How the Energy Price Cap Affects EV Charging Costs

March 28th, 2025
How the Energy Price Cap Affects EV Charging Costs

The energy price cap, decided by Ofgem, controls the electricity prices for homes on standard variable tariffs. This affects how much it costs to charge electric vehicles (EVs) at home. Generally, charging at home is cheaper than using public charging stations. However, rising energy costs mean that EV owners should pick the right EV energy tariff. This choice can help them save more money.

How the Energy Price Cap Impacts Home EV Charging Costs

Charging an electric car at home is a smart way to save on electricity costs, especially for those who can use off-peak rates. However, the price cap is impacting electricity prices. Because of this, many EV users are now dealing with higher costs per kWh.

Home Charging Cost Under the January 2025 Energy Price Cap

Charge Type Cost Per kWh (pence) Full Charge (60 kWh EV Battery) Cost Per Mile (4 mi/kWh)
Standard Variable Tariff (SVT) 24.86p £14.91 6.2p
Fixed Tariff (Average) 22p £13.20 5.5p
EV-Specific Off-Peak Tariff 7p – 12p £4.20 – £7.20 1.8p – 3p

Note: Costs exclude standing charges and VAT.

  • EV owners using a regular tariff will spend over £14 for a full charge.
  • Fixed tariffs can help save some money, but they don’t provide much flexibility.
  • Special EV tariffs can reduce charging costs by more than 50% when using off-peak hours and rates from energy suppliers.

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Public EV Charging Costs vs Home Charging

Public EV charging is more expensive than charging at home. This is even more noticeable with fast and ultra-fast chargers. Some energy suppliers offer lower prices for home charging. But, public EV drivers usually have to pay as they go.

Average UK Public EV Charging Costs (January 2025)

Charger Type Cost Per kWh (pence) Full Charge (60 kWh Battery) Cost Per Mile (4 mi/kWh)
Slow (3-7 kW) 53p £31.80 13.2p
Fast (7-22 kW) 53p £31.80 13.2p
Rapid (43-50 kW) 81p £48.60 20.2p
Ultra-Rapid (100+ kW) 81p £48.60 20.2p

Charging at home is 50-70% cheaper than using public chargers. Ultra-rapid chargers can be almost four times more expensive than the lower rates for EVs during off-peak times. EV drivers should use apps like Zap-Map to compare prices for public charging. This way, they can find the best deals.

Best EV Chargers for Home Charging & Their Features

Choosing the right EV charger is important. It can change how quickly you charge your vehicle. It can also influence how much energy you consume. Plus, it matters if it fits with your electricity plans.

EV Charger Power Output Smart Charging? Compatible Cars Year Subscription Needed?
Hive EV Charger 7.4kW Yes Most EVs No
Ohme Home Pro 7.4kW Yes Most EVs No
Zappi Charger 7.4kW Yes (Solar Compatible) Most EVs No
Tesla Wall Connector 7.4kW – 22kW No Tesla & Some Others No
  • Smart chargers can decide to charge when electricity is cheaper. This helps you save money.
  • Solar-compatible chargers, like Zappi, can connect to solar panels. This allows for free energy for EVs.
  • Using Direct Debit for EV energy tariffs often means you get lower rates.

EV-Specific Tariffs: How to Reduce Charging Costs

Many energy suppliers offer special deals for electric car drivers. These deals provide lower rates at night, which is off-peak hours, to help you save money. You can charge your electric car more cheaply when there is less demand on the grid.

Best EV Charging Tariffs in the UK (2025)

Energy Supplier EV Tariff Name Off-Peak Rate (p/kWh) Off-Peak Hours Standing Charge (p/day)
Octopus Energy Intelligent Octopus Go 7p 11:30 PM – 5:30 AM 39.53p
E.ON Next Next Drive 6.7p 12 AM – 7 AM 58.68p
British Gas EV Tariff 7.9p 12 AM – 7 AM 31.36p
EDF Energy GoElectric Overnight 8.99p 1 AM – 5 AM 63.72p

Octopus Energy and E.ON Next offer the lowest prices for charging electric vehicles (EV). To enjoy rates for EVs, you must have smart meters. Though the standing charges can be higher, the savings on off-peak electricity prices can make up for it.

EV-Specific Tariffs: How to Reduce Charging Costs

How Smart Meters & Peak Times Impact EV Charging Costs

Using a smart meter can help EV drivers take advantage of EV energy tariffs in several ways:

  • You can see how much electricity you are using right now.
  • You can plan your charging for times when it is cheaper. This can help you save on energy costs during peak hours.

