ILG had 400 x 250W solar panels fited to the roof of there sussex plant. This system will produce 92,800kWh per year and covered 90% the consuption used at the site. This was also due to changing the lighting, they had such bad lights when we changed it over it saved them 83% on their lighting bills alone. A vast amount was being spend on the lighting at the plant before it was changed.
It has now made them much more profitable ongoing, the expected lifespan of solar pv is 40 years and the LED lighting will run for 20 years. This gives great long term savings and the return on the investment can be very quick. in fact after changing the lighting and adding the solar the payback time for this project was 3.8 years.