by 86 000 kWh, equivalent to €16,000 ($20.7k). BSI Group published a case study showing that Sheffield Hallam University in the UK reduced its carbon emissions by 11 per cent once it was certified to ISO 50001. This yielded annual savings of over £100,000 ($160.7k). In December 2013, the UK Department of Energy and Climate Change became the first Central Government department to achieve certification against the requirements of ISO 50001, leading by example with the belief that structured energy management will lead to substantial energy reductions and thus mitigate the effects of climate change. ISO has stated that it believes in due course the standard could influence up to 60 per cent of the world's energy use. ISO 50001 and ISO 14001 ISO 50001 is data driven and focuses on energy performance improvement, while ISO 14001 provides a more qualitative look at all significant environmental impacts of an organization. Both standards can be implemented individually or they can be integrated with each other, or with any other ISO management system standards, such as ISO 9001. If energy is an organization's most significant environmental impact, ISO 50001 might be more appropriate than ISO 14001. Many organizations will manage energy successfully via ISO 14001, but especially in organizations where energy is a significant cost, ISO 50001 provides a more specific framework that enables organizations to apply a sharper focus to energy efficiency. History Further reading Johannes Kals: Betriebliches Energiemanagement – Eine Einführung, Kohlhammer Verlag, Stuttgart 2010, Thomas Elliott Welch: Implementing ISO 50001 – While integrating with your environmental management system, TriMark Press, Inc., 2011. Eccleston C., March F., and Cohen T., Inside Energy: The Handbook for Implementing an ISO 50001 Energy Management Systems, CRC Press Inc. 300 pages (2011). References External links ISO 50001 - Energy Management - ISO.org 50001 Energy economics