Peak vs Off-Peak Charging Cost Comparison

Time of Day Tariff Type Cost Per kWh (pence)
Peak Hours (4 PM – 9 PM) Standard Variable Tariff 24.86p
Off-Peak Hours (12 AM – 7 AM) EV-Specific Tariff 6.7p – 8.99p

Charging an EV during peak hours costs over three times more than charging during off-peak hours. Smart chargers like Hive EV Charging and Zoom EV can automatically control charging. They do this at times when the rates are cheaper.

EV Charging Costs vs Petrol & Diesel Vehicles

As electricity prices increase due to the price cap, some drivers may question if electric vehicles (EVs) are still less expensive than petrol or diesel cars.

EV vs Petrol vs Diesel: Cost Per Mile (2025)

Vehicle Type Fuel Cost Per Mile (p) Full Tank/Charge Cost (£)
Home-Charged EV (Off-Peak Tariff) 1.8p – 3p £4.20 – £7.20
Home-Charged EV (Standard Tariff) 6.2p £14.91
Public EV Charging (Fast Charger) 13.2p £31.80
Petrol Car (Average 40 MPG) 14.5p £72.50
Diesel Car (Average 50 MPG) 13p £65.00

Charging EVs at home is still 4 to 6 times cheaper for each mile than using petrol or diesel cars. EV drivers who rely on public chargers may end up paying a cost per mile similar to diesel motorists. Finding cheaper options for EV charging can help save a lot compared to fossil fuel vehicles.

How Much Electricity Does an EV Use Compared to Household Appliances?

Many EV owners want to find out how charging at home compares to using regular appliances. If you understand energy use, you can decide the best time to charge your EV. This can help you save on energy bills.

Appliance / Vehicle Average Energy Consumption (kWh) Annual Cost (Standard Rate, 24.86p/kWh)
EV Charger (12,000 miles per year, 4 mi/kWh) 3,000 kWh £745.80
Washing Machine (4 washes per week) 220 kWh £54.69
Dishwasher (once per day) 295 kWh £73.34
Hive EV Charger (Smart Charging) Varies (Optimises Off-Peak Use) Potentially 50% cheaper
Electric Shower (10 mins per day) 1,200 kWh £298.32
  • Electric vehicles (EVs) need more energy than all main appliances combined. Still, EV tariffs can greatly reduce expenses.
  • A Hive EV Charger or other smart chargers can help use energy when demand is low. This results in cheaper rates during peak times.

EV Car Hire & Subscription Models: Are They Worth It?

Many drivers are considering subscription options instead of buying an EV. They are interested in services like Zoom EV or a year subscription for car hire.

Service Monthly Cost (£) Included Miles Charging Discount?
Zoom EV Subscription £599 1,000 miles Yes (EV tariff credit)
Volvo EV Subscription £769 Unlimited No
Onto EV Hire £549 750 miles Yes (Public Charging Access)
  • EV subscriptions include insurance, vehicle service, and often discounts for charging.
  • New EV drivers may find it useful to rent an EV for a short time before choosing to buy one.
  • Public charging can be cheaper for those who use an EV subscription.

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How Energy Price Cap Changes Impact Fleet EV Charging Costs

The energy price cap helps keep electricity prices steady for homes. However, business fleets and EV drivers often pay more. This is because they use public chargers. When charging at home, people can save money by using lower rates during off-peak times. On the other hand, fleet vehicles often rely on rapid chargers. These prices do not have the same protections from the energy price cap.

How Much Do Fleet EVs Pay for Charging?

Charging Type Cost Per kWh (p) Full Charge (60 kWh Battery) Cost Per Mile (4 mi/kWh)
Home Charging (EV Tariff) 7p – 12p £4.20 – £7.20 1.8p – 3p
Home Charging (Standard Tariff) 24.86p £14.91 6.2p
Public Fast Charger 53p £31.80 13.2p
Public Rapid Charger 81p £48.60 20.2p

Company fleets that charge at public chargers spend much more on electricity than those with their own EV charging stations at work. Fleet operators can benefit from corporate EV pricing, which offers lower rates during off-peak times, similar to home charging. Businesses can save money by installing solar panels at their depots. This allows them to use free renewable energy to power their fleet EVs.

