EV Charger Electricity Costs UK 2025: Complete Tariff Comparison & Savings Guide

Charging your electric vehicle at home in the UK can cost anywhere from £200 to £900 per year depending on your chosen tariff, annual mileage, and charging habits. With the right electricity tariff, UK EV owners can save £300-500 annually compared to standard home energy rates. This comprehensive guide compares all major UK EV tariffs in 2025, helping you find the cheapest option for your driving needs.

Understanding UK EV Electricity Tariffs: The Basics

UK EV electricity tariffs are specialised energy plans designed specifically for electric vehicle owners. Unlike standard domestic tariffs charging 24-28p/kWh throughout the day, EV tariffs offer ultra-cheap overnight rates (typically 7-9p/kWh) during off-peak hours when you're most likely to charge your vehicle.

How EV Tariffs Work

EV tariffs operate on a time-of-use (TOU) pricing model:

• Off-peak hours (typically 23:30-05:30): Ultra-cheap rates of 7-12p/kWh for EV charging
• Peak hours (typically 16:00-19:00): Higher rates of 30-40p/kWh for household consumption
• Standard hours: Mid-range rates of 20-25p/kWh for remaining times

The strategy is simple: charge your EV overnight when electricity demand is lowest and renewable generation (particularly wind) is abundant, benefiting from rock-bottom prices whilst reducing grid strain.

Who Should Consider an EV Tariff?

EV tariffs deliver maximum savings if you:

• Charge at home regularly (at least 3-4 times per week)
• Can charge overnight (have off-street parking with home charger)
• Drive 7,000+ miles annually (higher mileage = greater savings)
• Use minimal electricity during peak hours (or can shift usage to off-peak)
• Have a smart meter (required for most intelligent tariffs)

Not suitable if you:

• Rely primarily on public charging (workplace or rapid chargers)
• Cannot charge overnight (no home charger access)
• Drive fewer than 5,000 miles annually (savings too modest)
• Use significant electricity during peak hours (costs may offset savings)

Complete UK EV Tariff Comparison 2025

Here's a detailed breakdown of every major UK EV electricity tariff available in 2025, including exact rates, eligibility requirements, and unique features.

1. Octopus Energy Intelligent Go: The Market Leader

Off-Peak Rate: 7p/kWh (23:30-05:30, 6 hours)
Peak Rate: 24.50p/kWh (05:30-23:30)
Standing Charge: 46p/day (£167.90/year)
Smart Features: Intelligent charging via app integration

How Octopus Intelligent Go Works

Octopus Intelligent Go is the UK's most popular EV tariff, offering the cheapest off-peak rate at just 7p/kWh. The tariff uses smart technology to automatically charge your vehicle during the cheapest 6-hour overnight window.

Key Features:

• Automatic smart charging: Connect compatible EV or charger to Octopus app
• Guaranteed cheap hours: 23:30-05:30 daily at 7p/kWh
• Bonus cheap slots: Additional off-peak windows when grid demand is low
• Whole-home benefit: ALL electricity used 23:30-05:30 charged at 7p/kWh (not just EV)
• No minimum charge: Use as much or as little as needed

Eligibility Requirements

• Smart meter (SMETS2 or compatible SMETS1)
• Compatible smart charger OR compatible EV with API access
• Compatible chargers: Ohme, Wallbox, Hypervolt, Sync EV, Indra, EO, Project EV
• Compatible vehicles: Tesla (all models), Renault Zoe, VW ID.3/ID.4, Audi e-tron, Polestar 2, BMW iX

Real Cost Examples (Octopus Intelligent Go)

Example 1: Nissan Leaf (40kWh) - 8,000 miles/year

• Annual consumption: 2,400 kWh (at 3.3 miles/kWh)
• Charging cost: 2,400 kWh × £0.07 = £168
• Standing charge: £167.90
• Total annual cost: £335.90 (£28/month)

Example 2: Tesla Model 3 Long Range - 12,000 miles/year

• Annual consumption: 3,000 kWh (at 4.0 miles/kWh)
• Charging cost: 3,000 kWh × £0.07 = £210
• Standing charge: £167.90
• Total annual cost: £377.90 (£31.50/month)

Example 3: Kia EV6 - 15,000 miles/year

• Annual consumption: 4,285 kWh (at 3.5 miles/kWh)
• Charging cost: 4,285 kWh × £0.07 = £300
• Standing charge: £167.90
• Total annual cost: £467.90 (£39/month)

Comparison vs Standard Tariff

On a standard tariff at 24p/kWh:

• 8,000 miles: £576 + £168 = £744 (Intelligent Go saves £408/year)
• 12,000 miles: £720 + £168 = £888 (Intelligent Go saves £510/year)
• 15,000 miles: £1,028 + £168 = £1,196 (Intelligent Go saves £728/year)

Verdict: Octopus Intelligent Go offers the best value for most UK EV owners, particularly those with compatible smart chargers or Tesla vehicles. The 7p/kWh rate is unbeatable, and the whole-home benefit during off-peak hours provides additional savings.

