Siren Skalstad Ellensen
Siren has extensive experience with mergers and acquisitions (M&A), equity transactions and re-organizations, assisting Norwegian and international companies (listed and non-listed) with legal advice, especially within the renewable energy sector and in infrastructure transactions.
She also assists in general with energy law and corporate law advice to clients and has a great deal of experience as project leader in complex transactions, both national and international. Siren also has experience from VAT advice in Deloitte.
Member of the Norwegian Bar Association.
Recommended for Electricity and Renewable Energy by The Legal 500, 2026.
'With deep expertise in M&A, equity transactions, corporate reorganisations, and regulatory matters, Siren Skalstad Ellensen at DLA Piper is a key advisor to domestic and international clients on important renewable energy and sustainability matters.
In a landmark transaction, Ellensen led the team in representing venture fund RunwayFBU and investment manager Fred Olsen Investments as minority shareholders in the sale of Celsia to ISS. The deal supports the company, an impactful provider of SaaS solutions for corporate sustainability and green reporting, in building its offering.
Ellensen makes a key commitment to supporting sustainability and ESG objectives within the energy sector, participating in the Norwegian Association for Energy Law and the JUC Energy group. Passionately advocating for gender equality in the sustainability space, Ellensen serves as a board member of the Women in Renewable Energy organisation and the Women’s International Shipping & Trading Association, which both seek to leverage gender diversity in creating a sustainable future.'
Ranked in The Legal 500 Green Ambassadors: Europe 2025.
The ‘dedicated and very competent team’ at DLA Piper demonstrates expertise across M&A, corporate, and contentious matters within the renewable energy segment.
Siren Skalstad Ellensen leads on corporate and regulatory matters concerning energy transition players.
Recommended for Electricity and Renewable Energy by The Legal 500, 2025.
‘Siren Skallstad Ellensen has extensive experience advising domestic and international renewables and infrastructure players on M&A, equity transactions, and reorganisations.’
Recommended for Electricity and Renewable Energy by The Legal 500, 2024.
‘The team was further strengthened in 2021 with the addition of Siren Skalstad Ellensen, who has extensive M&A experience within the renewables sector.’
Recommended by The Legal 500 EMEA Green Guide, 2023.
