Convert the fleet now, or wait: a staged decision for a medium-duty road-freight operator.
The crossover has conditionally arrived. Electrify urban and regional last-mile now, hold diesel in long-haul until vehicle cost and charging infrastructure mature, and treat hydrogen as a post-2030 option that needs no near-term capital.
A staged, segment-differentiated conversion is the board-defensible call. It is not the highest-value path in the most optimistic future, but it is the most defensible across every future tested: it converts the most exposed, high-mileage urban assets first and defers the most uncertain long-haul commitment.
The question is not "electrify or not," but which trucks, and when. Three segments were assessed against a five-year total cost of ownership:
The gating item before any capital is a depot grid-capacity and electricity-tariff study. The economics turn on the local rate, and the study is the item every subsequent decision depends on.
On a 25-truck medium-duty fleet over five years, the base case is a net electric advantage of roughly $390K–$575K, with break-even in Year 3–4, at $0.14/kWh with incentive access.
| Cost category (5-year, 25 trucks) | Diesel | Electric | Advantage |
|---|---|---|---|
| Vehicle acquisition | ~$2.1M–$2.4M | ~$3.75M–$5.0M | Diesel ~$1.65M–$2.6M |
| Charging infrastructure | — | $500K–$1.5M | Diesel |
| Fuel / energy | ~$2.6M–$3.2M | ~$1.6M–$2.0M | Electric ~$1.35M |
| Maintenance | ~$1.0M–$1.75M | ~$500K–$875K | Electric ~$625K |
| Net electric advantage, base case | ~$390K–$575K |
The crossover is close, and operator-specific conditions decide which side of zero a fleet lands on. At median assumptions the sensitivity model returns a five-year net TCO per vehicle of −$5,074: the electric truck does not quite pay back its premium on a per-vehicle basis. The fleet-level advantage above assumes incentive access and high utilisation. Both readings are internally consistent, and together they make the point: this is a genuinely close call decided by electricity tariff and incentive access, not a foregone conclusion.
A tornado analysis ranks the six variables by their absolute swing on the five-year net TCO per vehicle. Two dominate.
The two dominant levers point in opposite directions: rising diesel prices (carbon taxes, the EU's ETS2 from 2027) push the case toward electric, while a high depot electricity tariff can erase the advantage entirely. Utilisation is the third lever, so low-mileage assets should wait while high-mileage ones convert first.
Each strategy was scored across three scenarios to 2035.
| Scenario (2026–2035) | Probability | Fleet electric by 2028 | Break-even |
|---|---|---|---|
| Managed transition — urban converts, heavy-duty waits | 42% | 25–35% | Year 3–4 |
| Crossover arrives — fast-track electrification | 40% | 40–50% | Year 1–2 |
| Stalled — electricity up, incentives erode | 18% | 5–10% | Never within cycle |
The two most likely futures (82% combined) both support converting urban medium-duty now. Only the stalled scenario, driven mainly by a high depot electricity tariff and eroded incentives, reverses the case, which is precisely why the tariff study is the gating item.
Three strategies were tested: convert the whole fleet now, wait until 2028–2030, or a staged rollout. The staged rollout wins on both robustness tests.
It minimises maximum regret across all three scenarios, and it dominates on the Wald worst-case test. It converts the most exposed, high-mileage urban assets first, limiting both regulatory and stranded-asset risk, while deferring the most uncertain long-haul commitment until pricing and infrastructure mature.
It is not the highest-value path in the best-case future, where converting everything now would have captured more fuel savings. It also carries two-tier fleet complexity: running electric and diesel side by side adds dispatch and maintenance overhead until the transition completes.
Confidence: high (directional), moderate (thresholds) The direction — convert urban now, defer long-haul, reject hydrogen — is well supported. The specific financial thresholds are sensitive to local electricity tariff and incentive conditions that vary by operator and geography.
What would accelerate full conversion: electricity below $0.10/kWh, Class 8 electric below $250K, low-emission zones moving to zero-emission-only before 2028, or a sustained diesel price above $5.00/gallon. What would slow or reverse it: a depot electricity tariff above $0.20/kWh without time-of-use mitigation, or a grid upgrade above $2M.
This is a real analysis anonde produced, shown as an illustrative sample. It models a generic 25-truck medium-duty fleet, not a specific client, and draws on public sources and the analytical methods named above; figures are as of August 2026. It is for demonstration only and is not investment, tax, or professional advice. In the live product, each figure links to the method or source it came from.