For many electric vehicle owners in Redhill, Earlswood, Merstham, Reigate, Nutfield and Salfords, the most convenient place to charge is at home. If you have a driveway or another form of off-street parking, a dedicated home charger can be far more practical than relying on public chargepoints.
However, fitting a charger is only part of the solution. The charger, electrical installation and tariff must work together if you want to make genuine use of cheaper overnight electricity.
A correctly configured smart charger can charge your car when electricity is less expensive, avoid peak periods, balance demand with the rest of your property and, where suitable, use surplus solar energy. A basic charger or poorly configured timer may leave you charging at the most expensive time of day.
Why off-peak charging suits Redhill drivers
Redhill has a varied mix of housing. Some properties have generous driveways, while others, particularly older terraces and homes closer to the station, may have limited parking or no private driveway at all. Newer developments around Redhill, Reigate, Salfords and Merstham may have allocated parking, garages or shared parking areas requiring a different charging approach.
For commuters using Redhill station, the typical routine is straightforward: leave home in the morning, return in the early evening and plug the car in. The problem is that early evening is often a peak electricity period. Charging immediately after returning home could cost more than waiting until the overnight window begins.
Surrey County Council’s electric vehicle guidance confirms that home charging is usually the most economical option for households with off-street parking. For residents without a driveway, Surrey is also expanding on-street charging, including Connected Kerb chargepoints with lower overnight rates at some locations.
How off-peak electricity windows work
The exact charging window depends on your electricity tariff.
Economy 7
Economy 7 provides a cheaper electricity rate for seven hours overnight. The precise start and end times vary by supplier, meter and sometimes the time of year. It is important not to assume that “overnight” always means midnight to 7am.
Economy 7 may be useful if you regularly charge your EV overnight, but remember that the daytime rate can be higher than a standard single-rate tariff. You need to compare your complete electricity usage, including household appliances and the standing charge.
EV-specific smart tariffs
EV tariffs may offer a shorter, cheaper window specifically for charging. For example, EDF’s current GoElectric information describes a lower overnight rate between 11pm and 6am, subject to the tariff’s terms, eligibility and changing prices. Other suppliers may offer different hours or use smart charging to select cheaper periods automatically.
Some tariffs also allow charging to move between several low-cost periods according to demand on the electricity system. This means your vehicle may not always charge at exactly the same time each night.
Savings depend on the actual tariff, standing charges, household consumption and driving habits. A low overnight rate is not automatically cheaper overall if most of your home’s electricity is used during a more expensive daytime period.
Why the charger you install matters
A smart EV charger normally provides:
- App-based scheduling
- Remote start and stop control
- Charging records and consumption information
- Compatibility with selected smart tariffs
- Load management or dynamic load balancing
- Solar charging or solar diversion on compatible systems
A basic or “dumb” charger simply supplies power when the vehicle requests it. It does not know whether electricity is currently cheap. If the car begins charging at 6pm, the charger may continue drawing power through the peak period unless a separate timer interrupts it.
Many vehicles also have built-in charging schedules. These can be useful, but relying solely on the in-car timer is not always ideal. Vehicle clocks, software updates, different drivers and tariff changes can all cause settings to be missed or overridden. An installer-set charger schedule, correctly linked to the electricity tariff, is generally easier to manage and can remain in place even when different vehicles use the chargepoint.
New private EV chargepoints in Great Britain are generally required to include smart functionality and default off-peak settings. Even so, the system still needs to be commissioned properly and configured for your specific tariff and electrical supply.
7kW charger versus a 3-pin granny charger
A 7kW home charger operates through a dedicated circuit and can typically add around 25–30 miles of range per hour, depending on the vehicle. An overnight session can provide a substantial amount of energy without requiring a long daytime stop at a public charger.
A 3-pin “granny” charger usually draws around 2–3kW. It can be useful as a temporary or occasional option, but it is much slower. An eight-hour overnight session may provide roughly 16–24kWh before charging losses and vehicle limitations are considered.
For regular EV use, a dedicated charger is usually the more practical option because it:
- Charges more quickly
- Uses a dedicated circuit rather than a general-purpose socket
- Provides better scheduling and monitoring
- Can support load management
- Is easier to integrate with solar panels and smart tariffs
A 3-pin charger may still charge during an off-peak window, but it will not normally provide the same level of tariff integration or automated control.
The electrical installation must be assessed first
Before scheduling overnight charging, an electrician should check whether your property can safely support the additional load.
A typical 7kW charger requires a dedicated 32-amp supply. This should normally be protected by its own RCBO in the consumer unit, rather than sharing a circuit with sockets or other household equipment. The installation also requires appropriate RCD protection, earthing arrangements, cable sizing and testing to current wiring standards.
