The EU’s General Court has rejected a legal challenge aimed at reversing the European Commission’s decision to categorize forest biomass energy as a sustainable investment within the bloc’s green finance framework. The court’s decision, issued on 18 March 2026 dismissed an attempt to annul a Commission ruling from July 2022, which had turned down a request for an internal review of Delegated Regulation (EU) 2021/2139. This regulation set the technical criteria for determining which forestry management and bioenergy practices can be regarded as environmentally sustainable. The plaintiffs, including Robin Wood and six other environmental NGOs, contended that the Commission’s designation of forestry and forest bioenergy as sustainable was illegal and violated EU legislation, particularly the Taxonomy Regulation. These rulings affirm that the Commission possesses significant discretion in establishing and implementing the taxonomy’s technical criteria, allowing politically sensitive sectors like bioenergy.