our interactions.’
‘We are also very satisfied with our contact Kjetil Stensvik’s ability to understand our business and what we need. He has the ability to both bring in the correct expertise and, at the same time, do this in an effective manner that limits the hours spent on the project. This is a combination that not all masters in the legal industry have.’
Principaux clients
Statkraft AS/Statkraft Energi AS
The Ministry of Energy
NTE AS/NTE Energi AS
TrønderEnergi AS/ANEO AS
Equinor ASA
Hydro Energi AS
Kyoto Group AS
Green H AS
Inherit Carbon Solutions AS
Infranode AB
Å Energi AS
Dalane Energi AS/Dalane Kraft AS/Dalane Vind AS/Enida AS
Infracapital Ltd/ Recharge AS/Thermalstore Norway AS
PATRIZIA Infrastructure
Østfold Energi AS/Siso Energi AS
Istad AS/Istad Nett AS/Istad Fiber AS
Kymppivoima Hydro Oy
Skagerak Energi AS
Mainstream Renewable Power Limited
Ringerikskraft AS/Ringerikskraft Produksjon AS
Statnett SF
Suomen Voima Oy (SV Vattenkraft AB)
Troms Kraft AS
Kinect Energy AS
Vauban Infrastructure Partners
Abrdn plc.
Siso Energi AS
Northern Lights JV DA (Equinor, Shell and Total)
Gassco AS
Equinor ASA (OSE: STL)
Petoro AS
ConocoPhillips Skandinavia AS
TotalEnergies EP Norge AS/TotalEnergies S.A.
ORLEN Upstream Norway AS
Norwegian Ministry of Energy (ME)
OKEA ASA
DNV-GL Group AS
DNO ASA
Bangchak Corporation PCL
Concedo ASA
North Sea Infrastructure AS / PKA AIP A/S
Danske Bank A/S
BNP Paribas
Skandinaviska Enskilda Banken AB
Nordea Bank Abp, filial i Norge
Kistos Energy (Norway) AS
INPEX Idemitsu
Principaux dossiers
- Advising Equinor on its strategic partnership with Vårgrønn.
- Advising Orkla ASA on the divestment of its entire hydropower portfolio in two separate transactions.
- Advising Locus Energy AB in connection with its acquisition of a 158 GWh hydropower portfolio across Norwegian price areas NO2 to NO5.
- Advised Equinor Energy AS and ConocoPhillips Skandinavia AS, as participants in the Breidablikk Unit, in a lawsuit brought by another partner in the unit, Vår Energi, against the Norwegian Government, the clients, and Petoro.
Wikborg Rein
Noted for ‘outstanding legal expertise with a deep understanding of the energy sector’, Wikborg Rein‘s renewable energy practice is regarded for its work in the onshore wind space. Global head of the department, Tormod Ludvik Nilsen, is engaged by domestic and international clients on regulatory matters, financing, and project development. The team benefits from Caroline Skaar Landsværk‘s aptitude across regulatory, development, and contractual matters, and Christian James-Olsen‘s expertise in CCS project development and contracts. The oil and gas department is jointly headed by Cathrine B. Hetland and Aadne Haga. Under the leadership of the duo, the team acts on disputes within the sector, as well as on CCS mandates.
Responsables de la pratique:
Tormod L. Nilsen; Caroline Skaar Landsværk; Christian James-Olsen; Cathrine Hetland; Aadne Martin Haga
Les références
‘Commercially oriented. In-depth knowledge. Solution-driven.’
‘Hands-on, easy to reach, respect tight deadlines, solution-oriented.’
‘Competent and flexible team.’
Principaux clients
Renewables Norway
Cloudberry Clean Energy ASA
EnBW
Stadtwerke München GmbH
Eidsiva Energi AS
Hafslund AS
Troms Kraft AS
ASKO Fornybar AS
Luxcara GmbH/ Hyfe Wind
Norfund
Eviny
Eidsiva Hafslund Vind DA
OdelEnergy AS
Hydro REIN AS
La Française de l’Energie
Helganes Kraft AS
Landsvirkjun
Norwegian Petroleum Tax Office
The Norwegian State, represented by the Ministry of Trade, Industry and Fisheries
Naftogaz of Ukraine
Gas Transmission System Operator of Ukraine
Seacrest Petroleo
Transocean
Macro Offshore
COSL Drilling
Odfjell Drilling
Eldorado Drilling
Floatel International
Northern Lights
Beerenberg
Palfinger Marine
MacGregor
Framo
IKM Testing
Fjord Base Group
Norwegian Petroleum Tax Office
The Norwegian State, represented by the Ministry of Trade, Industry and Fisheries
Naftogaz of Ukraine
Gas Transmission System Operator of Ukraine
Seacrest Petroleo
Transocean
Macro Offshore
COSL Drilling
Odfjell Drilling
Eldorado Drilling
Floatel International
Northern Lights
Principaux dossiers
- Advised Naftogaz of Ukraine in ICC Arbitration against PJSC Gazprom of Russia, securing an award of USD 1.4 billion in a high-profile dispute concerning gas transit through Ukraine.
- Assisted the Norwegian State, represented by the Ministry of Trade, Industry and Fisheries, on the block sale of its remaining 6.11% stake in Aker Solutions ASA, with comprehensive legal support including negotiations, documentation, and regulatory compliance.
- Advising COSL Drilling Europe AS and COSL Offshore Management AS on a continuous basis in commercial, strategic and legal matters related to operations on the Norwegian and UK Continental Shelf, including contract negotiation and dispute management for multiple high-value rig contracts.