Depot charging and corridor charging are different businesses

Revio 360 · October 2026

Talk to two property owners about megawatt-class freight charging and you will hear the same vocabulary, the same power classes, the same regulatory backdrop, and two completely different businesses. A depot site and a corridor site can both carry a Megawatt Charging System installation and both serve Class 8 trucks, and still differ in almost everything that decides how the site is sized, financed and operated. Treating them as one asset class is the fastest way to size the wrong parcel for the wrong trucks.

Who shows up, and whether you know in advance

A depot is charging built behind a fleet's own fence, usually on a yard the fleet already operates or leases, serving a known, scheduled set of trucks that run predictable routes and return to the same gate every night. The operator knows which trucks arrive, roughly when, and how long each one will sit, because the fleet sets its own schedule. That knowledge is the whole advantage: demand is a planning input, not a forecast.

A corridor site is the opposite. It sits on a freight route and serves whichever trucks need power when they pass, fleets the site owner does not operate and in most cases has never met. The federally mandated rest break sets the window, but nothing on the site side controls who pulls in, how depleted their battery is, or how many trucks arrive in the same hour. Demand here is read off corridor volume and adoption curves, the same forecasting problem a passenger DC fast site faces, at a far higher power per stall.

The same megawatt, sized two different ways

Dwell time is the variable that separates the two electrically. A depot truck typically sits for hours, overnight at minimum, which means the energy it needs can be delivered at a lower rate spread across a long window, every stall drawing power on a staggered schedule the fleet itself can smooth. A corridor truck has one rest break and needs a meaningful state of charge back before it ends, which forces the power per stall up and compresses the draw into a short, simultaneous window instead of a smoothable one.

That difference runs straight into the interconnection application. A depot's load profile is knowable ahead of the utility conversation, scheduled arrivals and departures the fleet can hand over as a duty cycle, which lets the service be sized tightly to the real pattern rather than a worst case. A corridor site has no fleet to ask, so the utility sizing has to assume several trucks arriving and charging at once, because on a public corridor that eventually happens on a good day. The corridor site usually carries more installed capacity relative to its average load than the depot does, headroom the depot rarely needs to buy.

Two different owners, two different balance sheets

A depot is usually built to serve one fleet's own operation, and the property question is simpler: does the site exist to move that fleet's trucks through a charge cycle at the lowest reliable cost, full stop. There is no walk-up driver, no routing-app discovery problem, no public pricing decision. The yard is an operating asset supporting a transportation business, and its economics are judged on uptime and cost per session, not on attracting unknown demand.

A corridor site is a public-facing charging asset in the fullest sense, closer in structure to a Supercharger-class DC fast site than to a private yard. Whoever owns the dispensing equipment collects the charging margin on every session, and in California, metered energy delivered to a truck generates the same Low Carbon Fuel Standard credits a passenger stall earns, registered to whoever holds the equipment. A host that leases its corridor parcel to a network under a ground-rent arrangement has, by the same logic that applies to passenger charging, handed both lines away. A host that owns the stalls keeps them, and takes on the utilization risk that comes with serving demand it does not control.

Reliability carries different weight in each model too. A depot outage is an internal operating problem the fleet absorbs and schedules around. A corridor outage strands a driver mid-route on a federally timed break with nowhere else on the corridor to go, which is why uptime on a public freight site functions less like a maintenance metric and more like the product itself.

Reading your own parcel correctly

The practical question for an owner evaluating a yard or a roadside parcel is not "can this site support megawatt charging." Plenty can, on paper. The question is which business the parcel is suited to: a scheduled, single-tenant load with a known duty cycle and a simpler utility conversation, or a public asset with real upside, real utilization risk, and a reliability bar closer to a Supercharger site than a private yard. Sizing a corridor site like a depot leaves power on the table the first week two trucks arrive at the same hour. Sizing a depot like a corridor site buys headroom nobody on that fleet's schedule will ever use.