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2. OVO Charge Anytime: Smart Charging Revolution

Off-Peak Rate: 7p/kWh (intelligent scheduling, typically 6-8 hours)
Peak Rate: 24p/kWh (remaining hours)
Standing Charge: 47p/day (£171.55/year)
Smart Features: AI-powered charging optimisation

How OVO Charge Anytime Works

OVO Charge Anytime takes a different approach to EV charging tariffs. Instead of fixed cheap-rate windows, it uses artificial intelligence to schedule your charging during the cheapest and greenest times based on real-time grid conditions.

Unique Features:

• AI-powered scheduling: Algorithm finds cheapest overnight windows
• Flexible charging hours: Not locked to 23:30-05:30 (varies nightly)
• Carbon-aware charging: Prioritises renewable energy availability
• Set and forget: Tell app when you need car ready, it handles the rest
• Guaranteed rate: 7p/kWh for scheduled EV charging regardless of actual time

How It Differs from Octopus Intelligent Go

Eligibility Requirements

• Smart meter (SMETS2 required)
• Compatible smart charger OR compatible EV
• Compatible chargers: Ohme, Pod Point, Wallbox, EO, Hypervolt, Easee, Sync EV
• Compatible vehicles: Extensive list including Tesla, VW, Audi, Nissan, Hyundai, Kia

Real Cost Examples (OVO Charge Anytime)

Example 1: Nissan Leaf - 8,000 miles/year

• Annual EV consumption: 2,400 kWh
• Charging cost: 2,400 kWh × £0.07 = £168
• Standing charge: £171.55
• Total annual cost: £339.55 (£28.30/month)

Example 2: Tesla Model 3 - 12,000 miles/year

• Annual EV consumption: 3,000 kWh
• Charging cost: 3,000 kWh × £0.07 = £210
• Standing charge: £171.55
• Total annual cost: £381.55 (£31.80/month)

Important Note: Unlike Octopus Intelligent Go, OVO Charge Anytime's 7p/kWh rate applies only to EV charging, not whole-home electricity during off-peak hours. This means household appliances used overnight still cost 24p/kWh.

Who Benefits Most:

• Owners of EVs with built-in smart charging (no separate charger needed)
• Those who prefer AI optimisation over fixed schedules
• Households with minimal overnight electricity usage beyond EV charging

Who Should Choose Octopus Instead:

• Households with high overnight electricity usage (washing machines, dishwashers, storage heaters)
• Those wanting guaranteed fixed cheap-rate windows
• Anyone using significant non-EV electricity 23:30-05:30

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3. British Gas Electric Drivers Tariff

Off-Peak Rate: 9p/kWh (00:00-05:00, 5 hours)
Peak Rate: 27p/kWh (05:00-00:00)
Standing Charge: 50p/day (£182.50/year)
Smart Features: None (basic time-of-use tariff)

How British Gas Electric Drivers Works

British Gas offers a straightforward EV tariff with no smart charging requirements. The cheaper overnight rate (9p/kWh) applies automatically between midnight and 5am, regardless of whether you have a smart charger.

Key Features:

• No smart charger needed: Works with any home charger
• Simple pricing: Fixed 5-hour cheap window nightly
• Whole-home benefit: All electricity midnight-5am charged at 9p/kWh
• British Gas reliability: Established energy supplier with extensive support
• Easy switching: No compatibility checks or app setup

Eligibility Requirements

• Smart meter (SMETS1 or SMETS2)
• Electric vehicle ownership (may request proof)
• British Gas customer (or willing to switch)

Real Cost Examples (British Gas Electric Drivers)

Example 1: Nissan Leaf - 8,000 miles/year

• Annual consumption: 2,400 kWh
• Charging cost: 2,400 kWh × £0.09 = £216
• Standing charge: £182.50
• Total annual cost: £398.50 (£33.20/month)

Example 2: Tesla Model 3 - 12,000 miles/year

• Annual consumption: 3,000 kWh
• Charging cost: 3,000 kWh × £0.09 = £270
• Standing charge: £182.50
• Total annual cost: £452.50 (£37.70/month)

Comparison vs Octopus Intelligent Go

• 8,000 miles: British Gas £398.50 vs Octopus £335.90 = £62.60 more expensive
• 12,000 miles: British Gas £452.50 vs Octopus £377.90 = £74.60 more expensive
• 15,000 miles: British Gas £568.10 vs Octopus £467.90 = £100.20 more expensive

When to Choose British Gas:

• No compatible smart charger or EV for intelligent tariffs
• Prefer established big-brand energy supplier
• Want simple pricing without app management
• Already British Gas customer with bundled services

When to Choose Octopus/OVO Instead:

• Have compatible smart equipment (saves £60-100/year)
• Comfortable with smart technology and apps
• Want absolute cheapest rates (7p vs 9p/kWh)

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4. E.ON Next Drive

Off-Peak Rate: 9p/kWh (00:00-07:00, 7 hours)
Peak Rate: 28p/kWh (07:00-00:00)
Standing Charge: 52p/day (£189.80/year)
Smart Features: Optional smart charging integration

How E.ON Next Drive Works

E.ON's EV tariff offers a generous 7-hour overnight window at 9p/kWh, making it easier to charge larger battery EVs fully overnight without intelligent scheduling.

