The document discusses how Northern Rail uses ISO standards to effectively manage its energy and environmental performance. Key points: - Northern Rail achieved ISO 50001 certification in 2011 to improve energy efficiency and reduce costs. This required leadership buy-in and reporting energy use/impacts to the board regularly. - The certification distributed responsibility for energy reduction across directorates and site managers, increasing engagement and impact beyond just the environmental team. - Northern Rail saw a 15% reduction in energy use between 2009-2015 and continual improvement projects across departments. - Their effective EMS and sustainability efforts led to multiple awards between 2013-2015.