Hi,
At the end of 2007 we started, as a household, to become a bit more aware of the importance of taking green measures in order to preserve the environment and save some money...
We have since kept a record of meter readings and here is our first Graph showing at first the impact of simple measures (bulbs, no standby appliances, clever use of thermostat etc...) and then the impact of our solar system (PV and Tubes).
I thought I would share the results with you...

(the image is on our server which os on from 7->22h only, not sure if it will show out of these hours ((solar powered...))
Stef