ElementrailerDemo

Impact calculator

Performance & ROI simulator

1

Your setup

Configure your truck, trailer battery, and nightly charging window.

Configuration parameters
$5.00/ gal
4,000 / 6,000 max
+ 4,000 lbs dry (60 kWh)Total 8,000 / 10,000 GVWR
CDL combined weight
14,800/ 26,000 lb

truck 6,800 + trailer 4,000 (60 kWh) + payload 4,000

11,200 lb under the CDL limit

Charging strategy

Residential EV plan with super-off-peak overnight rates.

4p6p8p10p12a2a4a6a
off-peak shoulder peak
$19.03/ night
saves
$18.05 vs peak

Full 60 kWh delivered at 0.317 $/kWh effective.

Motor assist

The trailer's e-axle carries its own drag, so the truck doesn't. Energy is sourced from the trailer's overnight-charged pack — cheaper, not free.

Truck solo
mi/kWh · editable
Towing
mi/kWh · editable
+ Assist
1.47
mi/kWh · +11%

Truck mi/kWh prefilled from Ford F-150 Lightning + payload; click a value to override.

MPG improvement, towing
1.3 MPGe base→+11%
Trailer spends 0.084 kWh/mi (~$0.027/mi at your overnight rate); regen recaptures 0.004 kWh/mi.Gas truck: assist improves MPG by the same +11%; the trailer pack remains electric.
ModeTruck mi/kWhImproveTrailer kWh/mi
eco1.43+9%0.067
balanced1.47+11%0.084
max1.61+22%0.152
Regen recapture
5%

Conservative placeholder — measured regen recapture varies with terrain and driving (~3–10%); pending validation against prototype telemetry.

2

A day in the life

Model a typical crew day — stops, tools, and miles.

One route applied to all weekdays (Mon–Fri). Turn this on to give each day its own stops.

Daily energy
29.7kWh
Total miles
53.2mi
On-site
2h 55m
Send to Planner
3

Across the week

See how energy and charge stack up Monday through Friday.

Across the week

How much each crew uses, Monday through Friday.

From crew day
Trailer energy
30kWh/day

Trailer charge

State of charge through the week — each weekday shows the end-of-work low point before the overnight charge.

0%25%50%75%100%SunMonTueWedThuFriSat
End-of-work charge
Sun
100%
Mon
50%
Tue
50%
Wed
50%
Thu
50%
Fri
50%
Sat
100%
Weekly use
150kWh
Weekly cost
$47.58
Fri end-of-work
50%
Saved vs peak
+$90.24
4

The payoff

Fleet ROI, payback period, and 5-year savings vs. gas.

Trailers in fleet
Scales the savings totals below.
1
Recurring / yr
+$6,225
Year 1
+$8,725
Payback
3.3 yr
5-yr ROI
1.5×

Payback runs on the $23,000 premium over a $7,000 conventional trailer ($2,500 Y1 CapEx avoided).

Where it comes from (per month)
WithoutWith ETDelta
Towing fuel offset$792$554+$238
Trailer electricity cost$0$355−$355
On-site generator gas offset$208$0+$208
Brake maintenance saved$100$0+$100
Avoided downtime (crew time)$306$0+$306
Spare batteries (amortized)$22$0+$22
5

Peace of mind

Confirm the whole fleet charges overnight on your existing service — no generator, no panel upgrade.

Overnight site power

Can your whole fleet charge overnight on the branch's existing service — no generator, no panel upgrade? Trailer count follows your fleet size from the payoff above.

9.6/ 38.4 kW usable

1 × 9.6 kW charger vs 200 A service (NEC 80% overnight derate)

Your 1 trailer fit with 28.8 kW to spare

This service fits up to 4 L2 trailers charging at once.

Show the math

Generate a printable proof of every calculation behind the numbers above — each formula with your current configuration substituted in. Save it as a PDF from the print dialog.