Key Features:

• Longest cheap window: 7 hours (midnight to 7am)
• Whole-home benefit: All electricity usage midnight-7am at 9p/kWh
• No smart charger required: Works with basic chargers
• Optional smart features: Can integrate with compatible chargers for optimisation
• Solar Export option: Can add solar export payments if you have panels

Eligibility Requirements

• Smart meter (SMETS2 preferred)
• Electric vehicle ownership
• E.ON Next customer (or willing to switch)

Real Cost Examples (E.ON Next Drive)

Example 1: Nissan Leaf - 8,000 miles/year

• Annual consumption: 2,400 kWh
• Charging cost: 2,400 kWh × £0.09 = £216
• Standing charge: £189.80
• Total annual cost: £405.80 (£33.80/month)

Example 2: Tesla Model 3 - 12,000 miles/year

• Annual consumption: 3,000 kWh
• Charging cost: 3,000 kWh × £0.09 = £270
• Standing charge: £189.80
• Total annual cost: £459.80 (£38.30/month)

Advantages:

• Longer cheap window suits larger batteries (70-80kWh EVs)
• Good for households with early morning electricity usage (6-7am)
• No requirement for smart charger compatibility

Disadvantages:

• Higher standing charge (£189.80 vs £167.90 Octopus)
• More expensive off-peak rate (9p vs 7p/kWh)
• Higher peak rate (28p vs 24p/kWh)

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5. Scottish Power EV Tariff

Off-Peak Rate: 9p/kWh (23:30-07:30, 8 hours)
Peak Rate: 29p/kWh (07:30-23:30)
Standing Charge: 48p/day (£175.20/year)
Smart Features: None (basic time-of-use)

How Scottish Power EV Works

Scottish Power offers the longest cheap-rate window of any UK EV tariff at 8 hours nightly. This makes it particularly suitable for larger battery EVs or households wanting maximum flexibility for overnight appliance usage.

Key Features:

• 8-hour cheap window: Longest off-peak period (23:30-07:30)
• Whole-home benefit: All usage during 8-hour window at 9p/kWh
• No smart requirements: Works with any charger
• 100% renewable: Green electricity from renewable sources
• Flexible for large batteries: Easily charge 70-100kWh batteries fully overnight

Real Cost Examples (Scottish Power EV)

Example 1: Nissan Leaf - 8,000 miles/year

• Annual consumption: 2,400 kWh
• Charging cost: 2,400 kWh × £0.09 = £216
• Standing charge: £175.20
• Total annual cost: £391.20 (£32.60/month)

Example 2: Ford Mustang Mach-E (88kWh) - 15,000 miles/year

• Annual consumption: 4,500 kWh (at 3.3 miles/kWh)
• Charging cost: 4,500 kWh × £0.09 = £405
• Standing charge: £175.20
• Total annual cost: £580.20 (£48.35/month)

Best For:

• Large battery EVs (75kWh+) needing extended charging time
• Households with significant early morning usage (6-7:30am)
• Families running multiple overnight appliances
• Those valuing 100% renewable electricity

Less Suitable For:

• Smaller battery EVs (under 50kWh) where 8 hours is unnecessary
• Tech-savvy owners with smart chargers (Octopus saves more)
• Those with minimal overnight household usage

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6. Utility Warehouse EV Tariff

Off-Peak Rate: 10p/kWh (00:00-05:00, 5 hours)
Peak Rate: 26p/kWh (05:00-00:00)
Standing Charge: 45p/day (£164.25/year)
Smart Features: None

How Utility Warehouse EV Works

Utility Warehouse offers an EV tariff bundled with their multi-service model (energy, broadband, mobile). The rates are competitive but not market-leading, with appeal primarily for existing UW customers.

Key Features:

• Cashback rewards: Up to 10% cashback for UW partners
• Multi-service discounts: Bundle energy with broadband/mobile
• Lowest standing charge: £164.25/year (£3 less than Octopus)
• Simple pricing: Fixed 5-hour midnight-5am window
• No tech requirements: Works with any charger

Real Cost Examples (Utility Warehouse EV)

Example 1: Nissan Leaf - 8,000 miles/year

• Annual consumption: 2,400 kWh
• Charging cost: 2,400 kWh × £0.10 = £240
• Standing charge: £164.25
• Gross cost: £404.25
• With 10% cashback: £363.80
• Total annual cost: £363.80 (£30.30/month with cashback)

Example 2: Tesla Model 3 - 12,000 miles/year

• Annual consumption: 3,000 kWh
• Charging cost: 3,000 kWh × £0.10 = £300
• Standing charge: £164.25
• Gross cost: £464.25
• With 10% cashback: £417.80
• Total annual cost: £417.80 (£34.80/month with cashback)

When to Consider:

• Already a Utility Warehouse customer/partner
• Want bundled services (energy + broadband + mobile)
• Qualify for 10% cashback scheme
• Prefer simplicity over absolute cheapest rates

When to Avoid:

• Not interested in UW partner scheme (rates not competitive)
• Have compatible smart charger (Octopus saves significantly more)
• Want rock-bottom rates without cashback complexity

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EV Tariff Comparison Tables

Quick Comparison: Off-Peak Rates & Windows

Annual Cost Comparison by Mileage

Assuming 3.5 miles/kWh average efficiency:

Savings vs Standard Tariff:

• 10,000 miles: Octopus saves £480/year vs standard tariff
• 15,000 miles: Octopus saves £682/year vs standard tariff
• 20,000 miles: Octopus saves £883/year vs standard tariff

Peak Rate Comparison

Important if you use electricity during daytime/evening:

Important: If you use significant electricity during peak hours, the higher peak rates can erode EV charging savings. Calculate your total electricity usage, not just EV charging.

