Vehicles are arriving before the depot power upgrade: what can proceed?

When vehicle delivery outruns available power

An operator planning depot electrification asked Reddit whether planning begins with vehicle orders or years before them. The scenario calls for a specific plan when vehicles have a delivery date, but utility design or construction remains unresolved. Buying more chargers does not close that gap. Divide the project into an approved initial operating phase, a utility-dependent expansion, and a contingency plan for the period between them.

Source: How do businesses decide when a fleet depot is ready for EV charging?

Identify the supply the first phase can use

The first phase must be based on the supply actually available and an approved installation, not the capacity printed on future switchgear. DOE fleet guidance recognizes public charging as a possible interim arrangement, while PG&E publishes customer-process maps and advises customers to make contact early. A charger mounted on a finished pedestal may still be unusable. Likewise, an application number is evidence that a process exists, not confirmation of power or a construction date.

Source: Alternative Fuels Data Center: Electric Vehicles for Fleets · Building & Renovation | PG&E

Ask whether PG&E Flex Connect fits the depot

PG&E's Flex Connect pilot is a possible path for eligible sites in PG&E's service area with controllable demand while capacity upgrades remain pending. Its 2026 overview requires site-specific eligibility review, a compatible energy management system, and the ability to change consumption. PG&E communicates power limits to the local system, including an hourly forecast sent a day ahead. Participation is not a promise of constant nameplate power or automatic early energization. Listed site criteria also include an upgrade need or existing limit affecting operation and a PG&E-indicated capacity upgrade timeline longer than 12 months.

Ask PG&E for the site's eligible capacity profile and required controls. Run the restricted hours against the fleet's least flexible departures, including a late return. Obtain written behavior for lost communications and changing limits. If the reduced window cannot supply a route, retain the alternate vehicle or charging arrangement. A useful pilot can accelerate part of the operation without supporting every vehicle from day one.

Source: PG&E Flex Connect Pilot: eligibility and operating limits

Illustrative scenario: four vans before the expansion

Illustrative scenario: four electric vans arrive in November, while a planned expansion would eventually serve sixteen. The existing approved charging allocation can replenish two vans on long routes or four on shorter routes. The project team should first determine whether routes can be reassigned for the interim period. If public charging is proposed for the remaining energy, include driver time, station availability, connector compatibility, parking access, and an alternative when that station is unavailable. Calling nearby public charging a backup without testing it is only an assumption.

Track the dependency that controls energization

Use a milestone table that distinguishes design acceptance, equipment order, customer construction, inspection release, utility work, and charger commissioning. Assign an owner and completion evidence to each milestone. Ask the utility which dependencies currently control the schedule and which can proceed in parallel. Do not pressure a contractor to substitute a larger main breaker or energize unapproved work to meet a vehicle date. The safe operating phase has to stand on its own electrical design.

State what future infrastructure actually enables

Infrastructure can still be planned for later expansion, but the contract should identify what is installed now and what is reserved only as space or pathway. Oversized enclosures, spare conduit, and future transformer pads can reduce later disruption when they match a coordinated design. They do not reserve utility capacity. Avoid purchasing equipment before its input requirements, location, and utility acceptance are resolved, especially where changes could affect long-lead switchgear or civil work.

Make the interim plan capable of surviving a further delay

An interim charging plan should state how long it can operate, how many vehicles it supports, and what event would make it unworkable. For example, a temporary public-charging arrangement may be adequate for two weekday routes but fail when weekend work is added. Check the real access hours, vehicle parking restrictions, payment administration, and employee time involved. Obtain evidence from representative charging visits. A map pin and an advertised station rating do not establish that the arrangement can support the fleet's actual vehicles and departure times.

Separate decisions that can be reversed cheaply from commitments that depend on unconfirmed power. Driver training, route monitoring, and a coordinated site plan can provide value while utility work remains pending. Ordering site-specific equipment before its supply requirements and location are accepted can create avoidable redesign exposure. Ask each party to identify its next irreversible commitment and the evidence needed before making it. The answer may be different for switchgear, trenching, charger hardware, and vehicle delivery; one project-wide percentage-complete figure hides those differences.

Use a short transition checklist when permanent power becomes available. Confirm inspection and energization status, authorized charging settings, account and tariff setup, completed commissioning, and the responsible operator's training. Run the dispatch scenario again with the intended number of vehicles. Only then retire the interim arrangement according to its notice terms. Keeping a contingency for a defined overlap period may be a reasonable business choice, but it should be priced and scheduled deliberately. The milestone that matters to fleet operations is demonstrated route readiness, which can occur later than equipment delivery or completion of civil work.

Set a decision date before vehicles arrive

Set a decision date before vehicle delivery. At that date, compare confirmed power availability with the minimum required route coverage and choose a documented contingency: altered deliveries, a smaller electric tranche, an interim charging contract, or different route assignments. Record the cost of each option so the business decision is explicit. Once the permanent service is ready, recommission the charging limits and repeat dispatch testing. Removing an interim restriction should be a controlled handoff, not an informal app adjustment.

Put it into practice

A decision table to keep handy