Adjust the page to suit you. Your choices are remembered.
← All tariff guides / Outfox the Market
Outfox Energy My EV is a smart time-of-use tariff designed for households that charge an electric vehicle at home. It provides a discounted electricity rate between midnight and 5:30am, followed by a higher standard rate from 5:30am until midnight. Unlike an EV-only charging add-on, the overnight price applies to all electricity used in the property during the qualifying period. This can include EV charging, battery storage, an immersion heater, washing machines, dishwashers and other timed household loads. The current product is structured as a dual-fuel tariff, meaning Outfox normally supplies both electricity and gas. It also requires monthly Direct Debit, online account management and a communicating smart meter capable of providing half-hourly electricity data. This guide was checked on 11 July 2026.
Outfox electricity prices vary according to region, tariff version and the quotation accepted by the customer. A current independent comparison published in June 2026 showed the following representative London prices: These figures should be treated as a regional illustration rather than a national quotation. A household in northern Scotland, Wales or another electricity region can receive different standard rates and standing charges. The customer's live Outfox quotation and Tariff Information Label take priority. The off-peak rate is comparatively low, but My EV also has a substantially higher daytime price. The tariff is therefore strongest where enough electricity can be moved into the overnight window.
Outfox divides each day into two charging periods. From midnight until 5:29am, electricity is charged at the discounted off-peak rate. From 5:30am until 11:59pm, electricity is charged at the standard rate. The qualifying period lasts five and a half hours. A customer does not need Outfox to control the vehicle or communicate directly with a particular charger. The smart meter records the household's total half-hourly electricity use and Outfox applies the appropriate tariff rate according to when the electricity was consumed. This makes My EV a whole-home time-of-use tariff. The cheap rate can therefore support more than the vehicle. A customer might programme a home battery to charge after midnight, heat a hot-water cylinder, run a dishwasher and charge an EV during the same period. However, the property's incoming electrical supply and charger installation must be capable of supporting the combined load safely. Large appliances should not all be scheduled simultaneously without considering the main fuse rating and any charger load-management system.
Suppose an EV needs 50 kWh from the grid. At an illustrative off-peak rate of 7.72p per kWh: 50 kWh ร ยฃ0.0772 = ยฃ3.86 At an illustrative standard rate of 30.71p: 50 kWh ร ยฃ0.3071 = ยฃ15.36 Charging the same amount overnight would therefore cost about ยฃ11.50 less in this example. For a vehicle averaging 3.5 miles per kilowatt hour, 50 kWh of battery energy could theoretically provide around 175 miles before accounting for weather, charging losses and driving conditions. The practical grid requirement will usually be higher than the energy reaching the battery because some electricity is lost during AC charging.
Consider a driver travelling 10,000 miles a year. If the vehicle averages 3.5 miles per kilowatt hour, the battery requires approximately: 10,000 รท 3.5 = 2,857 kWh. Assuming 90 per cent charging efficiency, the electricity drawn from the home is approximately: 2,857 รท 0.90 = 3,175 kWh. At 7.72p per kWh, that annual home charging would cost around: 3,175 ร ยฃ0.0772 = ยฃ245 At a flat rate of 26p, the same electricity would cost approximately: 3,175 ร ยฃ0.26 = ยฃ826 The apparent saving is around ยฃ581. That is not necessarily the household's total tariff saving. The customer also pays the higher My EV standard rate for electricity consumed outside the overnight period. A fair comparison must include every unit used by the home, not only the car.
This is one of the tariff's most important features. Some EV tariffs credit only electricity recognised as vehicle charging. My EV instead applies its time-based rate to the entire smart-meter supply. During the off-peak period, the discounted price can apply to: This can produce meaningful additional savings for a household with several flexible electrical loads. It can also make My EV attractive to a home with battery storage. The battery can charge overnight and supply some of the property's daytime demand, reducing the amount purchased at the higher standard rate. Battery calculations must account for round-trip losses and degradation. Charging 10 kWh into a battery with 90 per cent round-trip efficiency may return only about 9 kWh for later use.
A low EV rate should never be compared in isolation. Using the representative London figures, the standard rate of 30.71p is almost four times the 7.72p off-peak rate. A household using large amounts of electricity during the day and evening can lose some or all of the EV-charging saving. For example, compare My EV with an illustrative flat tariff charging 24p per kWh. The overnight saving is: 24p โ 7.72p = 16.28p per kWh. The daytime premium is: 30.71p โ 24p = 6.71p per kWh. A household shifting 2,500 kWh into the cheap period would save approximately ยฃ407 compared with the flat tariff. If it also used 4,000 kWh at the higher standard rate, the daytime premium would cost approximately ยฃ268. The resulting usage saving would fall to around ยฃ139 before comparing standing charges or gas prices. My EV is therefore most suitable where the off-peak proportion is high enough to overcome the daytime premium.
