Case Study

Quick Facts

Sector: Commercial
Project: IP rated T5 lighting
Location: Cheshire
Energy Output: 138,000kWh per year
Carbon saving: 72,520kg CO2 per year

The Project

The client is a leading supplier of farm animal feeds in the UK.  As part of a programme of energy efficiency improvements, this successful feed division were keen to modernise the lighting in their blend sheds. As well as saving electricity and reducing carbon emissions, The management wanted to improve the visual environment, to enable staff to complete tasks more easily and safely.

The Solution

Following a tendering process, our partner was selected to replace aged high pressure sodium and metal halide low bay lighting in the feed blend sheds, at the Group’s Cheshire headquarters. Due to the product being animal feed, a strict no-glass policy is in force. The product blending process also creates a lot of atmospheric dust.

With this in mind, we specified IP rated Tamlite Hilux luminaires with Perspex dust covers, in order to prevent both dust ingress and also contamination of feedstuffs, in the event of a broken lamp.

To maximise energy savings the luminaires were also equipped with dimmable ECG ballasts and individual Ex-Or sensors. Using remote handset programmers the lights are set to maintain a minimum Lux level at the floor, automatically dimming based on either available natural light and/or occupancy.


The Hilux fittings each have four 54Watt T5 HO lamps. These are more reliable and longer lasting than the sodium lamps. Also if one T5 lamp should fail, the sensors will compensate by brightening the others. If an area is vacant for a set period, the lights then switch off. All settings can be adjusted easily, from the ground, should site requirements ever change.

Energy Savings

In order to verify actual energy saved, our engineers installed a temporary energy monitoring system in the sheds before the work commenced. The real time data accumulated showed that the system is saving 71% electricity in Shed 7 (with daylight contributing) and 61% electricity in Shed 8 (no daylight), which is in line with predictions. The expected payback is 34 months.