I currently have my power supplied by npower. Last year I received my first bill - £600 for just 4 months electric.I live in a 1 bed flat, all electric and as I was at work, I was out the house some 60 hours a week. I was so angry at the prices, I visited moneysupermarket back in Oct 08 and npower came out cheaper (to npower) by some £450 a year!
I couldnt change my tariff because I was on the standard tariff, the ONLY tariff they offer customers who move into a property that they(any supplier) provide power to - meaning that as a consumer, I dont get the best deal. The cheaper prices are only online, so if you are someone who is happy with their supplier, you are being overcharged by some £5-£10 a week when you could simply go online and sign up to a cheaper tariff by the same supplier.
I am angry because this is something that they NEVER tell customers signing up. At least with companies like BT, they give you a choice whether to either telephone in, or sign up online and get a free home hub(for example) - so why cant the electric companies advertise the same way?
Unless you are looking to switch supplier, you will be totally unware of the savings you could make, which can run into hundreds of pounds a year