We paid just 4p/kWh for our electricity in June - a mix of free solar generation, overnight off peak and a smidgeon of peak rate (because I accidentally turned off the battery at one stage!) Total cost £73 - £37 into the car, enough for 3,250 miles and £36 to run the house - cooking, lighting, TV and our Air Conditioning.

From financial adviser to energy adviser — the change that started it all