UK Energy Tariff & Cost Calculator
Calculate Your Exact UK Energy Costs
Calculate your exact gas & electricity spend based on your house size and usage.
Annual Savings Estimator
How much could you save by switching to Octopus Energy?
Your Current Monthly Energy Bill:£180 / mo
£60 / mo£250 / mo£500 / mo
Estimated Annual Savings
£441 / year
Your Household Profile
Smart Home Compatibility
Filter providers offering specialized smart tariffs:
Electricity Usage (kWh/year)3,100 kWh
Gas Usage (kWh/year)11,500 kWh
Cheapest Smart Tariff Found
Octopus Energy
Estimated annual cost based on your 14600 kWh total usage.
£1,719
~£143 / month
Best Value#1 Ranking100% GreenSmart EV & Heat Pump Ready
Octopus Energy
Tariff: Flexible Octopus / Tracker 12M · Customer Score: 92%
£1,719
£143/mo
#2 Ranking
Utilita
Tariff: Smart PAYG Energy · Customer Score: 76%
£1,747
£146/mo
#3 Ranking100% GreenSmart EV & Heat Pump Ready
E.ON Next
Tariff: Next Fixed 12M v2 · Customer Score: 81%
£1,780
£148/mo
#4 Ranking100% GreenSmart EV & Heat Pump Ready
OVO Energy
Tariff: OVO 1-Year Fixed / Anytime · Customer Score: 78%
£1,814
£151/mo
#5 RankingSmart EV & Heat Pump Ready
British Gas
Tariff: Standard Variable / Fixed Home 12M · Customer Score: 74%
£1,850
£154/mo
#6 RankingSmart EV & Heat Pump Ready
EDF Energy
Tariff: EDF Essentials 1Yr Fixed · Customer Score: 73%
£1,855
£155/mo
#7 Ranking100% GreenSmart EV & Heat Pump Ready
ScottishPower
Tariff: Smart Fixed Energy June 2026 · Customer Score: 71%
£1,884
£157/mo
#8 Ranking100% GreenSmart EV & Heat Pump Ready
Good Energy
Tariff: Good Fixed 12M Green · Customer Score: 89%
£1,887
£157/mo