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How to Choose the Right EV Tariff

Decision Framework

Use this flowchart to find your ideal tariff:

Step 1: Do you have a smart charger or compatible EV?

• Yes (Ohme, Wallbox, Hypervolt, Tesla) → Consider Octopus Intelligent Go or OVO Charge Anytime
• No → Consider British Gas, E.ON, Scottish Power, or Utility Warehouse

Step 2: What's your annual mileage?

• Under 5,000 miles: EV tariff may not be worthwhile (savings under £150/year)
• 5,000-10,000 miles: Any EV tariff saves £200-300/year
• 10,000-15,000 miles: Octopus/OVO save £400-500/year
• 15,000+ miles: Octopus/OVO essential (save £600+/year)

Step 3: How much electricity do you use overnight (non-EV)?

• High usage (dishwasher, washing machine, storage heaters nightly) → Choose Octopus Intelligent Go for whole-home benefit
• Low usage (just EV charging) → OVO Charge Anytime or Octopus equally good
• Very high usage → Consider longer windows (Scottish Power 8 hours, E.ON 7 hours)

Step 4: What's your battery size?

• Small battery (under 50kWh): Any 5-6 hour window sufficient
• Medium battery (50-70kWh): 6-7 hour windows ideal
• Large battery (70-100kWh): Scottish Power 8-hour or E.ON 7-hour windows recommended

Step 5: Smart features preference?

• Want AI optimisation: OVO Charge Anytime
• Want guaranteed fixed times: Octopus Intelligent Go
• Prefer simple, no tech: British Gas, E.ON, Scottish Power

Recommended Tariffs by Scenario

Best Overall: Octopus Intelligent Go

• Cheapest off-peak rate (7p/kWh)
• Whole-home benefit during cheap hours
• Excellent app and customer service
• Best for: 90% of UK EV owners with compatible equipment

Best for Tech Enthusiasts: OVO Charge Anytime

• AI-powered optimisation
• Carbon-aware charging
• Flexible scheduling
• Best for: Those who want cutting-edge smart features

Best for Large Batteries: Scottish Power EV

• 8-hour overnight window
• 100% renewable electricity
• Whole-home benefit
• Best for: EVs with 75kWh+ batteries, large families

Best for Simplicity: British Gas Electric Drivers

• No smart charger required
• Trusted big-brand supplier
• Straightforward pricing
• Best for: Those wanting hassle-free EV charging without tech

Best for Bundling: Utility Warehouse EV

• Cashback for partners
• Multi-service discounts
• Low standing charge
• Best for: Existing UW customers wanting bundled services

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Detailed Cost Calculations: Real-World Examples

Example 1: Typical UK Commuter (10,000 miles/year)

Vehicle: Nissan Leaf (40kWh battery, 3.5 miles/kWh)
Annual consumption: 2,857 kWh (10,000 ÷ 3.5)
Charging pattern: 80% home (2,285 kWh), 20% public (572 kWh)

Octopus Intelligent Go:

• Home charging: 2,285 kWh × £0.07 = £160
• Public charging: 572 kWh × £0.65 (average rapid) = £372
• Standing charge: £168
• Total: £700/year (£58/month)

British Gas Electric Drivers:

• Home charging: 2,285 kWh × £0.09 = £206
• Public charging: 572 kWh × £0.65 = £372
• Standing charge: £183
• Total: £761/year (£63/month)

Standard tariff (no EV tariff):

• Home charging: 2,285 kWh × £0.24 = £548
• Public charging: 572 kWh × £0.65 = £372
• Standing charge: £168
• Total: £1,088/year (£91/month)

Savings with Octopus Intelligent Go: £388/year vs standard tariff

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Example 2: High-Mileage Driver (18,000 miles/year)

Vehicle: Tesla Model 3 Long Range (75kWh battery, 4.0 miles/kWh)
Annual consumption: 4,500 kWh (18,000 ÷ 4.0)
Charging pattern: 90% home (4,050 kWh), 10% Supercharger (450 kWh)

Octopus Intelligent Go:

• Home charging: 4,050 kWh × £0.07 = £283
• Supercharger: 450 kWh × £0.67 = £302
• Standing charge: £168
• Total: £753/year (£63/month)

OVO Charge Anytime:

• Home charging: 4,050 kWh × £0.07 = £283
• Supercharger: 450 kWh × £0.67 = £302
• Standing charge: £172
• Total: £757/year (£63/month)

Standard tariff (no EV tariff):

• Home charging: 4,050 kWh × £0.24 = £972
• Supercharger: 450 kWh × £0.67 = £302
• Standing charge: £168
• Total: £1,442/year (£120/month)

Savings with Octopus Intelligent Go: £689/year vs standard tariff

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Example 3: Family with Large EV (12,000 miles/year)

