
National rules3 min read
ESOS phase 4: what the 2026 amendment regulations change, and the new guidance
New ESOS rules came into force on 22 July 2026 and the Environment Agency published its phase 4 guidance on 30 July. A third progress update, savings reported per measure, no more DEC or Green Deal routes, and an easier path for ISO 50001. The dates and the changes in one place.























