1) Northern Rail obtained ISO 50001 certification for its energy management system to meet the requirements of the UK's Energy Savings Opportunity Scheme (ESOS), which mandates energy audits for large enterprises.
2) Certification provides benefits like a systematic approach to energy management, senior management buy-in, focus on energy reduction as a company objective, and continual improvement resulting in reductions in Northern Rail's energy use.
3) The presentation discusses how Northern Rail established energy performance baselines, monitored key energy uses, implemented responsible driving and efficiency programs, and achieved recognition for its sustainability efforts.