£7.3M saved across 460 stores for uk supermarket retailer

BEMS OPTIMISATION RESULTS IN SIGNIFICANT ENERGY SAVINGS ACROSS RETAIL PORTFOLIO

22%

ENERGY SAVING OF HVAC

<7

MONTHS ROI

ABOUT

THE CLIENT

Ranked in the top four UK supermarket chains, this food retailer serves customers nationally throughout the UK from almost 500 stores and an online home delivery service. Every week, 11 million customers pass through the doors and employ over 110,000 staff across the business.

Our client has a Trend BEMS (Building Energy Management System) across their retail portfolio, that controls HVAC (Heating, Ventilation and Air Conditioning), lighting and hot water. Half hourly meter data from both gas and electricity was available to baseline and manage the stores energy performance.

INDUSTRY

SERVICES DELIVERED

Challenge

MAXIMISING EFFICIENCY OF EXISTING BUILDING ENERGY MANAGEMENT SYSTEMS

Optimised were commissioned to undertake a trial on 4 pilot stores to ‘optimise’ the BEMS and monitor the potential impact on energy savings that this would generate. This optimisation was to be undertaken through maximising the efficiency and operation of existing assets (specifically the BeMS/HVAC), with no additional capital equipment installed. The trial was undertaken for a period of 4 weeks, where a saving of 51% on gas and 6.5% on electricity was achieved, compared with the same month of the previous year. The outcome of this trial led to our client entering into a contract with Optimised to ‘optimise’ 450 stores over a 6-month period and once optimised, to deliver a managed remote optimisation service, to ensure savings were maintained for the longer term.

solution

OPTIMISING BEMS CONTROL STRATEGIES TO STORE PERFORMANCE SPECIFICATION

The first objective was to upload strategy from the Trend BEMS system and ‘optimise’ the control strategies. Over a 6-month period, we pulled together an project team of engineers, to meet both the aggressive technical goals and programme that had been set before us. Once the software had been optimised for a specific store, our commissioning team then moved in. They uploaded the software while on site at the specific store and recommissioned the BEMS controllers, addressing any faulty sensors, equipment in hand, wiring issues and much more besides. At the peak of the project, we were commissioning 80 stores a month with 17 dedicated engineers.

While the software was being optimised, along with the onsite commissioning, our team of remote optimisation engineers were importing the 270,000 data points into the new Trend IQ Vision platform, setting up around 50,000 analytics points and pulling in 1,500 half hourly fiscal meters into the Energy Analysis platform. The fiscal meters were already available which negated any integration requirements, this half hourly data was logged and ‘pushed’ to our cloud-based Automatic Monitoring and Targeting software. This created the transparency and baseline data to effectively monitor and measure the impact of the building optimisation deployed.