Diesel vs Electric Lorries: A Realistic Comparison for Regional Haulage

Diesel vs Electric Lorries: A Realistic Comparison for Regional Haulage

Regional haulage is where electric lorries have the clearest chance—and the most stubborn limits. A 44-tonne artic pulling a fridge box across three counties is a different proposition from a 7.5-tonne rigid doing town-centre drops. The right answer depends on your duty cycle, your depot, and how much payload you can afford to lose. This comparison sticks to the practical questions: range, charging, payload, and total cost.

Start with the duty cycle, not the badge

Before you compare specifications, pull ninety days of telematics. Look at average daily miles, the longest single leg, the furthest point from base, the number of drops, dwell time at each drop, average payload, and whether the lorry returns to base every night. That data will tell you more than any brochure.

A regional fleet with fixed routes and a yard with three-phase power is a natural early adopter. A fleet that tramps, swaps trailers, covers emergency call-outs, or delivers to sites with no charging is a harder case. Neither is wrong. They are simply different jobs.

Take two examples. A builder's merchant running three 18-tonne rigids from one depot to fixed branches is almost a textbook electric case: predictable mileage, overnight charging, and loads that rarely max out the axle weights. A food distributor covering rural pubs and farms over a 200-mile loop is much harder, especially if drivers cannot guarantee a return before the evening peak or if the vehicle must divert to a breakdown. The first fleet can plan around energy. The second must plan around uncertainty.

The best electric lorry is the one that ends its shift where it started.

The return-to-base test

If every vehicle ends its day in your yard, electric is worth serious modelling. If vehicles are parked away from base, or if the route changes at short notice, diesel still offers flexibility that battery-electric lorries cannot match today. That may change as public charging improves, but plan for the infrastructure you have, not the one you hope for.

Range: what the dashboard doesn't tell you

Diesel range is predictable. A full tank will cover a long regional shift, and refuelling takes minutes. Electric range is a moving target. Cold weather, heater use, headwinds, hills, heavy loads, and higher speeds all take a bite out of the usable figure. A route that works comfortably in May may be tight in January.

Plan on usable range, not the number on the spec sheet. Keep a reserve for diversions, traffic, and charging queues. If you need public charging mid-route, add time and uncertainty to the schedule. For many regional operators, a return-to-base electric lorry charged overnight can cover a day's work. The question is whether your longest day fits, not your average day.

It helps to model three range figures: summer best case, winter worst case, and a realistic working range with a 15–20% reserve. If your longest regular route fits inside the worst-case figure with the reserve intact, electric becomes credible. If it only fits on the best day of the year, it is not a replacement; it is a fair-weather supplement.

Charging: the real infrastructure decision

Charging is not a plug; it is a project. You need to understand your site's electrical capacity, the cost of upgrading it, and how many lorries will charge at once. Overnight AC charging is slower but usually cheaper and kinder to batteries. DC fast charging is useful for opportunity top-ups, but it puts more strain on the battery and your electricity supply.

Questions to ask before you dig

• What is the maximum power your site can import, and is there spare capacity?
• How long do lorries dwell at base, and can charging be scheduled outside peak tariffs?
• Can you charge at customer sites, or do you need public charging en route?
• What happens if a charger fails? Do you have a backup plan or a diesel spare?
• Who owns the yard, and what does the lease say about electrical works?

Talk to your distribution network operator (DNO) and a reputable charge point installer early. A load management system can share power between chargers, but it will not create capacity that is not there. If you share a yard, start the conversation with the landlord now.

Also consider the practical layout. Chargers need safe access, cable management, and protection from yard traffic. If your overnight parking is tight or your vehicles are parked nose-to-tail, you may need to rethink the yard before you buy a single lorry. Infrastructure spend is often the part that surprises operators most.

Payload and specification

Battery packs are heavy. On a 44-tonne artic, the payload penalty can be enough to matter on dense loads such as aggregates, drinks, or building materials. On a 7.5-tonne rigid, it can be the difference between one full pallet and two. Electric lorries also add weight through cooling systems, inverters, and stronger chassis components, so the gross vehicle weight may look familiar while the net payload does not.

Check axle weights, not just total payload. A fridge box, tail lift, and heavy battery pack can push weight onto the wrong axle. That may force you to reduce the load, move it forward, or specify a different body. For some operations, a diesel lorry with a larger payload is not just cheaper; it is the only way to do the job legally.

What to check on the specification

• Payload after body, fridge, tail lift, and driver are accounted for.
• Axle weight limits front and rear, both empty and laden.
• Battery warranty, expected degradation, and replacement cost.
• Charge rate curve, not just peak kW.
• Whether the cab and body can be serviced by your existing workshops.

A smaller battery can improve payload but reduce range. That trade-off is the heart of electric lorry specification. There is no free lunch: every kilowatt-hour you carry is a kilogram you cannot deliver.

Total cost of ownership: the numbers that matter

The sticker price of an electric lorry is usually higher, even after grants. But purchase price is only one line. Electricity per mile is often cheaper than diesel, especially on an overnight tariff. Maintenance can be lower because there is no engine, exhaust, or gearbox, and regenerative braking reduces brake wear. Tyres may wear differently, and some components are still unproven in high-mileage regional work.

The uncertain costs are just as important. What will residual values be in five years? What happens if battery health drops faster than expected? Will your electricity tariff include a demand charge that spikes when several lorries charge at once? Can you get parts and trained technicians quickly? Diesel is a known quantity: noisy, polluting, and exposed to fuel price swings, but easy to refuel and easy to resell.

Build a whole-life model with your own numbers, not a salesman's. Include the charger, electrical upgrade, training, downtime, and the cost of a diesel backup if you need one. Then compare that with the diesel alternative over the same period. The answer may be closer than you think—or it may show that electric only works on the most predictable routes.

Where diesel still wins, and where electric already works

Diesel still wins on long, irregular routes, remote sites, high-payload work, and any operation where refuelling must take minutes. It also wins where public charging is unreliable or where a single vehicle must cover several roles. Electric already works for return-to-base fleets, fixed routes, urban and suburban deliveries, night-time depot charging, and operators who value quiet operation and lower local emissions.

The smart approach is rarely all-or-nothing. Many regional operators start with one electric lorry on the easiest route, keep diesel for the hardest, and learn what charging, payload, and maintenance really cost. That trial gives you real data for the next decision.

A simple decision framework

1. Pull ninety days of route and payload data for each vehicle.
2. Identify routes that return to base nightly and fit worst-case electric range with a reserve.
3. Check depot power, charger cost, and whether you can charge off-peak.
4. Compare payload after body and battery against your heaviest regular load.
5. Model total cost of ownership over five to seven years, including infrastructure and residual value.
6. Pilot one vehicle on the easiest duty cycle before committing the fleet.

Electric lorries are not a universal replacement for diesel, and diesel is not a permanent answer either. The operators who get this right will match the technology to the route, not the route to the technology. Start with the work, then choose the lorry.

Photo: Kindel Media / Pexels