Garforth argues that efficient use of energy is the first step towards securing energy security and resilience in the future. Green energy generation, whether from solar panels or wind generators or hydro-electric or any other source can only work if we address the wasteful use our buildings make of current energy supply. Forty percent of our energy use in this country is in our buildings' electricity and heat demand. We must use it better. The iCR camera then returns to a private residence to see how well an energy audit we showed months ago has been used to improve energy conservation.