Arntzen Grette adopts a multidisciplinary approach to its compliance and investigations offering, covering compliance, investigations, and enforcement. The firm is particularly active in regulatory enforcement and investigations in the energy, industrial, and technology sectors. Practice head Berit Svensli Solseth has particular expertise in the green industrial transition, with knowledge of sustainability frameworks in cross-border projects. Deputy head Sarah Haugvad Andresen covers ESG compliance, regulatory risk management, and corporate investigations. Fredrik Berg joined the team in January 2026 from Fend Advokatfirma.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘Great team. Knowledgeable and a pleasure to work with.’
Key clients
- Hampiðjan Group
- Statsbygg Y
- Equinor Energy AS Y
- Nyhavna Utvikling AS
- Okea ASA
- Trondheim Renholdsverk AS
- The SINTEF Foundation
- TrønderEnergi AS
- Strise AS
- Toyota Norge AS
- Aviation Fuel Services Norway AS Y
- Certas Energy Norway
Work highlights
Advised a large energy company on compliance and legal risk surrounding the electrification of offshore oil installations, ensuring legal defensibility and timely execution within a complex regulatory and politically sensitive framework.
Practice head
Berit Svensli Solseth; Sarah Haugvad Andresen
Other key lawyers
Partner Fredrik Berg