There is a particular kind of transit story that never makes the evening news: not a ribbon-cutting, not a scandal, just a piece of infrastructure that was announced with confidence and then quietly failed to arrive on schedule. Foothill Transit, the agency that moves people through the San Gabriel and Pomona Valleys east of Los Angeles, is living inside one of those stories right now. It operates the largest hydrogen fuel-cell bus fleet in North America. It announced a second hydrogen fueling station in September 2025 with a price tag of $11.3 million and an order for 19 more buses. A year later, a September 22, 2026 status check in Metro Magazine described the Arcadia project as bigger than a demonstration but not yet operational, with schedule, funding, and operating status all still "evolving." That gap between fleet ambition and fueling reality is the most instructive thing happening in zero-emission transit right now.
The Agency That Keeps Betting Early
Foothill Transit is not a household name outside Los Angeles County, which makes it an unlikely candidate to be setting the continent's pace on hydrogen. But its history explains a lot.
A 327-Square-Mile Suburban Laboratory
Foothill serves roughly 327 square miles of eastern LA County with a service-area population near 1.5 million, according to figures presented through SCAG's Toolbox Tuesday series. It runs 36 local and express routes and carries about 12.6 million boardings a year, or roughly 43,000 on a typical weekday. Other sources tell a slightly different story: a Ballard Power post cites roughly 7 million annual riders and a 359-bus fleet. The discrepancy is normal in transit reporting, where service-area estimates and vintage years diverge, but it is worth naming rather than smoothing over. The SCAG numbers are the better primary reference.
From Fast-Charge Batteries to Fuel Cells
Under its "Greening Big" sustainability program, Foothill claims to have been first in the country to deploy fast-charge battery-electric buses. That matters to the hydrogen story, because it means the agency is not a hydrogen partisan that skipped the battery era. It tried the batteries first, at scale, and then went looking for something that behaved more like the diesel operations it already knew. The broader tradeoff between those two technologies is worth reading in full in /posts/hydrogen-vs-battery-electric-buses-zero-emission-transit.
Operating Through Contractors
Foothill uses contracted private operators, with Keolis among the contractors running service. That structure is easy to overlook, but it shapes how new technology lands: the agency buys the buses and builds the fueling, while a contractor absorbs the daily operational learning curve. Every new fuel type is also a new training program, a new maintenance certification, and a new set of hiring requirements, which is exactly the pressure point described in /posts/zero-emission-buses-workforce-readiness-gap.
What 33 Hydrogen Buses Actually Look Like
The headline number is 33. Foothill operates 33 New Flyer Xcelsior CHARGE H2 fuel-cell buses, a figure confirmed independently in Mass Transit magazine's "Special Report: 2026 U.S. Bus Fleets" and cited by Foothill Transit and the Fuel Cell and Hydrogen Energy Association.
The Pomona Station and Its 25,000-Gallon Tank
All of those buses depend on a single facility: the Pomona Hydrogen Fueling Station, built around a 25,000-gallon tank that Foothill describes as the largest hydrogen fuel tank used for transit in North America. A New Flyer press release covering a follow-on order of 13 fuel-cell-electric buses described the result as "the largest fuel cell fleet in North America." One tank, one yard, one continent-leading fleet. The concentration is impressive and also, plainly, a single point of failure.
Why Refueling Speed Is the Whole Argument
The case for hydrogen in a suburban express operation comes down to dwell time. A fuel-cell bus refuels in minutes; a battery-electric bus on depot charging needs hours, and fast-charge infrastructure carries its own cost and grid-capacity headaches. For an agency running long-haul express routes across 327 square miles, that difference is not a rounding error. It is the difference between a one-for-one diesel replacement and a service plan rewrite. The environmental logic behind the whole shift is covered more broadly in /posts/sustainable-mobility-the-role-of-electric-buses-in-reducing-urban-emissions.
Arcadia: The Station That Hasn't Happened Yet
On September 25, 2025, Clean Energy Fuels Corp. (NASDAQ: CLNE) announced it had been awarded a contract to design, build, and maintain a second hydrogen fueling station for Foothill Transit, extending a partnership between the two organizations that runs more than 20 years. The news was carried by Global Hydrogen Review, H2-Tech, Automotive World, TMCnet, and TipRanks.
An $11.3 Million Design-Build at a Working Yard
The site is Foothill's Arcadia bus yard on North Santa Anita Avenue, which currently fuels the agency's renewable natural gas buses. Hydrogen and RNG infrastructure will coexist there, which is its own small engineering story. The project is an $11.3 million design-build, partially funded by federal and state grants. The station is designed to store liquid hydrogen and dispense it in gaseous form, preserving the fast-refuel advantage.
Nineteen Buses Waiting on a Fuel Supply
The initial order tied to Arcadia is 19 new hydrogen fuel-cell buses, which would push Foothill's total hydrogen fleet toward roughly 50 or more once everything is in place. That is the arithmetic that makes the delay consequential: buses without a fueling station are expensive parked assets, and a fueling station without buses is an expensive slab.
A Year of "Evolving" Status
Twelve months on, the project sits in that uncomfortable middle category. Mass Transit's 2026 fleet report confirms Foothill still operates 33 hydrogen buses and is adding the Arcadia station to power the 19 new ones. The September 2026 assessment in Metro Magazine is blunter: bigger than a demonstration, not yet operational. Nobody has canceled anything. Nothing has opened either.