Using the same illustrative rates: The approximate break-even off-peak share is: Standard-rate premium divided by the difference between the My EV standard and off-peak rates. 6.71 รท 22.99 = approximately 29 per cent. In this simplified example, around 29 per cent of all household electricity would need to fall inside the My EV window before its average usage rate became lower than the 24p flat tariff. Standing-charge differences and gas costs would still need to be added.
My EV requires a compatible smart meter that communicates with Outfox and provides half-hourly electricity readings. The half-hourly data allows the supplier to separate consumption inside and outside the discounted period. A traditional meter with only a single cumulative register cannot provide the information required to bill the tariff accurately. Customers without a suitable meter can first join a standard Outfox tariff and request a smart-meter installation. Outfox says new smart-tariff applicants can be placed temporarily on a standard variable tariff while it tests the meter and establishes communications. The tariff may take up to 14 business days to activate after a supplier switch while test readings are completed.
A communication failure can affect eligibility and billing. Outfox says that where it cannot obtain the smart data needed for a smart tariff, the customer may be moved to the cheapest applicable standard variable tariff until communications are restored. It may also estimate peak and off-peak use from historical information where suitable data is available. The physical meter normally continues recording electricity even when remote communication fails. Customers should monitor their bills after joining My EV and confirm that both electricity rates appear correctly. Charging overnight provides no saving if the account has not yet been activated on the time-of-use tariff.
Outfox is not currently accepting prepayment-meter customers onto its smart tariffs. A household on Fox PAYG Standard would normally need to discuss changing the meter to credit mode or installing a suitable credit smart meter before joining My EV. Outfox may apply account checks or other conditions to a change in payment arrangement. The tariff is designed around monthly Direct Debit rather than topping up energy credit in advance.
Current Outfox terms describe My EV as a dual-fuel tariff. Electricity has separate standard and off-peak rates, while gas is charged through a fixed gas unit rate and daily standing charge. Monthly Direct Debit is required. This means the customer must assess the gas price as well as the EV charging rate. A household could save considerably on overnight electricity but pay more for gas than it would with another supplier. The comparison should therefore calculate:
The low overnight rate should not be allowed to hide an uncompetitive gas quotation.
The current terms describe My EV as a fixed-rate tariff for its contract term. Outfox's published tariff conditions also state that an exit charge can apply after the cooling-off period and before the final protected period. Current independent tariff comparisons describe My EV as carrying a ยฃ75 exit fee for each supplied fuel, potentially producing a ยฃ150 charge for a dual-fuel household leaving early. Customers should verify the exact exit-fee wording in their own Tariff Information Label because Outfox can publish revised product versions. This matters where a competing EV tariff later offers a lower peak rate or longer off-peak window. A projected saving of ยฃ200 over the remaining contract would be reduced to only ยฃ50 after ยฃ150 of exit fees.
My EV does not require a specific brand of vehicle or charger in the same way as some app-controlled EV tariffs. The essential measurement is completed by the smart meter rather than a direct software connection to the car. The charger or vehicle simply needs to be scheduled to draw electricity during the qualifying period. Drivers can generally use: The charging schedule should begin after the discounted period has genuinely started and stop before 5:30am. A charging session continuing beyond 5:30am will have its later electricity billed at the higher standard rate.
The amount delivered depends on the charger power. A 7 kW charger operating for 5.5 hours could theoretically draw: 7 ร 5.5 = 38.5 kWh. After charging losses, perhaps 34 to 36 kWh may reach the vehicle battery. At four miles per kilowatt hour, that could provide approximately 136 to 144 miles. A 3.6 kW charger could draw around 19.8 kWh during the same window, while a domestic three-pin connection may provide only around 12 kWh. A driver needing more than the overnight window can start with some electricity already in the battery, charge across several nights or accept that the remainder will be billed at the standard rate.
Solar panels do not directly produce electricity during the midnight-to-5:30am period, but they can still affect the tariff comparison. A solar household may use relatively little high-priced daytime grid electricity because the panels supply some daytime loads. A battery can be charged using cheap overnight electricity and then discharged during the expensive daytime period. The potential value of battery shifting is approximately:
Using the representative rates, the gross difference is around 22.99p per kWh before losses. At 90 per cent efficiency, the effective purchase cost of each returned battery unit is approximately 8.58p before degradation. Replacing electricity that would otherwise cost 30.71p could therefore create a substantial margin. Actual savings depend on battery capacity, cycle limits, household demand and whether a separate export tariff rewards solar electricity more highly.
Outfox My EV may suit a household that: - Can move at least 25 to 35 per cent of total electricity use overnight It may be less suitable for: - Customers needing more than five and a half hours of cheap charging every night Outfox My EV combines a strong overnight electricity rate with a comparatively expensive daytime period. Its whole-home structure creates opportunities beyond vehicle charging, especially for battery storage and timed appliances. The correct comparison must include every unit used by the home, regional standing charges, gas prices, charging losses and potential exit fees. The cheapest EV rate is valuable only when the household can use it often enough to outweigh the rest of the tariff.
Enter your postcode to see live UK tariffs side by side.
Compare Tariffs Now →