Some energy providers use what are known as ‘winter uplift’ payments, meaning if you switch to them during the winter, they’ll set your monthly direct debit payments slightly higher to ensure you don’t end up with a big debit balance during the higher-use period. Typically, this will happen with certain suppliers if you join between October and April.
We don’t include this in our comparisons - we’ll simply take your usage and divide it by 12 to get your monthly costs. But don’t worry, a ‘winter uplift’ doesn’t mean you pay more overall - you’ll likely see your monthly direct debit payment reduced after the winter months. Even if you don’t, it will remain as credit on your account, so you can ask your supplier to pay this back or you’ll get it after you receive a final bill if you switch away.