SOLAR + BATTERY + EV
Got an EV? Make your solar work harder.
Generate electricity on your roof, store it when it makes sense and use smart charging to put more of that energy into your home and electric car.
Switched On London designs solar PV, battery storage and EV charging together - so the systems work as one home-energy strategy rather than three separate installations.
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SUNSOLARHOMEBATTERYEV CHARGEREV
Your roof can help fuel your car.
An electric vehicle can substantially increase household electricity consumption. Solar panels can generate part of that energy at home, while smart charging and battery storage can help decide when that electricity is used.
The goal is not simply to install more equipment. It is to coordinate generation, storage and charging around how the household actually lives.
How solar charging actually works
Solar generation
Panels generate electricity during daylight hours. The home uses available generation first according to the system architecture.
Surplus solar
When generation exceeds household demand, surplus can potentially be directed to a compatible EV charger, battery or exported to the grid.
Smart EV charging
A solar-aware charger can vary charging according to available surplus, subject to charger capability and minimum charging requirements.
Battery storage
A home battery can store surplus solar for household use later, but it should be configured deliberately around EV charging and tariff windows.
Technical accuracy
Do not say an EV will be '100% charged by solar' or imply all chargers can follow solar surplus. Results depend on array size, weather, household demand, vehicle availability, charger settings and battery/system architecture.
Three customer scenarios
I have an EV and want solar
Design the solar array around existing household demand plus the additional annual electricity required by the vehicle. Consider when the car is normally at home and available to charge.
I have solar and I'm buying an EV
Assess the existing solar/inverter arrangement and specify a compatible smart charger. Add battery storage where it improves the wider energy strategy.
I'm planning solar + battery + EV together
The strongest opportunity: design the array, inverter, battery, charger, tariff strategy and electrical infrastructure as one coordinated project.
No - but it can make the whole home more flexible.
A home battery is not required for solar-aware EV charging. A compatible charger can respond to surplus solar directly.
Battery storage becomes valuable when the objective is broader: store daytime solar for evening household use, shift grid consumption into lower-cost periods, provide compatible backup functionality or prepare the home for additional electrical demand.
Estimate your EV electricity demand
Use this simple educational estimator to understand approximately how much electricity your EV may require each year.
How much solar do I need for an EV?
Do not answer this with a generic number. The correct design depends on annual vehicle mileage, vehicle efficiency, household electricity consumption, usable roof area, orientation and how often the vehicle is at home during daylight.
The online journey should ask for annual mileage or approximate weekly mileage as part of a Solar + EV enquiry, then the formal design can model the additional annual EV demand.
One home. One energy strategy.
Solar PV
Generate electricity from the available roof areas.
Battery storage
Store solar or suitable off-peak electricity for later household use.
Smart EV charger
Schedule charging and, with compatible equipment, respond to available surplus solar.
Energy management
Use monitoring and smart controls to understand where electricity is being generated, stored and consumed.
Sigenergy
For customers interested in a tightly integrated ecosystem, include a premium card linking to the Sigenergy Installer London page and its EV integration options. Verify current UK charger/V2X compatibility before publishing specific claims.
Why design it together?
Correctly assess the additional electrical demand created by the EV.
Plan consumer-unit and protective-device requirements once.
Coordinate cable routes before finished surfaces are disturbed repeatedly.
Size solar and battery around future consumption rather than historic consumption alone.
Coordinate tariff, battery and EV charging settings.
Consider future heat-pump or other electrification loads at the same time.
Customer journey
01
Tell us about the home & car
Postcode, electricity use, EV model, mileage, parking, existing solar/battery and future plans.
02
Roof & electrical survey
Assess usable solar area, shading, consumer unit, supply capacity, cable routes and charger position.
03
Home-energy design
Propose solar array, battery if appropriate, charger and operating strategy.
04
DNO / electrical requirements
Manage applicable solar grid-connection requirements and EV electrical design.
05
Installation
Coordinate solar, battery and EV works as one project where required.
06
Smart commissioning
Configure monitoring, battery and charging settings and explain how the system works.
Frequently Asked Questions
Yes. Solar generation can contribute to EV charging. With a compatible solar-aware charger, charging can be adjusted around available surplus generation.
our customers
What our customers say.
Generate it. Store it. Drive with it.
Design solar, battery storage and EV charging around the way your home actually uses electricity.