A site survey should consider:
- The main incoming fuse and available supply capacity
- The condition and capacity of the consumer unit
- The cable route from the consumer unit to the charger
- Whether the property has single-phase or three-phase electricity
- Existing high-demand equipment, such as electric showers, ovens, heat pumps or immersion heaters
- Whether a consumer unit upgrade or DNO notification is required
Most homes in Redhill and the surrounding Surrey area have a single-phase supply. A single-phase connection is normally suitable for a 7kW home charger. Three-phase supplies can support higher total capacity and, with a compatible vehicle and charger, charging at up to 22kW. However, installing a 22kW charger does not automatically make a car charge at 22kW. The vehicle, supply and available network capacity must all support it.
For homes with limited spare capacity, dynamic load management can reduce or pause EV charging when other appliances are using electricity. For example, the charger may reduce its output when an electric shower and cooker are operating, then resume faster charging when demand falls.
This is particularly important in areas where several properties may be adding EV chargers or where a commercial site is planning multiple chargepoints. Local infrastructure information does not indicate that Redhill cannot accept new EV chargers generally, but electricity capacity is location-specific. Larger installations may need individual assessment by the electricity network operator.
It is also worth distinguishing between different utilities. Development discussions in Surrey may refer to Thames Water or Sutton & East Surrey/SES Water capacity, but water infrastructure is separate from the electricity network. An EV charger assessment checks the electrical supply, consumer unit and relevant electricity distribution network, not the water system.
Solar diversion and load management
If you have solar panels, a compatible charger can use surplus generation that would otherwise be exported to the grid. This is often called solar diversion or solar charging.
Solar charging can reduce the amount of electricity purchased from your supplier, but it is not always the cheapest option at every moment. If your smart tariff offers an exceptionally low overnight rate, buying electricity overnight may sometimes cost less than using solar energy during the day. A good setup allows you to choose between solar priority, scheduled off-peak charging or a combination of both.
For households with two EVs, heat pumps or battery storage, load management becomes even more valuable. It helps prevent the property from exceeding its supply capacity while still ensuring that vehicles are ready when needed.
What happens if you charge during peak periods?
Charging outside the cheap window does not usually create a separate “penalty” from the charger itself. The cost comes from the tariff.
Depending on your agreement, daytime or early-evening charging may be billed at the standard or peak rate. On a time-of-use tariff, regularly charging outside the agreed low-cost period can significantly reduce the benefit of switching. Some business tariffs may also include demand-related charges, making simultaneous charging of several vans particularly important to manage.
Do not assume that plugging in at 10:59pm always guarantees the cheap rate. The charger may take several minutes to connect, apply its randomised start delay or wait for the tariff schedule to become active. Set the schedule with a safe margin and confirm the supplier’s actual time bands.
How to verify that off-peak charging is working
After installation or a tariff change, check the system rather than relying on the app’s estimated savings.
- Confirm the off-peak hours and rates with your energy supplier.
- Check that the charger’s time zone, date and schedule are correct.
- Review the charger app to see when charging actually started and stopped.
- Compare the charger’s recorded kWh with your smart meter or half-hourly usage data.
- Check a complete electricity bill, including peak usage and standing charges.
- Look for unexpected daytime charging caused by a manual override, vehicle setting or loss of internet connection.
- Recheck the configuration when clocks change or your tariff is renewed.
A charger app may show energy delivered to the vehicle, while the meter records electricity drawn from the supply. Small differences are normal because of charging losses and equipment consumption.
A practical Salfords business example
Consider a small Salfords business operating two electric vans. Both vehicles return at around 6:30pm, but neither needs to be fully charged immediately. Each van requires approximately 35–40kWh for the following day.
Two 7kW chargers could provide the required energy overnight, but running both at full power may place a high demand on a single-phase commercial supply. A suitable installation could use two dedicated circuits with dynamic load management, allowing the chargers to share available capacity.
The business might schedule charging from midnight to 6am, or use a tariff-linked system that selects the lowest-cost periods. The owner can then compare charging records with the business electricity bill and adjust the schedule if the vans’ mileage changes.
The result is not a guaranteed saving figure. It is a controlled charging plan that reduces avoidable peak-period use while respecting the property’s electrical capacity.
Get advice on EV charging in Redhill and Surrey
ADS Electrical provides EV charging solutions for homes, landlords, workplaces and commercial premises across Redhill and surrounding Surrey areas. We are a NICEIC Approved Contractor and can assess your supply, recommend suitable equipment, install dedicated protection and configure scheduling, load management or solar charging where appropriate.
We offer free quotes within 24 hours and free lighting and charging consultations. Our team can manage the project from design through installation, coordinate with other trades and provide reliable communication throughout. We also provide 24-hour emergency call-outs for urgent electrical issues.
If you are planning a new installation or want to make better use of an existing tariff, contact ADS Electrical about a home charging point Surrey. For larger premises, fleet operators and landlords, you can also explore our EV charging solutions Redhill service.
The most effective off-peak setup is not simply the cheapest tariff or the fastest charger. It is the combination of a suitable tariff, correctly configured smart controls, a safe dedicated electrical supply and charging habits that match your daily driving needs.