Solar Savings Calculator UK - How To Calculate EV Charging Cost

Solar Savings Calculator UK - How To Calculate EV Charging Cost

With electricity prices fluctuating and more UK households adopting solar, many EV owners are asking the same question: how much does it really cost to charge an electric vehicle at home?


Understanding how to calculate EV charging cost is essential if you want to accurately eliminate your running costs and compare the benefits of charging from the grid versus using solar power.


A solar EV charging savings calculator helps drivers and installers estimate potential savings by combining solar generation with home EV charging. This type of solar savings calculator UK homeowners use can reveal just how much cheaper electric driving can become when solar energy is involved. 


How to Calculate EV Charging Cost

The simplest way to estimate EV charging cost is using this formula:

EV Charging Cost = Battery Size (kWh) × Electricity Price (per kWh)


Example Calculation

If an EV has a 60 kWh battery and electricity costs 30 per kWh:


60kWh x £0.30= £18 for a full charge.


However, most drivers rarely charge from 0% to 100%, meaning the real cost per charge is often lower.


For example:

  • Charging 40 kWh at 30p/kWh

  • Total cost= £12


This makes home charging significantly cheaper than fossil fuel alternatives.


How Solar Power Reduces EV Charging Costs

When charging from solar panels, the electricity used to power your vehicle is generated by your home rather than purchased from the grid.


This means that solar EV charging can dramatically reduce running costs.


Benefits include:

  • Lower electricity bills

  • Reduced reliance on the grid

  • Faster return on solar investment

  • Lower carbon footprint


A solar savings calculator for UK homeowners estimates how much solar energy can offset EV charging demand throughout the year.


Start Calculating Your EV Charging Savings

If you’re considering solar panels, or a home EV charger, understanding how to calculate EV charging cost is the first step towards reducing your energy bills. 


A solar savings calculator UK drivers can use makes it easy to eliminate potential savings from solar-powered charging and see how quickly your investment could pay off.


Whether you’re an EV owner, homeowner, or installer exploring renewable energy options, using a solar savings checker or electric car savings calculator UK tool provides valuable insight into the real cost of driving electric.


Using a Solar EV Charging Savings Calculator

For drivers researching renewable energy options, an electric car savings calculator UK tool provides a clearer understanding of the financial benefits of switching to solar-supported EV charging. 


Use our tool to compare potential solar EV charging costs with your current fuel costs:

Solar EV Charging Savings
See how much you can save with solar power
miles
mi/kWh
p/kWh
p/kWh

Daily Consumption 8.6 kWh
Grid Cost (per day) £2.41
Solar Cost (per day) £0.86
Daily Savings
£1.55
= £565 per year

Annual Projection (365 days)
Total Miles 10,950 mi
Total Consumption 3,129 kWh
Grid Cost (annual) £879
Solar Cost (annual) £314
Total Annual Savings £565

 

Example EV Charging Cost Comparison

Here is a simplified example showing how solar can impact EV charging costs.

Charging Source

Cost per kWh

Cost for 40 kWh Charge

Standard home tariff

£0.30

£12

Off-peak EV tariff

£0.10

£4

Solar energy

£0.00- £0.05 equivalent

£0-£2

Over the course of a year, these differences can translate into hundreds of pounds in savings, particularly for high-mileage drivers.

This is why tools such as a solar savings checker are increasingly popular among homeowners considering EV chargers and solar installations together.

Why Calculating EV Charging Costs Matters

Electric vehicles are typically far cheaper to run than petrol or diesel cars. However, the exact charging cost depends on several factors, including:

  • Electricity tariff price (p/kWh)

  • The battery size of the vehicle

  • Charging efficiency

  • Charging location (home, workplace, public charger)

  • Solar energy availability

Using an electric car savings calculator UK drivers rely on can help quantify these variables and provide a realistic estimate of their running costs. 

For installers and homeowners exploring solar integration, a solar savings checker can also demonstrate the long-term financial benefit of pairing solar panels with an EV charger.

Why Installers Are Using Savings Calculators

For installers, explaining the financial benefits of EV chargers and solar integration is often a key part of the customer journey.

A solar EV charging savings calculator, as the one included earlier, can help installers:

  • Demonstrate long-term savings clearly

  • Improve customer understanding of EV charging costs

  • Support solar + EV charger upselling

  • Provide data-driven recommendations

With demand for installing EV charging points continuing to grow across the UK, providing customers with clear financial insights helps build trust and confidence in renewable energy solutions. 

Speak to the EV Charging Specialists

If you would like advice on EV chargers or solar-compatible charging solutions, the team at Volta EV can help.

Call: 01883 789148

Email: sales@voltaev.co.uk 

Website: https://www.voltaev.co.uk/ 

Our specialists support electricians, installers, and homeowners across the UK with reliable EV charging solutions and expert guidance on the transition to electric driving.