ESG and Corporate Sustainability

ESG and Corporate Sustainability

Sustainability and ESG regulations concern companies of all sizes – either directly or indirectly.

Sustainability is the true success factor of modern business. It ensures continuity of operations and transcends a company’s strategy, value chains and business practices. The regulatory framework of corporate sustainability is taking shape at a rapid pace, and evolving regulations concern companies of all sizes – either directly or indirectly.

The ESG and corporate sustainability service at Castrén & Snellman is the leading ESG practice among Finnish law firms. Our service is built around a multi-disciplinary approach that brings together legal expertise across all three pillars of ESG – environmental, social and governance – to deliver integrated advice. Our clients include a wide range of companies from family-owned businesses to listed companies. Our particular focus in ESG advice includes mergers and acquisitions, contract negotiations, and investigations.

Comprehensive and strategic ESG advisory

We conduct ESG due diligence reviews and provide analysis of the reviewed company’s ESG practices and risk management. We monitor the latest developments in ESG regulation for our clients and provide training in the legal aspects of corporate sustainability that is under continuous change.

As a member of the Net Zero Lawyers Alliance, we are committed to support our clients with extensive legal services they need in their transition to net zero.

We integrate our ESG knowhow across all services in our firm. Our experts can assist you in various areas:

  • ESG, compliance, corporate governance and management liability

  • Supply chain due diligence

  • ESG-related investigations
  • ESG in commercial contracts
  • Sustainable transactions and ESG due diligence
  • Sustainable finance
  • Green and just transition projects
  • Regulation and litigation on green and sustainability claims
  • Environment, Infrastructure & Natural Resources
  • Sustainability-linked competition law analysis and procurement
  • Advice on EU taxonomy

Latest references

We acted as legal adviser to Banyan Software on its acquisition of Carus Ferry, a Finland-based provider of reservation, check-in and port operations software for ferry and passenger shipping operators. The acquisition further strengthens Banyan Software’s presence in the Nordic region while providing Carus with a long-term partner to support its continued growth and development. Carus was founded in 1998 and is headquartered in Mariehamn on the Åland Islands, Finland. The company develops mission-critical software for ferry, cruise and passenger shipping operators, covering the full passenger journey from booking and ticketing to capacity management, check-in and boarding. Carus also provides port automation, onboard sales systems and business information tools. The company serves approximately 30 operators across four continents and is the largest vendor by customer count in ferry reservation and departure control. Banyan Software is an acquirer and long-term operator of mission-critical software businesses serving specialised industries. Founded in 2016, Banyan follows a buy-and-hold-for-life approach and supports the long-term growth and development of its portfolio companies. Banyan operates more than 130 portfolio companies across North and South America, the United Kingdom, Europe and APAC. Following the acquisition of Carus, Banyan operates three businesses in the Nordic region.
Case published 20.10.2026
We advised Move Energy as an investor in connection with the combination of 3North Partners Plc and Steady Energy Oy and the related private placement and initial public offering of the combined company on Nasdaq First North Growth Market Finland. In connection with the transaction, 3North Partners received approximately EUR 69.8 million in investor commitments from a group of institutional and other investors, including Move Energy, to fund the combined company. Steady Energy is a Finnish nuclear technology company developing a new generation of small modular reactors (SMRs) particularly suited for district heating. Its LDR-50 reactor is designed to provide cities and utilities with a scalable and low-carbon alternative to combustion-based heat production.
Case published 19.10.2026
We advised Efima Oyj on the sale of its AI business to Better Care Technologies Oy. The transaction included Efima’s Moiva AI platform developed for the care sector, the related technology and brand, customer contracts, and the experts working in the business. Efima is a Finnish digital company that supports the sustainable growth of large and mid-sized companies by streamlining their business processes and by creating competitive advantage through the innovative use of artificial intelligence and data. The company has nearly 200 experts based in Helsinki and Tampere. 
Case published 21.9.2026
We advised Neoen Renewables Finland Oy, part of the French Neoen Group, in its sale of a data centre project to a consortium consisting of international data centre developers and operators. This marked Neoen’s first data centre development project in Finland. Founded in 2008, Neoen is one of the world’s leading independent renewable energy producers. The company operates in 15 countries. It develops, finances, builds, owns, and operates solar power plants, wind farms, and battery storage systems. Neoen Group is owned by global alternative asset manager Brookfield Corporation.
Case published 17.9.2026