Climate Litigation News and Case Updates | June 29 – July 3, 2026

This page provides the latest climate litigation news, tracking key court decisions, new filings, and procedural developments from climate change lawsuits around the world. Updates are added on a rolling basis through the Climate Court Litigation Tracker, which monitors significant climate-related cases across national and international courts, including climate lawsuits, climate-related environmental litigation, biodiversity litigation, greenwashing cases, and corporate climate accountability claims.

Below are the latest climate litigation developments from this week, organised by date to reflect when rulings were issued or cases were filed. This page is updated daily as new climate and environmental cases emerge globally. Earlier updates and archived coverage are available in the Resources section.

June 29

No new updates recorded.

June 30

United States:

• Sierra Club Loses Appeal Over County’s 2024 Climate Action Plan: San Diego Climate Plan, CEQA, writ discharge

• Indiana Law Blocked Before Taking Effect: Proxy advisers, anti-ESG laws, First Amendment

July 1

New Zealand:

• New Zealand Ombudsman Faults Prime Minister’s Office Over Withheld Smith v Fonterra Climate-Litigation Briefing: Climate litigation transparency, corporate influence, Smith v Fonterra

United States:

• Second Circuit Upholds New York Building Electrification Laws Against Federal Preemption Challenge: Building electrification, EPCA preemption, state climate authority

• Louisiana Groups Challenge Marais Pipeline Permit Over Cumulative Climate and Coastal Impacts: Cumulative climate impacts, LNG infrastructure, coastal wetlands

  
  

July 2

Nigeria:

• NGOs Sue TotalEnergies in France Over Nigerian Oil Asset Divestment and Niger Delta Clean-Up Concerns: TotalEnergies, Niger Delta, Duty of Vigilance

July 3

Canada:

• Proposed Class Action Challenges Montreal Municipality’s Response to Climate-Driven Flood Risk: Climate adaptation failure, municipal liability, urban flood infrastructure

United States:

• Lawsuit Challenges Barstow’s Approval of Major Diesel Rail Facility Over Climate, Air Pollution, and Habitat Impacts: CEQA challenge, diesel rail emissions, environmental justice and climate pollution

More detailed summaries, original pleadings, and real-time tracking are available to subscribers through the Climate Court Litigation Tracker. As climate litigation continues to shape corporate behaviour, regulatory enforcement, and climate-risk governance, staying informed about legal developments has become essential for legal practitioners, businesses, investors, civil society organisations, and policymakers worldwide.

Full case analyses, original pleadings, and real-time tracking are available to subscribers through the Climate Court Litigation Tracker. As climate litigation continues to shape corporate behaviour, regulatory enforcement, and climate-risk governance, staying informed about legal developments has become essential for legal practitioners, businesses, investors, civil society organisations, and policymakers worldwide.