Home Off-Peak EV Charging vs Public Networks — What Lincolnshire Drivers Actually Pay
If you've recently switched to an electric car — or you're thinking about it — one of the first questions you'll ask is: where should I actually charge? Plug in at home overnight on a cheap off-peak rate, or top up on the public network when you're out and about?
For most drivers in Spalding, Boston, Peterborough and across Lincolnshire, the answer is straightforward. Home charging wins on cost almost every time. But public charging still has its place — and understanding the difference can save you hundreds of pounds a year.
How home EV charging works
A dedicated home charger (typically 7 kW) plugs into your off-street parking — driveway, garage, or car port. You connect when you get home, and the car charges while you sleep.
Unlike a standard three-pin socket, a proper charge point is:
- Faster — a full overnight top-up instead of an all-day trickle charge
- Safer — designed for sustained high-current use with the right circuit protection
- Smarter — many units schedule charging automatically around your tariff
As NAPIT Part P registered electricians, we install home chargers across Lincolnshire that are fully certified and compliant with current wiring regulations.
Off-peak tariffs: where the real savings are
The biggest cost advantage of home charging isn't just charging at home — it's charging at the right time.
Most energy suppliers now offer EV-specific tariffs with a cheap overnight window, typically between midnight and 5am or 7am. During that off-peak period, rates often drop to around 7–10p per kWh — sometimes even less on intelligent tariffs that shift charging to the cheapest half-hour slots.
Compare that to a standard domestic rate of 24–28p per kWh, and the maths is clear. Charging a 60 kWh battery from empty:
- Off-peak at ~8p/kWh → roughly £4.80
- Standard rate at ~26p/kWh → roughly £15.60
- Public rapid charger at ~55–75p/kWh → roughly £33–£45
That's a significant difference over a year. If you're doing 10,000 miles annually in a typical EV using around 3,000 kWh, off-peak home charging could cost you £240–£300 versus £1,000+ on public rapid chargers.
Smart chargers make this effortless — you set your ready-by time in the app, and the unit handles the rest.
What public charging actually costs
Public charging in the UK falls into two broad categories:
Destination chargers (7–22 kW)
Found at supermarkets, car parks, hotels, and some workplaces. These are slower but convenient for topping up while you shop or work. Typical rates in 2026 sit around 35–55p per kWh, though some locations still offer free or discounted charging for customers.
Rapid and ultra-rapid chargers (50 kW+)
These are the motorway services, fuel station forecourts, and dedicated charging hubs — the ones you use on longer journeys. Speed comes at a price. Rates commonly range from 50–85p per kWh depending on the network, location, and whether you're a subscriber.
For a Lincolnshire driver, that means a rapid charge at Peterborough services or along the A1 could cost three to six times more than charging the same amount at home off-peak.
Home off-peak vs public: a quick comparison
| | Home (off-peak) | Home (standard rate) | Public (destination) | Public (rapid) | |---|---|---|---|---| | Typical cost | 7–10p/kWh | 24–28p/kWh | 35–55p/kWh | 50–85p/kWh | | Convenience | Plug in at home, ready by morning | Same | Top up while out | Fast on long trips | | Best for | Daily charging | If no EV tariff | Shopping, work, town centres | Motorway journeys | | Installation needed | Yes — dedicated charger | Yes | No | No |
The pattern for most drivers: charge at home off-peak for 90% of your miles, and use public chargers only when you genuinely need them — long trips, emergencies, or the occasional top-up away from home.
When public charging makes sense
Public networks aren't the enemy — they're essential infrastructure. You'll want them when:
- Driving long distances — Lincolnshire to London, the Midlands, or further afield
- No off-street parking — flats and terraced streets without a driveway
- Topping up on the go — a quick boost at a supermarket while you do the weekly shop
- Workplace charging — if your employer provides it free or subsidised
But relying on public rapid chargers as your main source of power is the most expensive way to run an EV. It's like filling up with premium fuel every single time when you could be filling up at home for a fraction of the price.
Pairing home charging with solar
If you already have — or you're planning — solar panels, the economics get even better. A smart EV charger can divert surplus daytime generation straight into your car battery, effectively charging for free from your own roof.
We install chargers that integrate with solar PV systems across Spalding, Holbeach, Stamford, Grantham, and the wider Lincolnshire area. Find out more about our EV charger installations.
What about the upfront cost of a home charger?
A typical home EV charger installation in Lincolnshire costs between £800 and £1,200 depending on cable run length, consumer unit upgrades, and charger model. Some installations still qualify for OZEV grant support, which can reduce the cost further.
Even without a grant, the payback is quick. If you're saving £500–£800 a year compared to public charging, a home charger pays for itself within the first year or two — and then it's pure savings for the life of the vehicle.
Bottom line
For the vast majority of Lincolnshire EV drivers with off-street parking, the smartest setup is:
- Install a dedicated home charger — safe, fast, and smart
- Switch to an EV off-peak tariff — charge overnight at the cheapest rate
- Use public chargers sparingly — for journeys, not daily life
- Add solar if you can — free miles from your own roof
Home off-peak charging isn't just cheaper — it's more convenient. You wake up to a full battery every morning without queueing at a charge point or watching the pence tick up on a motorway rapid charger.
Get a home charger installed
PPM Electrical installs EV chargers across Lincolnshire from our base in Spalding. We'll assess your property, recommend the right charger, and handle the full installation including certification.
Call 07714 736921, email phill@ppmelectricalltd.co.uk, or request a free quote online.
Charging costs vary by supplier, tariff, and network. Figures above are typical 2026 UK ranges for guidance — check your own tariff and charger rates for exact costs.