Fleet EVs vs Diesel Vehicles: Running Cost Comparison

Vehicle Type Fuel Cost Per Mile (p) Annual Running Cost (15,000 miles)
Fleet EV (Home Charging – Off-Peak) 2p – 3p £300 – £450
Fleet EV (Public Rapid Charging) 20p £3,000
Diesel Vehicle (50 MPG, Diesel at 150p/L) 13p £1,950
  • Electric vehicles (EVs) with fast chargers cost more to drive per mile than diesel cars do.
  • Companies need to invest in chargers at work. This could help them save as much as charging EVs at home.
  • Business energy rates may change in the future. This could help fleets save money when the grid is less busy.

How Solar Panels Can Reduce EV Charging Costs Under the Price Cap

With energy bills rising, many EV owners are installing solar panels on their homes. This allows them to save money on charging their EVs. By generating their own power, homes can dodge high peak prices and charge their EVs for free.

How Much Can Solar Panels Save on EV Charging?

Charging Source Cost Per kWh (p) Full Charge (60 kWh Battery) Cost Per Mile (4 mi/kWh)
Home Charging (Standard Tariff) 24.86p £14.91 6.2p
Home Charging (EV Off-Peak Tariff) 7p – 12p £4.20 – £7.20 1.8p – 3p
Solar Panels + Battery Storage 0p (Self-Generated) £0 0p
  • Solar panels along with a home battery can make charging EVs free.
  • The Hive EV Charger and Zappi chargers allow you to use solar power to charge your EV. This means you will need less energy from the grid.
  • Any extra solar energy can go back to the grid. This can help you earn kWh credit, which may reduce your other energy bills.

Best Solar EV Chargers in the UK

EV Charger Solar Compatible? Smart Charging? Best For
Zappi Yes Yes Homeowners with solar panels
MyEnergi Eddi Yes Yes Homes with battery storage
Tesla Powerwall Charger Yes No Tesla owners with Powerwall
Hive EV Charger No Yes Smart charging without solar
  • Solar-friendly chargers allow you to charge your car using energy from the sun. This helps you rely less on grid electricity.
  • With an online platform like ZapMap, EV drivers can look up the cost per kWh and make better home charging plans.

Solar Panels Can Reduce EV Charging Costs Under the Price Cap

What the Future Holds for EV Charging Costs & Energy Tariffs

Many EV drivers are wondering if the costs of charging their electric vehicles will be cheaper or more expensive in the future. This curiosity comes as the energy price cap is rising.

  • Last year, several energy suppliers stopped providing special rates for EVs. Some began using pricing models that change.
  • From October 2024 to January 2025, off-peak EV tariffs are expected to be cheaper than regular rates.
  • The next drive in EV pricing will focus on real-time pricing. This means EV owners can charge their cars according to current grid demand.

Future Predictions for EV Charging Costs

Year Predicted Home EV Tariff (p/kWh) Predicted Public Charging Cost (p/kWh) Expected Trend
2025 7p – 12p (Off-Peak EV Tariff) 53p – 81p Public charging costs rising
2027 6p – 10p 50p – 75p More EV tariff discounts
2030 5p – 9p 45p – 70p More dynamic pricing for EVs

By 2030, charging your electric vehicle (EV) at home should be cheaper than it is today. New energy tariffs will reward EV owners who charge their cars during times when demand is low or when there is extra renewable energy on the grid. Smart chargers and energy storage will also help keep the costs of EV charging down.

Will the UK Introduce More EV Tariffs?

Ofgem is exploring new pricing plans just for electric vehicles (EVs). These will replace the old standard rates. They may use dynamic tariffs more frequently. These tariffs offer lower prices during times of low demand. Companies like Volvo and Zoom EV already offer yearly subscriptions that include discounts for public EV charging.

Final Thoughts

Charging your electric vehicle (EV) at home is the most affordable option. However, using public chargers can be quite expensive. The increase in the energy price cap has made it pricier to charge at home, but EV tariffs still provide better rates. Smart meters and off-peak tariffs are helpful for EV owners to save more on their electricity bills.

FAQs About the Energy Price Cap & EV Charging

Does the energy price cap apply to EV charging?

Yes, the price cap sets limits on electricity prices for home EV charging with standard variable tariffs. But, it does not include public EV charging.

What is the cheapest way to charge an EV in the UK?

  • Choose an EV tariff that includes off-peak hours.
  • Charge your vehicle at night when prices are cheaper.
  • Use a smart charger to get the best charging times.

Are smart meters required for EV tariffs?

Yes, many EV energy tariffs require a smart meter to monitor off-peak usage.

Is EV charging still cheaper than petrol or diesel?

Charging at home costs 4-6 times less for every mile compared to using a petrol or diesel vehicle.

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