Upgrading to LED lighting typically halves your lighting bill.
If you install lighting controls at the same time (occupancy sensors etc), you can reduce running costs by around 70%, particularly if half your office is empty, but all your lights are on.
Spirit Energy has this week launched an online LED Lighting Calculator to enable you to see very quickly how much energy, and money, you could save, and how long it would take a lighting upgrade to pay for itself.
