Quick Facts

1,656,978 kWh saved annually

All savings achieved through optimisation of the HVAC and BeMS system

Technology, expertise and process have all been major contributors to the savings achieved

28% reduction in Gas (kWh)

25% reduction in Electricity (kWh)

< 5 Months ROI

< 5




overall kWh 



This 10,000 m2 facility, located in the West Midlands provides commercial office space, a call centre and comms rooms for one of the UK’s leading banks. The facility was built around 20 years ago and accommodates around 2,000 staff daily. The site has no submetering and relied on the fiscal half hourly meters to prove savings. The HVAC system was being controlled by a 15 year old Trend IQ1 BeMS (Building energy Management System).


The facility is part of wider portfolio that is managed under an energy performance contract by one of the UK’s leading facility management companies. The site was consuming around 6.4 GWh annually of energy and while the FM company had already done a good job at reducing consumption by around 13%, Optimised Buildings identified further saving opportunities.


Optimised Buildings were asked to assess the facility to determine if further energy savings could be achieved through their optimisation proposition. 

The HVAC system consumed 40% of the electricity and 95% of the gas consumption at this facility. Optimised Buildings undertook a detailed energy audit and determined a further 500,000 kWh (8% of total kWh’s consumed) could be saved over a 12 month period. These savings were all identified to come from HVAC and BeMS optimisation.


Optimised Buildings were then contracted by the FM company to deliver the savings and challenged to exceed these projections of 500,000 kWh a year.

46% of the sites energy was being consumed by Heating, Ventilation and Air Conditioning (HVAC).


The solution consisted of both technology and expertise to achieve the savings.


Following a site assessment mechanical, electrical and controls issues were identified and a plan put in place to resolve these issues, all of which were contributing to excessive energy consumption. Controls strategies were reviewed and corrected along with time schedules, setpoints and runtimes.


Remote communications were set-up to the site which enabled data to be extracted from the Trend BeMS system on a 15 minute interval. This data was then pushed to the cloud, which feeds the Optimised Analytics platform where fault diagnosis and detection algorithms identifies and tracks the performance of assets, equipment and systems and quickly identifies anomalies in plant operation saving energy and maintenance costs.


The continuous monitoring and analysis undertaken by the Optimised Bureau team ensures that savings are not only delivered, but they are maintained long term. The Optimised Analytics data combined with aM&T data has enabled our energy analysts to identify anomalies with the operation of the HVAC / controls and make energy conservation measures recommendations. This is fed back to the FM/Energy team to rectify the issues in a timely manner and the results analysed.

Combining the technology, expertise and process has resulted in significant energy savings being achieved throughout this facility.

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Following a 24 month optimisation programme, 1,656,978 kWh of annual savings is now delivering an ROI of less than 5 months.


Further savings opportunities have been identified and savings are expected to increase further over the coming months.


The net result is a 26% saving for the client.

Financial HQ Results

If you are to create better returns from your property portfolio, then minimising operational costs is essential. Expert building and utilities management can help you do that, yet cost efficiencies need to be balanced against the need to provide a quality space and environment to tenants that ensures you meet your responsibilities, while creating high occupancy, as well as cost-efficiency. At Optimised Buildings we have pulled together best of breed technologies and services to bring many aspects of managing energy for real estate owners and operators under a single umbrella which we strongly believe will help you on your journey.

About Optimised Buildings

Discover our tailored approach to your energy needs 

Contact or call us on +44(0)333 370 2021

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109-112 Lancaster House,

Amy Johnson Way



01253 209000


Kings Court,

87 High Street

Nailsea, Bristol

BS48 1AW

01275 859100


1 Ivanhoe Office Park,

Ivanhoe Park Way,

Ashby de la Zouch, Leicestershire LE65 2AB

0333 370 2021


The Oast

62 Bell Road


Kent ME10 4HE

0333 370 2023

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