Today I have finally ordered LED lights for the hotel; having proved the concept at home I have finally found lights with an acceptable brightness and Kelvin in LED.
So I have ordered the LED bulbs for the Spa. There are presently 185 of them in total lit for 15 hours per day, each bulb is a 50watt halogen; this equates to around 22 tonnes of CO2 per year (about 2 average households) and they cost £5600 per annum in electricity costs.
The replacement bulbs I have ordered are LED and I have managed to get them for £5.80 each and the cost of fitting each bulb with various adapters is around £8 giving a total cost to replace these 185 bulbs of roughly £2500. Fortunately these replacement bulbs are 3watt each (considerably less than 50watt), they will still be on 15 hours per day but will now produce only 1.31 tonnes of Co2 and cost around £350 per year to have lit.
So you can be green and be making economically sound decisions at the same time!