Our prepayment prices are, on average, set at the same level as our standard credit prices, despite it costing more to supply prepayment customers than it does to supply customers on credit terms.
Prices are not solely dependant on meter readers - other impacts include the price at which we can buy gas and electricity and the direct costs of transportation and distribution. There are also Government taxes - so it's difficult to predict where prices will be in 10 years' time when all of the smart meters will be installed.
Regarding CO2, you can see details on what we do to mitigate our environmental impact here: www.npower.com/rwenpowercr/5_responsible_business/5_2_low_carbon_economy/index.html
