Discussion across the industry is focussing on closing the performance gap between design intentions and real operational energy use. The Chartered Institution of Building Services Engineers (CIBSE) has just issued new guidance on how to address operational energy use at the design stage.
TM54: Evaluating operational energy performance of buildings at the design stage is now available from the online CIBSE Knowledge Portal.

David Cheshire, lead author, regional director of Sustainability, AECOM said: 'The aim of the guidance is to enable designers to make better estimates of operational energy, identify the range of possible outcomes and therefore show how designs can be improved to deliver on the predictions.'

CIBSE will celebrate the launch of this publication with a special briefing to members at Prince Philip House, London on 25 September. The event will also be broadcast to all as a webinar.

All CIBSE guidance is available free of charge to its members, or can be ordered by non members: www.cibseknowledgeportal.co.uk