Energy tools

Free calculators and price checkers from EnergyPlus.

• Business energy rate checker

  Enter the unit rate and standing charge from your business energy bill and see how they compare with what UK businesses your size pay on average.

• Energy price cap calculator

  Work out what the Ofgem price cap means for your own bill, by region, payment method and meter type: now under the October 2026 cap, before 1 October, and the January 2027 forecast.

• Energy tariff tracker

  Every energy tariff you can switch to today, priced on your usage for your region against the Ofgem cap, plus where fixed deals have been heading since March.

• Octopus Agile and Tracker prices

  Agile Octopus half-hourly prices and Octopus Tracker daily rates for all 14 regions, today and tomorrow, with 30 days of history against the Ofgem price cap.

• Time-of-day tariff explorer

  Every time-of-day electricity tariff we hold rates for, by region: off-peak windows, prices, standing charges and a break-even against the Ofgem cap for your usage pattern.