Spain has enacted new legislation requiring large companies to disclose greenhouse gas emissions and to produce formal five-year decarbonization plans. As of 2025, firms must report Scope 1 and Scope 2 emissions, and by 2028, the largest ones will also need to include Scope 3 emissions.

The law targets businesses already under Spain’s national implementation of the EU Non-Financial Reporting Directive – those with over 250 employees and either assets above €20 million or revenues above €40 million – plus certain public bodies, totaling about 4,000 entities. From 2026 onward, organizations must publish climate transition strategies with double materiality assessments, clear emissions targets, and concrete action plans.