August 2023

Executive summary

Climate change presents a pressing issue. As efforts to combat it continue, climate coalitions have emerged as a popular way to pool resources, share ideas and foster innovation.

However, the viability and future success of coalitions have come under scrutiny due to concerns over antitrust laws and against a rising tide of anti-ESG sentiment and climate-related litigation.

This report explores the relevant issues and their significance to the current business environment and the wider climate transition agenda.


  • Climate action coalitions are progressively forming to accelerate the transition to net zero.
  • Recently, the alarm has been raised that climate coalitions — including the Net-Zero Insurance Alliance (NZIA) — could be seen to violate anti‑trust laws, by making decisions that unfairly distort or penalise markets.
  • There are calls for supervisors to offer explicit guidance on how climate coalitions should operate, and to offer "safe harbour" for certain agreements.
  • There's a renewed emphasis on United-Nations-convened climate alliances to prioritise a "just transition" for all stakeholders.
  • It's a balancing act that will become more challenging as we move closer to Race to Zero's mid-point targets in 2030.
  • Meanwhile, the UN Environment Programme (UNEP) reiterates the "fundamental and urgent need" for continuing collaboration to tackle the climate crisis.
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CONDITIONS AND LIMITATIONS Gallagher's global operations, including a network of correspondent brokers and consultants, offers client-service capabilities in more than 130 countries around the world. This report and supporting information is not intended to provide legal or financial advice and reflects our understanding as of July 2023. It should not be regarded as a comprehensive statement of the law and/or market practice in the regions covered. You should not act upon information in this publication nor determine not to act, without first seeking specific legal and/or specialist insurance and risk management expertise. Should you require advice about your specific insurance arrangements or claim circumstances, please contact your Gallagher account representative.

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