npower have teamed up with Act on CO2 to bring you a handy way to calculate your carbon footprint. The Act on CO2 carbon calculator is an interactive tool to help you review your energy usage. Also the Wallace and Gromit energy saving house is full of useful tips to save you energy and money. From installing an 'A' rated energy efficient boiler to heat your home to switching electrical appliances off standby, there are many ways to save energy and reduce your bills.