Vehicle: Kia EV6 GT-Line (77.4kWh battery, 3.3 miles/kWh)
Annual consumption: 3,636 kWh (12,000 ÷ 3.3)
Charging pattern: 75% home (2,727 kWh), 25% public (909 kWh)
Household: Also run dishwasher and washing machine overnight

Octopus Intelligent Go (with household benefit):

• EV charging: 2,727 kWh × £0.07 = £191
• Household overnight (est. 800 kWh/year): 800 kWh × £0.07 = £56
• Household daytime (est. 2,500 kWh/year): 2,500 kWh × £0.245 = £613
• Public charging: 909 kWh × £0.65 = £591
• Standing charge: £168
• Total: £1,619/year (£135/month)

OVO Charge Anytime (EV only at cheap rate):

• EV charging: 2,727 kWh × £0.07 = £191
• Household overnight (est. 800 kWh/year): 800 kWh × £0.24 = £192 (no discount)
• Household daytime (est. 2,500 kWh/year): 2,500 kWh × £0.24 = £600
• Public charging: 909 kWh × £0.65 = £591
• Standing charge: £172
• Total: £1,746/year (£146/month)

Standard tariff:

• EV charging: 2,727 kWh × £0.24 = £654
• Household (3,300 kWh/year): 3,300 kWh × £0.24 = £792
• Public charging: 909 kWh × £0.65 = £591
• Standing charge: £168
• Total: £2,205/year (£184/month)

Key Insight: For this family, Octopus Intelligent Go saves an additional £127/year vs OVO Charge Anytime due to whole-home overnight benefit. Total savings vs standard tariff: £586/year.

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Switching to an EV Tariff: Complete Guide

Step 1: Check Eligibility

Before switching, verify you meet requirements:

1. Smart meter: Check you have SMETS2 (or working SMETS1)

   • Look at meter display – should show "SMETS2" or working communication
   • Contact current supplier to confirm smart meter status

2. Compatible equipment: For intelligent tariffs (Octopus, OVO)

   • Check charger brand against compatibility list
   • OR check EV model against compatibility list
   • Contact tariff provider if unsure

3. Home charging capability:

   • Off-street parking with installed home charger
   • OR ability to charge via 3-pin plug overnight

4. Exit fees: Check current tariff for early exit penalties

   • Fixed contracts may have £30-60 exit fees per fuel
   • Variable tariffs typically have no exit fees

Step 2: Calculate Your Potential Savings

Use this formula to estimate annual savings:

Annual EV electricity consumption (kWh) = Annual mileage ÷ Vehicle efficiency (miles/kWh)

Example: 12,000 miles ÷ 3.5 miles/kWh = 3,429 kWh/year

Current cost = 3,429 kWh × £0.24 = £823
Octopus Intelligent Go cost = 3,429 kWh × £0.07 = £240
Annual saving = £583

If savings exceed £200/year, switching is worthwhile.

Step 3: Choose Your Tariff

Based on the decision framework earlier:

• Have smart charger: Octopus Intelligent Go (7p/kWh + whole-home benefit)
• Have compatible EV only: OVO Charge Anytime (7p/kWh, AI optimisation)
• No smart equipment: British Gas or E.ON (9p/kWh, simple)
• Large battery (75kWh+): Scottish Power (8-hour window)

Step 4: Sign Up Process

For Octopus Intelligent Go:

1. Visit octopus.energy/smart/intelligent-go
2. Enter postcode and current supplier details
3. Provide vehicle or charger details for compatibility check
4. Complete sign-up (takes 15-20 minutes)
5. Switch completes in 17-21 days (handled by Octopus)
6. Download Octopus app and connect vehicle/charger
7. Set charging preferences in app

For OVO Charge Anytime:

1. Visit ovoenergy.com/electric-cars
2. Complete online switch form
3. Select "Charge Anytime" add-on during sign-up
4. Switch completes in 21 days
5. Download OVO app and connect charger/vehicle
6. Configure charging schedule in app

For British Gas Electric Drivers:

1. Visit britishgas.co.uk/electric-vehicles
2. Complete online quote and switch
3. Provide EV ownership proof if requested
4. Switch completes in 21 days
5. Tariff automatically applies midnight-5am (no app needed)

Step 5: Set Up Smart Charging (Intelligent Tariffs)

Octopus Intelligent Go Setup:

1. Install Octopus app (iOS/Android)
2. Navigate to "Intelligent" section
3. Select your charger brand OR vehicle model
4. Follow authentication steps (login to charger app or Tesla account)
5. Grant Octopus API access to charger/vehicle
6. Set "ready by" time (e.g., 7am daily)
7. Octopus automatically schedules charging during cheapest hours

OVO Charge Anytime Setup:

1. Install OVO app
2. Navigate to "Charge Anytime" section
3. Connect charger or vehicle via app
4. Set charging preferences (ready by time, minimum charge level)
5. OVO AI schedules optimal charging times
6. Receive notifications when charging starts/completes

Step 6: Optimise Your Savings

Maximise savings with these strategies:

1. Shift appliance usage to off-peak hours (Octopus whole-home benefit)

   • Run dishwasher, washing machine 23:30-05:30
   • Use programmable timers on appliances
   • Potential extra savings: £50-100/year

2. Charge to 80% daily, 100% before long trips

   • Reduces charging time needed
   • Improves battery longevity
   • Allows flexibility for last-minute trips

3. Monitor usage via app

   • Check monthly consumption
   • Verify charging happens during cheap hours
   • Identify any peak-hour usage to shift

4. Consider solar panels (long-term)

   • Further reduce charging costs
   • Many EV tariffs compatible with solar export
   • Potential savings: Additional £200-400/year

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Common Questions & Troubleshooting

Can I switch if I'm in a rental property?

