Following a report delivered by
BRE National Solar Centre, a project partner of the Cornwall New Energy
project, Coastline Housing Ltd has recently implemented a low energy lighting
strategy at their offices in Redruth to help reduce energy costs and improve
An initial lighting survey was
carried out to determine the specification of existing indoor electric lighting
and take spot check measurements of desk illuminance. Total lighting demand
across 330 fluorescent luminaires was estimated to be 19.3 kW. Overall annual
lighting electricity consumption was estimated to be approximately 42,650kWh,
equivalent to more than 25% of the building’s electricity requirements. This is
typical of office environments.
The data was then analysed and
compared with relevant lighting recommendations and current guidelines on
office lighting. Computer modelling was carried out to provide an example of
the savings achievable through replacement of existing fluorescent lighting
with LED lighting.
The report found that LED lighting could reduce electricity consumption by more than 20,000kWh per year. With projected annual savings of approximately £3,000 the scheme is expected to provide a payback of less than 5 years, with annual CO2 savings in the order of 7 tonnes.
The LED lighting scheme was implemented in August 2018 and has provided immediate savings, along with positive feedback from employees regarding light colour and intensity.
Coastline is no stranger to energy efficiency investments, having already installed an 80kW solar PV system at their offices in 2015. They also strive to reduce fuel poverty and carbon emissions across their housing portfolio.
Ralph Retallack, Energy Efficiency Project Manager at Coastline commented:
Coastline were approached by Cornwall New Energy to undertake a no cost review of the business operations at Coastline House, with the aim of identifying opportunities for improving both sustainability and energy efficiency. In common with many organisations we were aware that we could be doing better, but were not sure how best to move forward when presented with so many choices. The review was just what we needed and we embraced the opportunity; why wouldn’t you?
We knew that a change to LED lighting would be beneficial but the comprehensive survey and following report presented us with a clear business case to proceed and we are delighted to have now taken this step which will make savings year on year.
A second key finding was the implementation of electric fleet vehicles and we are currently in process of taking this forward and planning implementation during 2019. Watch this space!