Different suppliers may provide their quotes in different ways, so it can be difficult to compare them ‘like for like’. The best idea is to take a recent month that you have a bill to hand for, and do a simple calculation to figure out what your new suppliers would charge you for the same amount of days and energy. 

Remember though, your bill will be based on the prices from your old contact that was signed 1, 2 or 3 years ago, and the wholesale price may have changed significantly, so even your old supplier probably won’t give you those same rates now. Only compare new quotes to new quotes.