As part of the Scottish Water water & energy efficiency project I have installed a ‘smart water meter’ which has nothing to do with billing. What it does do though is tell me how many litres of water I used (male) 30.5 litres and 470 kWh of heat energy. According to the instructions I can set individual energy efficiency goals which will be interesting taking into account the female make up of this household, as allegedly women take longer hotter showers. So watch this space with interest and lets see if this little tool will lead to behaviour change i.e. shorter showers and less used energy and even save money.