KB Electrical Solar, batteries and EV chargers
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Run your home on the cheapest hours of the day

Solar panels, home batteries and EV chargers, planned and fitted by your local electrician across Coventry and Warwickshire. See what you could save in about a minute.

  • Cheap night rate, about 7p a unit
  • Standard, about 26p
  • Peak, 30p or more
A battery fills up in the cheap hours and runs your home through the expensive ones. Solar adds free power in daylight, and an EV charger lets your car fill up overnight at the lowest rate.

Why use KB Electrical

    What we fit

    Everything is designed, fitted, tested and certified by our own electricians. Have one on its own, or combine them: they work best together.

    Solar panels

    For: homes with a roof that gets good daylight, especially south, east or west facing.

    • Most homes suit 8 to 14 panels, about 3 to 6 kW.
    • Free electricity in daylight. Anything you don't use can be sold to your supplier through the Smart Export Guarantee.
    • Output is far lower in winter than summer, and we show you both in your quote.
    • Most roof panels in England don't need planning permission. Listed buildings and some conservation areas do, and we check this for you.
    • 0% VAT until 31 March 2027.

    Home batteries

    For: anyone on, or willing to switch to, a cheap overnight tariff. Solar panels are not needed.

    • We fit Sigenergy SigenStor, a modular battery you can add to later, usually 5 to 13.5 kWh to start, sized to how much electricity you use.
    • Its built-in AI decides when to charge and when to run your home from the battery, so you don't have to set timers.
    • Charges in the cheap night hours, or from solar, and runs your home through the expensive part of the day.
    • Can keep chosen circuits running in a power cut with the right backup equipment, which we quote as an option.
    • Sited safely to the latest Wiring Regulations: an outside wall or garage is best, never a loft, bedroom or escape route.
    • 0% VAT until 31 March 2027.

    EV chargers

    For: anyone with, or getting, an electric or plug-in hybrid car and somewhere to park off the road.

    • A 7 kW smart charger fills most cars overnight.
    • Set to charge in the cheapest hours automatically, using an EV tariff.
    • We check your supply, earthing and consumer unit first, and fit load protection so the house never overloads.
    • Most installs take about half a day.

    Combined systems

    For: getting the biggest saving from one visit.

    • Solar and a battery: store the daytime power you would otherwise sell cheaply.
    • Battery and EV charger: run the whole house on the same cheap overnight rate as your car.
    • All three: one electrician, one survey, one written price and one point of contact for everything.
    • Already have solar or an EV? We can add a battery to what you have.

    A battery that plans ahead

    Sigenergy's AI mode, run from the mySigen app, works out the best time to charge and discharge every day. You don't have to set timers or watch prices.

    It's forecasting and scheduling, not a chatbot. It takes a few weeks to learn your routine, and most of the saving still comes from being on the right tariff, so we set that up with you.

    • Learns your routineWhen you cook, run the washing or charge the car, so the battery is full before you need it.
    • Reads the weatherForecasts tomorrow's solar, so it doesn't fill up from the grid overnight when a sunny day will do it for free.
    • Follows your tariffCharges when electricity is cheapest and runs your home when it's dearest, including half-hourly tariffs such as Octopus Agile.
    • Keeps a power-cut reserveWith the backup gateway, you choose how much charge to hold back in case the power goes off.
    • Shows you everythingSee your solar, battery, grid use and the day's plan in the app, and change settings whenever you like.

    How it works

    No pressure and no surprises. You get a fixed written price before anything is booked.

    1. Free online estimateAnswer a few questions above and see a likely yearly saving in about a minute.
    2. We call youWe ring at the time you choose to talk it through and book a survey that suits you.
    3. Home surveyWe check your roof, consumer unit, earthing and the best place for each part, and look at your bills.
    4. Fixed written quoteEverything itemised, with summer and winter savings figures and the tariff we'd recommend.
    5. InstallationUsually one or two days. We handle the network operator notification and building regulations paperwork.
    6. HandoverWe set up the app with you, help you switch tariff and give you all certificates and warranties.

    Common questions

    How much does it cost?

    Every home is different, so we give you a fixed written price after the survey. As a guide, home batteries in the UK typically cost about £3,000 to £7,000 fitted depending on size, and solar and EV charger prices depend on your roof and supply. Your quote lists every item, so there are no extras later.

    Is there VAT to pay?

    Solar panels and home batteries fitted to homes have 0% VAT until 31 March 2027, then 5%. The rate depends on when you pay, not when you sign, so allow time for the survey and installation if you want the 0% rate. EV chargers have standard VAT.

    Do I need solar panels to have a battery?

    No. A battery on its own charges from the grid at a cheap overnight rate and powers your home in the day. You do need a time-of-use tariff for it to save money, and we'll help you choose one.

    Will it keep my power on in a power cut?

    Not automatically. Most systems switch off in a power cut for safety. With extra backup equipment a battery can keep chosen circuits, such as lights, fridge and broadband, running. We'll quote this as an option.

    Does solar work in winter?

    Yes, but it produces much less than in summer. That's why our quotes show summer and winter separately, and why a battery charged on a cheap night rate still helps in the darker months.

    Which energy tariff should I be on?

    Most of the saving comes from the tariff, so we recommend one as part of your quote. We're not tied to any energy supplier, so we'll suggest whichever suits your home and car.

    What does the "AI" actually do?

    It predicts how much electricity your home will use and how much your solar will make, using your past usage and the weather forecast, then plans when to charge and discharge around your tariff's prices. It runs on its own once set up, and you can always see and change the plan in the mySigen app. It doesn't replace choosing the right tariff, which we help with.

    Where can the battery go?

    The latest Wiring Regulations prefer an outside wall, and a garage or utility room can work. Batteries must not go in lofts, bedrooms or escape routes. We'll find the safest spot on the survey.

    Are you MCS certified?

    What guarantees do I get?

    You get the manufacturer's warranty, typically 10 years or more on batteries and inverters, plus our written workmanship guarantee. We fit Sigenergy batteries, a major manufacturer with UK support, and we'll explain exactly what's covered in your quote.

    See what you could save

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