Yes, but with landlord permission:

• Check tenancy agreement for restrictions on changing energy supplier
• Inform landlord of intent to switch (usually not a problem)
• Consider exit strategy – can you switch back when leaving?
• Smart meter implications – switching may affect meter if landlord controls account

Best approach: Choose tariffs with no exit fees (Octopus, OVO) so you can easily switch back when tenancy ends.

What happens if I don't charge every night?

No problem – EV tariffs have no minimum usage:

• Octopus Intelligent Go: Still get 7p/kWh whenever you charge 23:30-05:30
• OVO Charge Anytime: AI adapts to your irregular charging pattern
• British Gas/E.ON/Scottish Power: Cheap rate available nightly whether you use it or not

Consideration: If you charge less than 2-3 times per week, calculate if savings justify potential higher peak rates for household usage.

Can I use public charging on an EV tariff?

Absolutely – EV tariffs only affect your home electricity:

• Home charging uses your EV tariff rates
• Public charging costs whatever the network charges (typically 45-85p/kWh)
• No restrictions on using public chargers
• Mix of home and public charging is common

Optimal strategy: Charge at home overnight (7-10p/kWh) for daily use, use public rapid charging (65-85p/kWh) only for long trips.

What if my charger isn't compatible with intelligent tariffs?

Options if you have incompatible charger:

1. Choose non-intelligent tariff: British Gas, E.ON, or Scottish Power (9p/kWh, no smart charger needed)
2. Use vehicle's built-in scheduling: Set vehicle to charge midnight-5am, use British Gas tariff
3. Upgrade charger: Invest in compatible smart charger (£500-800) – pays back in 2-3 years via Octopus savings
4. Manual scheduling: Use plug timer with basic charger (£15-30)

Calculation example:

• Compatible smart charger cost: £600
• Annual savings Octopus (7p) vs British Gas (9p): ~£80/year (10,000 miles)
• Plus whole-home benefit savings: ~£50/year
• Total extra savings: £130/year
• Payback period: 4.6 years

Verdict: If keeping EV long-term, upgrading to compatible charger worthwhile.

Do EV tariffs work with solar panels?

Yes, and they're highly complementary:

How it works:

• Solar generates electricity during daytime (free EV charging if home)
• Any surplus exported to grid (earn 15p/kWh with SEG)
• Overnight charging from grid uses EV tariff (7-10p/kWh)

Best tariffs for solar:

• Octopus Intelligent Go + Outgoing Octopus: 7p import, 15p export
• E.ON Next Drive + Solar Export: 9p import, 12p export
• OVO Charge Anytime + Export: 7p import, variable export

Optimal strategy:

• Charge from solar during daytime when possible (free)
• Top up overnight from grid at 7-9p/kWh if needed
• Export excess solar at 12-15p/kWh

Annual savings example (5kW solar + EV):

• Solar self-consumption (2,500 kWh): £600 saved (vs 24p/kWh)
• Solar export (2,000 kWh): £300 earned (at 15p/kWh)
• Overnight EV charging (1,500 kWh): £105 cost (at 7p/kWh)
• Net annual benefit: £795 (vs £960 without solar)

Can I switch back if I don't like the EV tariff?

Yes, easily:

• No exit fees on Octopus Intelligent Go, OVO Charge Anytime (variable tariffs)
• 21-day switching process to return to standard tariff or different supplier
• No penalties for switching multiple times per year
• Smart meter remains – can use with any future tariff

Recommendation: Try an EV tariff for 2-3 months. Monitor total bills including household usage. If peak-hour costs outweigh EV savings, switch back.

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Advanced Tips: Maximising EV Charging Savings

Strategy 1: Whole-Home Off-Peak Optimisation (Octopus Only)

Octopus Intelligent Go's whole-home benefit is a hidden gem:

Shift these to 23:30-05:30:

• Dishwasher (1.8 kWh per cycle): Save 31p per load = £113/year (365 loads)
• Washing machine (1.0 kWh): Save 17p per load = £89/year (520 loads)
• Tumble dryer (3.5 kWh): Save 59p per load = £61/year (104 loads)
• Storage heaters (8 kWh/night): Save £1.36/night = £496/year
• Immersion heater (3 kWh/night): Save 51p/night = £186/year

Total potential savings: £300-600/year beyond EV charging

How to implement:

• Use appliance delay timers (most modern appliances have them)
• Buy plug timers for non-programmable devices (£15-25)
• Set timers for 00:30 start (within cheap window)
• Ensure overnight operation won't disturb sleep (noise consideration)

