Annual saving of £409.63 on average shown is based on ScottishPower’s Gas & Electricity Offer customers across Britain with annual mains gas usage of 20,500kWh and annual Standard Rate electricity usage of 3,300kWh, who pay quarterly (excluding prompt payer discounts) and switch to ScottishPower's Online Energy Saver 8 Offer, paying monthly by Direct Debit. Comprises average savings of £205.80 for switching to monthly Direct Debit from quarterly (excluding prompt payer discounts) and £203.83 for Online Energy Saver 8 (including the Online Energy Service annual discount of £15.75). Prices correct as at 14th December 2009. All figures shown include VAT at the current applicable rate of 5%.