Energy Tariff Savings Calculator
Estimate your annual savings by switching from your current energy tariff to a new one. Enter your total yearly consumption and both unit rates.
How It Works
We compute:
cost₁ = consumption × current rate
cost₂ = consumption × new rate
savings = cost₁ − cost₂.
Understanding Unit Rates
Energy suppliers charge per kWh plus standing charges. This tool compares only unit rates—check your bills for exact figures.
Standing Charges & Standing Costs
For complete accuracy, factor in daily standing charges. See our Standing Charges Explained.
Renewable & Green Tariffs
Many suppliers offer 100% renewable electricity at competitive rates—compare them in our Best Green Tariffs.
Key Values
| Entity | Attribute | Value |
|---|---|---|
| Consumption | Annual kWh | kWh |
| Tariff | Current rate | £/kWh |
| Tariff | New rate | £/kWh |
| Savings | Annual cost difference | £ |
Frequently Asked Questions
How do I find my unit rate?
Check your latest energy bill for the pence per kWh figure used by your supplier.
What about standing charges?
This calculator ignores daily standing charges—add them separately if needed.
Can I use it for gas too?
Yes—enter your annual gas consumption and rates in place of electricity.
Are green tariffs more expensive?
Not necessarily—shop around for competitive 100% renewable deals in our green tariff guide.
