The Challenge

This case was a classic example of how the straight forward need for an energy performance certificate (EPC) can lead on to more substantial changes and improvements for the client. In this case, ASI required an EPC model and recommendations on the changes needed to improve the building’s existing poor energy rating to achieve a minimum “E” rating, to ensure compliance with the Minimum Energy Efficiency Standard (MEES) legislation.

Our Approach

EVORA Global was able to confirm the existing poor EPC rating was correct as well as the various electrical consumption ranges by different tenants.

Various scenarios were then modelled that would improve the rating using sophisticated dynamic simulation software. This showed that if the client converted to an LED lighting scheme then the building would not only achieve the desired ‘E’ rating but would also reduce overall energy consumption and require less maintenance.

EVORA Global prepared a project specification and undertook the management of all work required, including tendering and project management. Work and power shut-downs were undertaken out of hours followed by careful cleaning each night to ensure minimum disruption to the daily business of tenants.

Once the LED upgrade was completed a new EPC was issued reflective of the improvements carried out.

In addition to this change, EVORA Global was also able to identify further opportunities to improve the daily running and efficiency of the building.

This included switching from a Direct Network Operator (DNO) supplied system to a Building Network Operator (BNO) supplied system to enable automated billing of electricity bills. Changing to a BNO system allowed the tenants to have more flexibility around choosing suppliers and managing their own energy consumption.

It was also determined that all existing electrical usage could be put onto a single transformer instead of the two currently being used. This would mean the building now has standby capacity that can be utilised in the case of any future works being required to the primary transformer.

The mains distribution upgrade required coordinated weekend power shutdowns to avoid tenant disruption whilst ensuring planned works were tested and completed on time.

Key Outcomes

• LED lighting upgrade identified, designed, managed and completed helping to achieve the desired ‘E’ rating on the energy performance certificate (EPC)
• Additional optimisation opportunities identified including switching to a Building Network Operator supplied system to enable automated billing of electricity bills and greater choice and flexibility for tenants
• Spare electrical transformer identified to improve the future resilience and capacity of the building