Why Fleet Depot Charging Takes Longer Than Buying the Trucks

September 16, 2026•8 min read

The vehicles are the easy part. Power delivery is the constraint that decides when, and where, fleet electrification actually happens.

By Keith Reynolds | Publisher & Editor, ChargedUp!

Home | All Stories

Amazon now runs more than 40,000 electric delivery vans and has installed over 50,000 chargers at more than 250 US delivery stations, making it one of the largest private charging operators in the world. That scale masks the real constraint every fleet and every host property hits: getting enough power to the site. A depot service upgrade routinely takes 6 to 18 months from the utility application, and the transformers those upgrades depend on now carry lead times measured in years. For owners of warehouses, logistics parks, truck stops, and fleet-adjacent property, electrical capacity has become a leasing and site-selection variable as important as location, and the same grid-equipment shortage driving up power costs across the economy now sets the timeline for putting electric trucks to work.

Key Facts at a Glance

Amazon operates more than 40,000 Rivian electric delivery vans, up from 30,000 at the end of 2025, toward a target of 100,000 by 2030.
The company has installed more than 50,000 chargers at over 250 US delivery stations, one of the largest private charging networks in the world.
A depot service upgrade typically takes 6 to 18 months from the utility interconnection application, not from the day the vehicles arrive.
Power transformer procurement now averages about 128 weeks, and major substation work can take one to two years.
An unmanaged 150-van depot can hit power peaks near 2,800 kilowatts and demand charges above $42,000 a month; smart charging cuts that sharply.
The federal commercial charger tax credit lapsed on June 30, 2026, raising the importance of utility make-ready programs and state funding.

What Actually Slows a Depot Down?

The vehicles are rarely the bottleneck; the electrical service is. Fleet operators consistently report that the longest lead-time item in any depot project is the utility work, and that a service upgrade, meaning the larger electrical connection a depot needs to charge many vehicles at once, runs 6 to 18 months from the interconnection application, according to industry deployment guidance. The clock starts when the application is filed, not when the trucks are delivered, which is why fleets that order vehicles first routinely take delivery of electric trucks that then sit unused while the site waits for power.

The scale of what is being built makes the constraint concrete. Amazon has put more than 40,000 Rivian electric vans on the road and installed over 50,000 chargers across more than 250 US delivery stations, according to the company and to Rivian's most recent earnings. Even an operator at that scale has to solve the power problem site by site, because charging a depot full of vehicles can require as much electricity as a small factory, and the grid connection to deliver it does not exist at most industrial properties today.

Why Are Transformers the Choke Point?

Transformers are the choke point because a depot cannot energize without one and the equipment is in acute shortage. A transformer is the device that steps high-voltage grid power down to the level a building and its chargers can use, and demand from data centers, electrification, and grid replacement has overwhelmed the supply. Power transformer procurement now averages about 128 weeks, roughly two and a half years, with a national shortfall estimated near 30 percent, figures the industry attributes to a Wood Mackenzie market survey. Minor panel upgrades can be done in weeks, but a project that needs a new transformer or substation work faces a wait measured in quarters or years.

The problem intensifies with the largest loads. Megawatt-scale charging, the level required for heavy trucks, needs dedicated transformers and switchgear sized for industrial power, which turns a charging project into a grid-construction project. This is the same equipment bottleneck that constrains new generation and data-center connection, now landing on any owner who wants to electrify a depot or host fleet charging. Equipment availability, more than capital or permitting, sets the schedule.

What Does This Cost, and Who Pays?

Much of the electrical cost can be offset, if an owner knows where to look. Many utilities run make-ready programs, in which the utility funds the service upgrade, transformer, conduit, and panel work up to the meter, and for larger fleets that support can run from $50,000 to $500,000, according to fleet infrastructure cost analyses. These programs are frequently the largest single incentive available and the most often missed, because an owner has to ask the utility before finalizing equipment specifications, not after.

