energy web sites and wrong info

caverncity

I have used two web sites that search for a cheaper supplier and both have listed the likes of npower etc that can supply my yearly dual fuel costs at over £250 cheaper than powegen. However when I check their tariff costs they are dearer than powergen, also when I go direct to the suppliers that have been mentioned as being approx £200 cheaper they can only either reduce it by say £3 a year or not match it.

So how can they justify the £250 less than what I am paying now when clearly it is not.

BTW has anyone found a cheaper supplier in the NW than powergen