investment recovered through energy cost savings.
‘We expect to recoup capital costs in each building within three years through guaranteed energy cost savings,’ says Snoxall. ‘EP&T offers guaranteed reductions in base-building energy use (common areas and shared services) of at least 10% in each building in the coming years, through continuous improvement. We expect it to result in greater savings, based on our York House pilot.’ As part of the specification process when implementing the Edge system, British Land developed a stringent brief with well- defined objectives. These included: l Providing a comprehensive data reporting system for key energy users
l Introducing a remote monitoring service that identifies energy saving opportunities quickly
l Optimising energy efficiency in British Land controlled common areas and shared services
l Automating the occupier billing process l Offering a scalable system across multiple buildings, with online access.
Edge gives access to energy data through extensive sub-metering, with a breakdown of consumption by occupiers, floor levels and most significant types of usage, from small power and lighting to major pieces
British Land offers to fund energy reviews in areas where office occupiers are committed to energy reductions
of equipment, such as lifts and boilers. Electricity, gas and water data is uploaded automatically to a central system online every 15 minutes, and a remote diagnostic service identifies opportunities to optimise consumption, providing regular alerts and reports that quantify cost-saving opportunities. It also details measures completed to improve efficiency. The British Land team works closely with
the building management team to achieve the projected reductions, with the on-site engineering manager actioning the energy saving recommendations highlighted by the remote diagnostic service. Energy efficiency measures introduced as a direct result of the monitoring system and optimisation process include:
40 CIBSE Journal September 2012 Encouraging best practice
As well as working in partnership with its building occupiers to reduce energy, British Land is a strong believer in working collaboratively with its commercial property peers on sustainability issues and is a founder member of the Better Buildings Partnership (BBP). The BBP includes London’s leading commercial property owners and allied organisations, supported by the Mayor of London and the Greater London Authority. Its aim is to develop solutions to improve the sustainability of London’s existing commercial stock and achieve substantial CO2 savings in support of the Mayor’s target of 60% by 2025. British Land chaired a BBP working group,
which developed a Green Building Management Toolkit to help owners, occupiers and building management work together more effectively to reduce energy, water and waste.
The developer is also working with University
College London, CIBSE, Verco and the Usable Building Trust to use its data to help to calibrate, establish and introduce Landlord Display Energy Certificates (DECs) on a voluntary basis. British Land has completed a prototype Landlord DEC at York House using the Landlord energy statement - tenants energy review (LES-TER) methodology, and has undertaken LES-TER assessments in 16 other multi-let office buildings.
www.cibsejournal.com
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