To encourage the installation of energy sub-metering to facilitate the monitoring of operational energy consumption. To enable managers and consultants post-handover to compare actual performance with targets in order to inform ongoing management and help in reducing the performance gap.

• Allow managers and occupants to monitor operational energy consumption by fuel and by end-use categories to identify poor performance and changes in consumption patterns.
• Allow owners, managers and occupiers to take steps to minimise the performance gap between predicted and actual energy consumption.
• Allow the management of energy costs and identification of areas of inefficient operation, system deficiencies and building management issues.
• Allow comparison between the performance of new and existing building properties.

‘You can’t manage what you do not measure’ — through detailed energy metering and monitoring, owners and facilities managers are able to understand how their building is performing in greater detail and take steps to improve deficiencies. Poor energy monitoring and management is the biggest single contributor to higher than expected energy use in operational buildings and can present major opportunities to reduce energy consumption. Appropriate actions such as changing practices and procedures, cutting wastage and managing energy use can reduce operating costs, energy consumption and carbon emissions. Appropriate strategies for metering can also ensure the building owner is better informed of the usage figures for the building to optimise energy supply contracts and renegotiate new ones1Schneider Electric. Designing a metering system for small and medium sized buildings. London, Schneider Electric; 2010. as well as managing facilities management contractors and comparing performance across a property portfolio.