There are tariffs which track the market, and it is worth looking at one of these, although most people tend to prefer a fixed price tariff as it enables you to plan and avoid potential spikes in prices. The wholesale prices are fluctuating all the time, however the costs associated with supply are generally increasing and that’s one of the main reasons lower wholesale prices don’t necessarily mean lower prices for customers.  Prices tend to increase with demand so you can expect to see price rises as we come in to the winter months, therefore it’s a good idea to sort out your energy contracts before October if possible.