ISO 50001
ISO 50001 is the international standard for energy management systems. It gives organisations a framework to establish, measure and continually improve energy performance, and can serve as a compliant route for schemes such as the UK's ESOS.
ISO 50001 sets out requirements for an energy management system based on a plan-do-check-act cycle: establish a baseline, set objectives, implement measures, monitor results and improve. Certification is voluntary but widely used to structure energy programmes and to demonstrate compliance under regulations like ESOS.
Related terms
Energy Management System (EnMS / EMS)
Related guides
ESOS compliance: a plain-English guide
What the UK Energy Savings Opportunity Scheme requires, who qualifies, what an assessment involves, and how to turn it into real savings.
Factory decarbonization: a practical roadmap
A sequenced, no-regrets roadmap for cutting industrial emissions — efficiency first, then electrification and fuel switching, then the hard residual.