Strategy 2: Pre-Heating/Pre-Cooling While Plugged In

Many EVs allow cabin pre-conditioning while charging:

Winter pre-heating benefits:

• Heat cabin using mains electricity (7-10p/kWh) instead of battery
• Preserve 5-10 miles range by not using battery for heating
• Start journeys in warm car without range penalty
• Annual savings: ~£40-60 (120 days × 0.5p/day)

Summer pre-cooling benefits:

• Cool cabin before journey
• Reduce AC usage during initial drive
• Annual savings: ~£20-30 (60 days)

How to set up:

• Tesla: Schedule departure time in vehicle or app
• Other EVs: Check manufacturer app for pre-conditioning options
• Set departure time 30 mins before leaving

Strategy 3: Combining EV Tariff with Agile Pricing

Advanced users can combine Octopus Intelligent Go with Agile Octopus (import/export):

Agile Octopus:

• Half-hourly pricing based on wholesale electricity prices
• Prices sometimes go negative (you get paid to use electricity)
• Average overnight rates often below 7p/kWh
• Can export to grid at premium prices during peak demand

Strategy:

1. Switch to Agile Octopus (not Intelligent Go)
2. Use smart charger automation to charge when prices < 5p/kWh
3. If you have home battery, charge battery during negative pricing
4. Discharge to grid during peak prices (30-40p/kWh)

Potential savings: £100-200/year extra for actively managed systems

Complexity: High – requires daily monitoring and automation setup

Best for: Tech-savvy users with home battery systems

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Future UK EV Tariff Trends (2025-2026)

Expected Developments

1. Vehicle-to-Grid (V2G) Tariffs

• EVs discharge to grid during peak demand
• Earn 30-50p/kWh for exported electricity
• Potential earnings: £300-600/year
• Currently available: OVO V2G trial, Octopus V2G pilot

2. Ultra-Cheap Rates Below 5p/kWh

• As renewable capacity grows, overnight surplus increases
• Some suppliers may offer 3-5p/kWh off-peak
• Already happening occasionally on Agile Octopus

3. Dynamic Pricing Integration

• AI-powered pricing that responds to real-time grid conditions
• Could see rates as low as 1-2p/kWh during high wind/solar periods
• OVO Charge Anytime already moving in this direction

4. Solar + EV Bundled Tariffs

• Integrated packages for solar panel owners
• Optimise between solar generation, battery storage, EV charging, grid import/export
• Potential total savings: £800-1,200/year

5. Standardised Smart Charging Protocols

• All EVs and chargers using universal smart charging standard
• Eliminates compatibility issues
• Every EV owner can access intelligent tariffs

What This Means for You

If buying EV in 2025:

• Ensure vehicle has smart charging capability (most 2024+ models do)
• Choose charger with V2G capability if available (future-proofing)
• Consider solar panels as part of overall EV strategy

If already have EV:

• Lock in current 7-9p/kWh rates (excellent value)
• Monitor for V2G trials if you have compatible vehicle (Nissan Leaf, MG 5 EV, Cupra Born)
• Consider upgrading to smart charger if not already installed

Looking ahead to 2026:

• Expect more suppliers to enter market
• Competition may drive rates below 7p/kWh
• V2G could become mainstream (earn money from your EV)

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Frequently Asked Questions

How much does it cost to charge an electric car at home in the UK?

On an EV tariff: £200-£600 per year depending on mileage. Specifically:

• 8,000 miles/year: £160-200 on Octopus (7p/kWh), £200-250 on British Gas (9p/kWh)
• 12,000 miles/year: £240-300 on Octopus, £300-370 on British Gas
• 15,000 miles/year: £300-370 on Octopus, £370-460 on British Gas

On a standard tariff (24p/kWh): £550-£1,000+ per year – significantly more expensive.

What is the cheapest EV electricity tariff in the UK 2025?

Octopus Intelligent Go is the cheapest at 7p/kWh off-peak (23:30-05:30), matched only by OVO Charge Anytime at the same rate. However, Octopus offers a slight advantage with its whole-home benefit (all electricity 23:30-05:30 at 7p/kWh, not just EV charging).

Is it worth getting an EV tariff?

Yes, if you:

• Drive 7,000+ miles annually
• Charge at home regularly (3+ times per week)
• Have off-street parking with home charger
• Use minimal electricity during peak hours

Typical savings: £300-£700/year vs standard tariffs. For most UK EV owners, an EV tariff is essential for affordable running costs.

Can I charge my EV for free in the UK?

Not completely free, but very cheap:

• Home charging on EV tariff: 7-10p/kWh (£2-3 for full charge)
• Some workplace chargers: Free for employees
• Some destination chargers: Free at hotels, supermarkets (slow 7kW charging)
• Pod Point/Tesco partnership: Currently free (ending soon, check locally)

Cheapest option: Home overnight charging on Octopus Intelligent Go (7p/kWh) = 90% cheaper than petrol.

Do I need a smart meter for an EV tariff?

Yes, all UK EV tariffs require a smart meter (SMETS2 or working SMETS1). Smart meters enable:

• Time-of-use pricing (different rates at different times)
• Automatic billing based on actual usage
• Smart charging integration (for Octopus, OVO)

If you don't have a smart meter:

1. Request free installation from energy supplier
2. Installation takes 2-3 hours
3. Wait 2-4 weeks for activation
4. Then switch to EV tariff

What's the difference between Octopus Intelligent Go and OVO Charge Anytime?

