Which energy suppliers are cheapest in the UK?
Across standard tariffs, there is very little price difference between major UK energy suppliers right now (October 2026).
Because wholesale energy costs remain high, most suppliers price their standard variable tariffs near to or at the legal ceiling set by the Ofgem price cap. We'd honestly love to just slash prices: to find out why we can't, visit our explainer about how much profit we actually make.
You can see all our current pricing info at octopus.energy/tariffs, but if you want an impartial, comparison across every supplier’s fixed and standard deals, we suggest you check an independent price comparison site like Uswitch.
There ARE three key areas where Octopus stands out:
Always below the price cap: We are the only large UK supplier to have consistently kept our standard variable tariff (Flexible Octopus) priced below the Ofgem price cap. While other providers set their default rates directly at the cap maximum, we discount ours to pass savings straight back to customers.
Smart tariffs that can cut costs: If you have smart tech or can shift your behaviour, you can make big savings with smart tariffs. Don't know which one would suit you (or even what one is)? Check out our ultimate guide to smart tariffs.
Service you don't have to battle: Price is only part of the equation; billing errors and endless call queues with terrible hold music carry their own cost. Octopus has been named a Which? Recommended Provider for nine years running and holds an "Excellent" rating on Trustpilot based on hundreds of thousands of reviews.