Methodology Example — eMobility Transition

How TCO-Lens models a 75-truck California fleet's Class 6-8 BEV transition for a 18% projected TCO reduction

Applied to a Southern California mixed-fleet operational profile evaluating electrification under the post-CARB economic decision. The methodology produces a phased transition plan that captures incentive windows before they close.

75
Trucks in fleet
32
Vehicles flagged for transition
18%
Projected TCO reduction
$1.4M
Incentives identified

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About this methodology example

This page presents a worked example of MarginHaul’s TCO-Lens methodology applied to a representative regional fleet’s operational profile. Identifying details are anonymized — we never share fleet information without explicit approval. Numbers reflect modeled outcomes from the methodology. Your results will differ based on your network, equipment, and operating conditions.

The operational profile

The profile applied is a family-owned fleet running 75 trucks out of the Inland Empire — a mix of Class 6 box trucks for regional distribution and Class 8 day cabs for short-haul drayage between the Ports of Long Beach/LA and inland warehouses. Annual revenue of approximately $62M. The federal 30C charging credit deadline (June 30, 2026) and the depleting CA HVIP small-fleet voucher pool together drive the economic decision window for this kind of operator.

Most fleets at this scale lack internal expertise on EV economics, charging infrastructure, or the timing of incentive windows. OEM and charging-provider quotes arrive without an independent way to evaluate them or sequence vehicle transitions. The decision pivots on capturing 30C credits before deadline and locking HVIP applications before the small-fleet voucher pool depletes: buy too late and miss the incentive window; sequence wrong and overspend on infrastructure.

Key insight

Most fleets approach EV transition as a vehicle replacement problem. It's actually a route-design and infrastructure-sequencing problem. Which vehicles to electrify first depends entirely on which routes can support the range, which facilities can support the charging load, and which incentive windows are still open.

What the methodology surfaces

TCO-Lens overlays 12 months of telematics, fuel records, and maintenance logs across all 75 vehicles. Route profiles are tested against current BEV range capability, facility electrical capacity is mapped, and the federal/state incentive timing is modeled against the fleet’s procurement cadence and the broader regulatory landscape.

Finding Detail Impact
32 vehicles on routes under 120 mi/day Well within BEV range — immediate candidates Phase 1 transition
18 vehicles on routes of 120–200 mi/day Feasible with midday opportunity charging Phase 2 transition
25 vehicles on routes over 200 mi/day Not viable for BEV today — hold as ICE or evaluate FCEV Phase 3 (2028+)
Main yard electrical capacity at 38% of requirement Panel upgrade + transformer needed before fleet charging $280K infrastructure investment
$1.4M in available incentives expiring within 18 months HVIP vouchers, MSRC funds, IRA commercial EV credit Offsets 41% of Phase 1 vehicle cost

What the methodology recommends

The methodology produces a three-phase transition plan spanning 36 months, sequenced to maximize incentive capture, minimize infrastructure risk, and stay aligned with the regulatory landscape at every milestone.

1. Start with the 19 Class 6 box trucks on sub-100-mile routes. These show the clearest BEV business case — daily mileage well within range, return-to-base every night, and eligible for HVIP vouchers worth up to $85K per vehicle. Overnight depot charging at the main yard needs only a Level 2 infrastructure buildout, not DC fast charging.

2. Upgrade electrical infrastructure in two stages, not all at once. A common initial instinct is to build out charging for the entire fleet upfront — a $1.2M project. The methodology recommends a staged approach: Phase 1 needs only a panel upgrade and 20 Level 2 chargers ($280K). Phase 2 adds DC fast chargers and a transformer upgrade only when the mid-range vehicles transition, spreading the capital over 18 months.

3. Lock in incentive applications immediately. HVIP voucher funding, MSRC grants, and the federal 30C charging credit have overlapping windows; 30C expires June 30, 2026 and the CA HVIP small-fleet voucher pool is depleting. The plan includes a ready-to-submit application package for all 19 Phase 1 vehicles, structured to capture $1.4M in combined incentives before the funding pools close.

4. Restructure routes to consolidate short-haul loads onto EV-eligible vehicles. The methodology reassigns seven routes that mix short and long legs so that the shortest legs concentrate onto the vehicles slated for BEV transition. This increases Phase 1 candidate vehicles from 19 to 32 without changing total freight volume.

5. Hold long-haul drayage on ICE through 2028. The 25 Class 8 day cabs running 200+ mile routes don’t have a viable BEV option today at the required duty cycle. The methodology models the useful-life timeline and shows these vehicles can remain in the fleet through 2028–2030 within the modeled regulatory landscape. By then, next-generation BEV tractors and hydrogen fuel cell options will be commercially available at scale.

TCO comparison

All-ICE fleet (status quo)
Fuel cost (annual)$2.4M
Maintenance (annual)$890K
Compliance + incentive timing exposure (est.)$1.8M+
5-year projected TCO$19.2M
Regulatory + incentive postureAt risk
Phased EV transition (our plan)
Energy cost (annual, blended)$1.6M
Maintenance (annual, blended)$620K
Compliance + incentive timing exposure$0
5-year projected TCO$15.7M
Regulatory + incentive postureAligned
The math

The phased plan saves $3.5M over five years compared to maintaining the all-ICE fleet — an 18% modeled TCO reduction. Even setting compliance + incentive-timing exposure aside, the transition is NPV-positive by Year 3 due to lower energy and maintenance costs on the electrified portion of the fleet.

The methodology timeline

Days 1–3
Data intake
Twelve months of telematics data, fuel card records, maintenance logs, vehicle age and mileage records, utility bills for all facilities, and existing OEM and charger quotes are intaken into the methodology.
Days 4–10
Route and vehicle profiling
Each vehicle is classified by daily mileage distribution, return-to-base pattern, dwell time at facilities, and weight profile. The methodology maps each vehicle’s useful-life expiration against the fleet’s procurement cadence.
Days 11–22
TCO modeling and infrastructure design
Vehicle-level TCO models are built comparing ICE replacement vs. BEV transition for each of the 75 units. A two-stage charging infrastructure plan is designed and contractor bids are sourced. Available incentives are identified and quantified, with 30C deadline timing and HVIP capture sequencing called out.
Days 23–30
Transition plan delivery
The three-phase plan is presented to ownership and operations leadership. The methodology produces a regulatory + incentive timing calendar, vehicle procurement schedule, infrastructure timeline, and incentive application package ready for submission.

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