PetrolCalculator

EV calculator

EV Charging Tariff Comparison

Compare two entered EV electricity rates for monthly driving.

Use this calculator

Compare two entered electricity prices.

What your result means

This compares only two electricity prices entered by the user for the same monthly EV mileage and efficiency. It does not represent supplier offers or account for household tariff conditions.

Worked example

800 monthly miles at 3.5 miles/kWh, comparing 7p and 25p:

Energy
228.57 kWh
Tariff A
£16.00
Tariff B
£57.14
Difference
£41.14

The values are monthly because monthly miles were entered.

Formula

energy=milesmiles/kWh; cost=energy×p/kWh100\text{energy}=\frac{\text{miles}}{\text{miles/kWh}};\ \text{cost}=\text{energy}\times\frac{\text{p/kWh}}{100}

Monthly mileage sensitivity at 7p vs 25p

Monthly milesDifference
400£20.57
600£30.86
800£41.14
1,000£51.43
1,200£61.71
1,500£77.14

Using the result

Compare tariff energy rates only. Standing charges, off-peak windows, eligibility and whole-house use are excluded.

Assumptions and limitations

  • Prices are illustrative user inputs, not supplier data.

Helpful questions

Are these live tariffs?

The result changes directly with the values entered; real-world driving and charging conditions can differ.

Do standing charges count?

The result changes directly with the values entered; real-world driving and charging conditions can differ.

What about off-peak windows?

The result changes directly with the values entered; real-world driving and charging conditions can differ.

Can I compare annual mileage?

The result changes directly with the values entered; real-world driving and charging conditions can differ.

Why is efficiency included?

The result changes directly with the values entered; real-world driving and charging conditions can differ.

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