1 MWh.y^-1 on lighting seems high to me MWh/W would be 1x10^6/100 = 10,000 hours or they are all on for more than a year in a year (8760 hours in a year, add an extra 24 for next year)

What you growing in the loft and how does the high miles compare to the Moroccan stuff

Hi
I have just ventured into LED lighting, replacing one blown PAR38 100W filament bulb in our kitchen with one of these.

http://www.tlc-direct.co.uk/Products/LALED38W.html

I was sceptical as they are just under £20.00 and similar units on other sites were £60.00 plus. I am very pleased so far. The light output is good and the quality of light is excellent.

The kitchen has 6 PAR38 bulbs and a high ceiling (12 foot). as 3 bulbs had blown I replaced 2 with

http://www.tlc-direct.co.uk/Products/MGPAR3820ES.html

and the one LED. I will now replace the remaining 3 100W bulbs with the LED when they blow. The energy saving bulbs are good but they suffer from a delayed warm up and the quality of the light is not as good over worktops etc, so I have used them over the floor area.

Dave