Amid an unprecedented European heatwave, a Paris court ruled today that France’s biggest fossil fuel firm TotalEnergies has not fully accounted for its contribution to climate change or identified all the ways it could limit it. A group of non-profit organisations and local authorities filed the claim in 2020 under France's then-new duty of vigilance law. This requires all large businesses headquartered in France and international corporations with a significant presence there to set out a clear plan to prevent human rights violations and environmental damage – even among their subsidiaries. “It’s a very big win for the whole climate movement,” said Justine Ripoll, head of campaigns for Notre Affaire à Tous, one of the NGOs that brought the claim.She said the judges made clear that companies have climate obligations reflecting their impact on global emissions, and added that the ruling shows "lobbying to undermine legislation won’t have the impact corporations could expect."The ruling marks another legal victory for climate activists, after the International Court of Justice issued a landmark advisory opinion last year finding that countries can be held responsible under international law for breaching their climate obligations, including by expanding fossil fuel production. In May, the UN General Assembly backed the ruling and called on countries to comply with it.