Case Study - FMCG Site Energy Survery

 
FMCG SIte Energy Survey - Before

A site has an energy budget of £2.3m comprising:-

  • £1.3m for 13GWhrs electricity purchased at low voltage (415V) from the DNO through 4 transformers.  
  • £660k for 19GWhrs for mains gas.
  • £200k for 200,000m3 water
  • £100k for effluent

The energy survey identified the following improvement:-

  • Install HV low loss transformers, buy power at HV.
    Optimise to 400Volts output.
  • Install a CHP to generate electricity from gas and feed the waste heat into the process.
  • Change lighting site wide from Fluorescents to LED.
  • Change direct on line ventilation fans on AHU's to electronically commutated fans.

The capital costs of these elements were calculated to be £1.58m
with a payback of £660k - so a payback of 2.4 years. 
The carbon reduction was 20% on mains gas or 60% on green certificated gas.