The federal picture has shifted in a way owners need to price in. The commercial charger tax credit that covered 30 percent of installed charging equipment lapsed on June 30, 2026, so a project that would have leaned on that credit now depends more heavily on utility make-ready funding and state programs, which vary widely by market. The practical consequence is that where a depot is located now determines not only how fast it can connect but how much of the cost someone else will cover, which makes the utility conversation the first step in any project, not a late one.

How Do Demand Charges Change Depot Economics?

Demand charges can dominate a depot's operating cost, and managing them is where the economics are won or lost. A demand charge is the part of a commercial electric bill based on the single highest burst of power a site draws in a billing period, and a depot that charges many vehicles at once creates exactly that kind of spike. An unmanaged depot of 150 vans can push peak demand near 2,800 kilowatts and generate demand charges exceeding $42,000 a month, according to fleet-scale charging research. Smart charging software, which staggers when vehicles draw power so they do not all charge at once, brings that peak down to a fraction of its unmanaged level.

Onsite battery storage does the same job from the other direction. A battery charged during off-peak hours discharges to cover the depot's peak charging window, cutting the demand charge without slowing the vehicles, and it doubles as backup power. The lesson for an owner is that the wired capacity of a site is not the only lever; how that capacity is managed determines whether an electrified depot runs at a competitive cost or an uncompetitive one. A depot designed without demand management can carry operating costs that were never modeled and that erase the fuel savings electrification was meant to deliver.

What Does This Mean for a Property Owner?

Electrical capacity has become a property attribute worth underwriting. For owners of warehouses, logistics parks, truck stops, and other fleet-adjacent assets, the ability to deliver large amounts of power quickly is turning into a leasing advantage, because a tenant electrifying a fleet will pay for a site that can charge vehicles now rather than one that waits two years for a transformer. A property with existing electrical headroom, or with the conduit and space to add capacity, can command tenant interest that a comparable site without power cannot.

The practical steps follow from the timeline. Engage the utility 12 to 18 months before any vehicles are expected, because the utility work, not the vehicles, sets the go-live date. Size the electrical groundwork, conduit, panel space, and service capacity, for a multiyear plan rather than the first phase, since trenching once costs far less than trenching twice. Ask the utility about make-ready funding and the applicable demand-charge rate class before specifying equipment. And treat onsite solar and storage as part of the design, both to manage demand charges and to reduce dependence on a grid connection that may be slow to arrive. Power access, more than any other factor, now determines which properties can serve the electric fleets already on the road.

Sources

Frequently Asked Questions

Why does connecting a depot take so long?

The delay is in the utility work, not the vehicles. A service upgrade that adds the electrical capacity a depot needs takes 6 to 18 months from the interconnection application, and if a new transformer or substation work is required, the wait can stretch longer because that equipment is in national shortage. The timeline starts when the application is filed, so the utility conversation should come first.

What is a make-ready program?

It is a utility program that funds the electrical infrastructure needed to support charging, including the service upgrade, transformer, conduit, and panel work up to the meter. For larger fleets this support can run from $50,000 to $500,000, and it is often the largest incentive available. An owner has to ask the utility about it before finalizing equipment plans.

Why are transformers so hard to get?

Demand from data centers, electrification, and the replacement of aging grid equipment has overwhelmed the supply of transformers. Procurement of power transformers now averages roughly 128 weeks, with a national shortfall estimated near 30 percent, so a project that needs new transformer capacity faces a long wait regardless of budget.

What happened to the federal charging tax credit?

The commercial charger credit that covered 30 percent of installed charging equipment cost lapsed on June 30, 2026. Projects that would have relied on it now depend more on utility make-ready programs and state funding, which differ widely by market, making location a larger factor in project economics.

How do demand charges affect a charging depot?

A demand charge is based on the highest burst of power a site draws in a billing period, and a depot charging many vehicles at once creates a large spike. An unmanaged 150-van depot can face demand charges above $42,000 a month. Smart charging software and onsite battery storage cut that peak sharply, which is often the difference between a depot that runs profitably and one that does not.

Keith Reynolds

Back to Blog