By EV Charge Cost Editorial Team. Published September 28, 2026, updated October 26, 2026.
Why a trailer changes everything
A trailer adds weight, rolling resistance and, above all, frontal area. Because aerodynamic drag grows roughly with the square of speed, a tall, boxy trailer at highway speed can add a large amount on top of what the tow vehicle needs on its own. The effect depends on the trailer's weight, height and shape, your speed, wind and terrain, so nobody can give one universal figure.
What stays simple is the math. Towing cost = miles × (kWh per 100 miles while towing ÷ 100) × price per kWh. The hard part is knowing your towing consumption, which is why we show a range of illustrations below.
Illustration: what different towing penalties cost
Using the median electric pickup in our data, rated 48.7 kWh/100 mi, the table multiplies consumption by illustrative factors. These are not measurements for any trailer; they show how costs scale.
| Consumption while towing | kWh/100 mi | Home (18.16¢/kWh) | Public ($0.45/kWh) | 200-mile tow, public |
|---|---|---|---|---|
| No trailer | 48.7 | $8.85 | $21.93 | $43.86 |
| 1.5× EPA | 73.1 | $13.27 | $32.89 | $65.79 |
| 2.0× EPA | 97.5 | $17.70 | $43.86 | $87.72 |
| 2.5× EPA | 121.8 | $22.12 | $54.82 | $109.65 |
Range while towing, model by model
Range falls in proportion to the increase in consumption. If consumption doubles, range halves. The table applies the illustrative 2× factor to each pickup's representative EPA trim.
| Vehicle | EPA kWh/100 mi | EPA range (mi) | Towing range (mi) | Towing, per 100 mi at home |
|---|---|---|---|---|
| Tesla Cybertruck | 42.9 | 325 | 163 | $15.58 |
| Rivian R1T | 43.1 | 317 | 159 | $15.66 |
| Ford F-150 Lightning | 47.9 | 320 | 160 | $17.40 |
| Chevrolet Silverado EV | 49.6 | 286 | 143 | $18.00 |
| GMC Sierra EV | 52.4 | 390 | 195 | $19.02 |
| GMC Hummer EV | 70.3 | 289 | 145 | $25.52 |
In practice you would not drain the battery to zero, so the usable distance between charges is shorter still. Plan legs with a buffer.
Where you charge matters more when towing
Short tows near home can be charged at your home rate. Long tows usually mean public fast charging, and the price gap between the two gets multiplied by the towing penalty. In the illustration above, 200 miles at 2× consumption costs $35.40 at the U.S. average home price and $87.72 at $0.45 per kWh.
Charging logistics matter too. Some charging sites are laid out as pull-in bays where a trailer blocks other stalls or does not fit, which may mean unhitching. Check site layouts before a long tow.
Estimating your own towing consumption
The only reliable towing number is one you measure. On your first tow, reset a trip meter, note the battery percentage at the start and end, and multiply the percentage used by your usable battery capacity to get kWh. Divide by miles and multiply by 100 for kWh per 100 miles. Because this is battery energy rather than wall energy, add a margin for charging losses when you convert it to cost. Repeat on a few trips: speed, hills and wind will make the figure vary, and the spread tells you how much buffer to plan.
How to tow more cheaply
- Slow down. With drag growing with the square of speed, a lower cruising speed saves a disproportionate amount of energy when a trailer is attached.
- Choose a low, narrow trailer if you have the option; frontal area is one of the biggest levers.
- Start full and charge at home first, so the most expensive public kWh are the ones you need least.
- Measure your own number. Note kWh used and miles on a tow, then divide to get your kWh per 100 miles for that trailer.
For the non-towing baseline, see the cost to charge an electric truck. To plan the route and stops, see road trip charging costs.