Both offer 7p/kWh off-peak, but differ in implementation:

Octopus Intelligent Go:

• Fixed 6-hour window (23:30-05:30)
• Whole-home benefit: All usage during window at 7p/kWh
• Requires compatible charger or vehicle
• Better for: Households with high overnight usage

OVO Charge Anytime:

• Variable window (AI selects cheapest hours)
• EV-only benefit: Only EV charging at 7p/kWh, household usage at 24p/kWh
• Broader charger compatibility
• Better for: Low overnight household usage, prefer AI optimisation

Verdict: Octopus saves more for most households due to whole-home benefit.

Can I use an EV tariff without a home charger?

Technically yes, but not practical:

• You can charge via 3-pin plug during off-peak hours
• Charging is very slow (10-12 hours for 30 miles range)
• No smart charging automation
• Safety concerns with prolonged 3-pin charging

Better approach: If you have off-street parking, invest in home charger (£500-1,000 installed). Pays back within 2-3 years via:

• Faster charging (7kW = 30 miles per hour)
• Access to intelligent tariffs with automation
• Safer than 3-pin charging long-term

How do I switch to an EV tariff?

Simple 5-step process:

1. Check you have smart meter (contact current supplier if unsure)
2. Compare tariffs using this guide (Octopus Intelligent Go for most people)
3. Sign up online with chosen supplier (takes 15-20 minutes)
4. Wait 17-21 days for switch to complete (handled automatically)
5. Set up smart charging if using intelligent tariff (Octopus/OVO apps)

No need to:

• Contact old supplier (new supplier handles it)
• Pay exit fees (most EV tariffs are variable with no exit fees)
• Change meter or equipment (works with existing smart meter)

Are EV tariffs worth it for low mileage drivers?

Depends on annual mileage:

• Under 5,000 miles: Savings ~£100-150/year – marginal benefit
• 5,000-7,000 miles: Savings ~£200-250/year – worthwhile
• 7,000+ miles: Savings £300-700/year – essential

Additional consideration: If you have high overnight household usage (washing machine, dishwasher, storage heaters), Octopus Intelligent Go whole-home benefit adds £100-200/year savings even with low EV mileage.

Verdict: Worthwhile for 7,000+ miles annually. Consider it for 5,000+ miles if you shift household usage to off-peak.

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Summary: Your EV Tariff Action Plan

Step 1: Calculate Your Potential Savings

1. Find your annual mileage
2. Check your vehicle's efficiency (miles/kWh) – find in manual or use 3.5 as average
3. Calculate annual kWh: Annual mileage ÷ efficiency
4. Current cost: kWh × £0.24 (standard rate)
5. EV tariff cost: kWh × £0.07 (Octopus) or £0.09 (British Gas)
6. Annual saving = Current cost - EV tariff cost

If saving > £200/year, proceed to Step 2.

Step 2: Check Your Equipment

• Have smart meter? Yes → Continue. No → Request installation from supplier.
• Have compatible smart charger? Yes → Choose Octopus or OVO. No → Choose British Gas or consider charger upgrade.
• Have compatible EV? Yes → Choose OVO if no smart charger. No → Choose non-intelligent tariff.

Step 3: Select Your Tariff

Best overall: Octopus Intelligent Go (7p/kWh + whole-home benefit)
Best if no smart equipment: British Gas Electric Drivers (9p/kWh, simple)
Best for large batteries: Scottish Power EV (8-hour window)
Best for AI features: OVO Charge Anytime (7p/kWh, intelligent scheduling)

Step 4: Sign Up and Switch

1. Visit supplier website
2. Complete online switch (15-20 mins)
3. Wait 17-21 days for automatic switch
4. Download app if intelligent tariff
5. Connect charger/vehicle to app
6. Start saving immediately

Step 5: Optimise Your Savings

• Shift appliances to off-peak hours (Octopus whole-home benefit)
• Pre-heat/cool vehicle while plugged in
• Monitor usage via app monthly
• Consider solar panels for long-term savings

Expected outcome: £300-£700/year savings vs standard tariff, with the most savings going to higher-mileage drivers on Octopus Intelligent Go.

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Final Recommendations

For 90% of UK EV owners: Choose Octopus Intelligent Go

• Cheapest rate (7p/kWh)
• Whole-home benefit
• Excellent app and service
• Maximum savings potential

If you don't have compatible equipment: Choose British Gas Electric Drivers

• No smart charger required
• Simple, reliable pricing (9p/kWh)
• Trusted big brand

If you're a tech enthusiast: Choose OVO Charge Anytime

• AI-powered optimisation
• Carbon-aware charging
• Cutting-edge features

If you have a large battery EV (75kWh+): Choose Scottish Power EV

• 8-hour cheap window
• 100% renewable
• Ample time for full charge

Remember: switching is free, takes 3 weeks, and you can switch again if unhappy. There's no risk in trying an EV tariff to see real-world savings on your bills.

Start saving today – the average UK EV owner on a standard tariff is overpaying £400-600 per year.