Four Plausible Reasons a Station Slips
Here is the honest caveat: neither Foothill Transit nor Clean Energy Fuels has publicly detailed a root cause, and the trade coverage that describes the project's status as "evolving" does not name one either. What can be said is that hydrogen fueling projects at working bus yards tend to slip for a short list of familiar reasons, and Arcadia has exposure to most of them.
- Permitting and fire-code review. Siting liquid hydrogen storage at a yard that already dispenses renewable natural gas means stacking one hazardous-materials approval on top of another, with setback distances, separation requirements, and local fire-authority sign-off all in play. Agencies that have built hydrogen depots consistently describe permitting as the longest single line item.
- Supply-chain lead times. Liquid hydrogen storage vessels, cryogenic pumps, vaporizers, and high-pressure dispensers are low-volume, largely made-to-order equipment. Lead times measured in quarters rather than weeks are ordinary in this category, and a single long-pole component can hold an entire commissioning date hostage.
- Grant-disbursement choreography. A project that is partially funded by both federal and state grants has to align reimbursement schedules, environmental and procurement compliance reviews, and construction billing. When those calendars do not line up, shovels wait even though the money is committed.
- Sequencing around live operations. Arcadia is not an empty lot. It fuels and stores buses that have to pull out on schedule every morning, which forces construction into nights, weekends, and phased shutdowns of fueling lanes.
None of that is a confirmed explanation, and it would be a mistake to treat it as one. But it is the right set of questions for any agency reading Foothill's experience as a template, because these are the categories that decide whether a fueling buildout tracks a bus delivery schedule or trails it by a year.
Foothill as a National Bellwether
Zoom out and Foothill's 33 buses look much larger than they sound, because the national fuel-cell base is still small.
8,116 Zero-Emission Buses, and 855 Fuel Cells
CALSTART's "Zeroing in on Zero-Emission Buses" report, updated March 2026 with data as of July 2025, counts 8,116 full-size zero-emission buses in service or on order nationwide, up 16 percent year over year from 7,028, a gain of 1,088 vehicles, plus another 1,398 small ZEBs. Within that total, fuel-cell electric buses account for just 855 vehicles. Against that baseline:
- Foothill's current 33 buses are roughly 4 percent of every FCEB in the country.
- A completed Arcadia buildout would take the agency past 50, keeping its share in the neighborhood of 6 percent even as the national fuel-cell count continues to grow.
- One suburban California agency, in other words, is a measurable fraction of an entire national technology category.
The Map Is Widening
The same CALSTART update shows Florida and Texas now ranking among the top zero-emission bus states, breaking the old California-and-Northeast pattern. Agencies in New York, Washington, and Maryland launched new hydrogen fuel-cell bus projects during the reporting period. One footnote for data watchers: CALSTART's bus-market research is now also published under the name Catalyst Mobility, so the same dataset may appear under either label.
The Spread Beyond Southern California
Hydrogen transit is no longer a single-agency curiosity, though it is still moving slowly.
Montebello's First Three Buses
Montebello Bus Lines put its first three hydrogen fuel-cell buses into service in August 2026, funded through the FTA's Urbanized Area Formula Program, and is planning a permanent hydrogen fueling station of its own, according to the Fuel Cell and Hydrogen Energy Association. Three buses is not a fleet, but it is a second Los Angeles County agency committing to the same fuel and facing the same infrastructure question.
Ontario Does Its Homework
North of the border, CUTRIC hosted a hydrogen fuel-cell bus readiness workshop on March 20, 2026 in Mississauga, sponsored by the transit agency MiWay. The framing there is telling: readiness, not deployment. Canadian agencies are studying the depot, workforce, and supply questions before ordering vehicles, which is close to the inverse of the American sequence.
What Arcadia Will Actually Tell Us
The honest read on Foothill Transit is that the buses are the easy part. New Flyer can build them, FTA formula money and state grants can help pay for them, and contracted operators can run them. What cannot be ordered off a production line is a fueling station that opens on time at a yard already busy dispensing renewable natural gas.
The Buses Were Never the Hard Part
Hydrogen's operational advantage over battery-electric charging is real, and Foothill has more evidence for it than any other North American agency. Minutes at the pump instead of hours on a charger is exactly what a 327-square-mile express network needs. But that advantage only exists downstream of infrastructure that, at Arcadia, is visibly a year behind the announcement. A fleet plan is a procurement document; a fueling plan is a construction project, a permit stack, and a supply chain. Agencies that budget attention for the first and assume the second will follow are the ones most likely to repeat this year.
Why Every Hydrogen Order in the Country Is Watching
Every agency in New York, Washington, Maryland, Florida, Texas, and Ontario now weighing a hydrogen order is implicitly betting that its fueling buildout will track its bus deliveries. Foothill is the closest thing the continent has to a controlled experiment on whether that bet pays. If Arcadia opens and 19 buses roll into service, the fast-refuel case gets a lot stronger for suburban express operations everywhere. If the station keeps evolving through 2027, the more cautious CUTRIC-style sequence, in which readiness work precedes vehicle orders, starts looking like the smarter template.
The Number to Watch Is 19, Not 33
The fleet count is the statistic that gets quoted, and it is the wrong one. Thirty-three buses already prove that a mid-size suburban agency can run fuel cells at scale with a contracted workforce and a single 25,000-gallon tank. What remains unproven is the repeatable part: whether a second station, at a second yard, with mixed fuels and mixed grant sources, can be delivered on a schedule an agency can plan service around. That is the question Arcadia answers, and it will answer it whether or not anyone issues a press release. Either way, the number to watch is not 33. It is whether the next 19 ever get fueled.