Quick answer: ZeroAvia’s Propulsion Center of Excellence at Paine Field in Everett, Washington opened on April 24, 2024 as the company’s first U.S. manufacturing facility. Two years later, in April 2026, the 136,000-square-foot building remains the most significant single hydrogen-electric aviation manufacturing site in North America. It manufactures electric motors and power electronics for ZeroAvia’s ZA600 (600 kW) and ZA2000 (1.8 MW) hydrogen-electric powertrains, and supplies aviation-grade components to other electric and hybrid aircraft programs. The company’s public roadmap targets a 300-mile-range, 10–20-seat hydrogen-electric powertrain by the end of 2026 and a 700-mile-range, 40–80-seat powertrain by 2028.
Why a Two-Year Anniversary Is Actually a Story
On April 24, 2024, then-Governor Jay Inslee, U.S. Rep. Rick Larsen (WA-2), and U.S. Rep. Suzan DelBene (WA-1) cut a ribbon at a 136,000-square-foot building on the south side of Paine Field. The building is ZeroAvia’s Propulsion Center of Excellence — the company’s first U.S. manufacturing facility, and the largest single physical bet in North American hydrogen aviation at the time.
Two years later, the building is still here. The bet is still live. Most aerospace coverage in Everett is still about the 737 MAX North Line ramping up across the airfield and the 777X moving through FAA Phase 4A. But the quieter story two miles away is that Paine Field is now the anchor address for hydrogen-electric aviation in the United States — and the manufacturing capacity that has to exist before any commercial hydrogen flight ever happens is being built right here.
What ZeroAvia Actually Builds at Paine Field
ZeroAvia’s core technology is a hydrogen-electric powertrain. Hydrogen fuel cells produce electricity. The electricity drives high-output electric motors. The motors spin propellers. Water vapor is the only emission. The energy density of hydrogen — roughly 100 times that of the best lithium-ion batteries available today — is what makes the math work for regional aircraft, where battery-only designs run out of range long before they run out of seats.
The Everett Propulsion Center of Excellence builds two specific things inside that powertrain: the electric motors that turn the propeller, and the power electronics — inverters, converters, motor controllers — that condition the electricity coming off the fuel cell. The facility supports both of ZeroAvia’s announced systems (the 600-kilowatt ZA600 and the 1.8-megawatt-class ZA2000) and a separate components business that sells aviation-grade motors and inverters to other electric and hybrid aircraft programs.
That second piece matters more than most coverage acknowledges. It means the Everett facility is not betting everything on ZeroAvia winning the entire hydrogen aviation race. Every electric aircraft program in the world that needs an aviation-grade motor or inverter — small electric trainers, hybrid regional aircraft, electric vertical takeoff platforms — is a potential customer for components manufactured at Paine Field.
Why ZeroAvia Picked Everett
ZeroAvia announced Paine Field as its U.S. R&D site in January 2022 and broke ground on the manufacturing expansion the following year. The reasons it picked Everett look familiar to anyone who has watched aerospace site selection in Snohomish County:
- The supply chain. Snohomish County is home to more than 1,350 aerospace-related business establishments — composite shops, precision machining houses, test labs, avionics integrators. Every one of them makes the job of standing up a new propulsion line easier than it would be in a city without aerospace muscle memory.
- The workforce. The same machinists, engineers, and technicians who build Boeing wide bodies can build hydrogen fuel cell stacks and high-output electric motors. Aviation-grade manufacturing skills do not have a propulsion bias. The IAM 751 Machinists Institute pipeline that feeds the 737 North Line is the same pipeline ZeroAvia can recruit from.
- The airport. Paine Field is one of the few general aviation airports in the country with the runway length, the FAA infrastructure, and the operational tempo to support flight testing of new propulsion systems. ZeroAvia conducts ground testing, hot-fire tests, and component validation directly on the airfield.
- The state’s commitment. The Washington State Department of Commerce backed the original site selection with a state grant, citing aerospace cluster development and decarbonization as joint policy goals. The bipartisan congressional turnout at the 2024 ribbon cutting reflected that.
The Public Roadmap, Two Years In
ZeroAvia’s published roadmap targets two milestones the Everett facility is building toward:
- End of 2026: A 300-mile-range hydrogen-electric powertrain in a 10- to 20-seat aircraft — the size class served today by the Cessna Caravan, the Britten-Norman Islander, and the De Havilland Twin Otter on short regional and commuter routes.
- By 2028: A 700-mile-range, 40- to 80-seat powertrain — the size class served today by the De Havilland Canada Dash 8 and the ATR 42/72 on regional turboprop routes.
If those targets land on time, the Everett facility will be the manufacturing site for the first commercially certified hydrogen-electric propulsion system in U.S. regional aviation. The launch market will not be transcontinental airlines. It will be the regional carriers, cargo operators, and corporate fleets that fly short hops where the energy density of hydrogen and the simplicity of an electric motor become competitive with a turbine.
It is important to be precise about what 2026 means: the powertrain target is the propulsion system itself, not a passenger-carrying delivery. Aircraft integration, FAA supplemental type certification, and operator approval are separate gates that follow.
What the Anniversary Tells Us About Everett’s Aerospace Future
For decades, the propulsion expertise on Paine Field has been turbofan-and-turboprop. Boeing’s twin-aisle widebody program, the 737 MAX North Line ramping up now in Everett’s first single-aisle final assembly line, Pratt & Whitney suppliers, and GE Aerospace partners have all built around that single technology base. Two years of ZeroAvia at Paine Field has added a second propulsion technology base: hydrogen-electric. The two are not in competition for the foreseeable future — wide bodies will keep flying the long-haul missions that hydrogen cannot reach for years — but they are now neighbors on the same airfield, drawing from the same workforce, and supplied by some of the same Snohomish County vendors.
That layered model — legacy aerospace and clean propulsion sharing infrastructure — is what makes Everett different from any other aerospace cluster in the country right now. The 777X is moving through FAA certification at one end of the airfield. ZeroAvia is building the manufacturing capacity for the next regional propulsion technology at the other.
Frequently Asked Questions
Where exactly is ZeroAvia’s Paine Field facility?
ZeroAvia’s Propulsion Center of Excellence is located on the south side of Paine Field in Everett, Washington. The 136,000-square-foot facility is the company’s first U.S. manufacturing site and houses both R&D operations and the production line for electric motors and power electronics.
When did ZeroAvia open at Paine Field?
The ribbon cutting was on April 24, 2024. ZeroAvia first announced Paine Field as its U.S. R&D site in January 2022 and broke ground on the manufacturing expansion the following year. The two-year anniversary was April 24, 2026.
What does ZeroAvia manufacture in Everett?
The Everett facility manufactures the electric motors and power electronics that go into ZeroAvia’s hydrogen-electric powertrains — including the 600-kilowatt ZA600 and the 1.8-megawatt-class ZA2000 — and aviation-grade components sold to other electric and hybrid aircraft programs.
How does a hydrogen-electric powertrain work?
Hydrogen fuel cells generate electricity. The electricity drives high-output electric motors. The motors spin propellers. Water vapor is the only emission. The energy density of hydrogen is roughly 100 times that of the best lithium-ion batteries, which is what makes the math work for regional aircraft.
What is ZeroAvia’s roadmap?
The public roadmap targets a 300-mile-range hydrogen-electric powertrain in a 10- to 20-seat aircraft by the end of 2026, and a 700-mile-range, 40- to 80-seat powertrain by 2028. Both are powertrain targets, not passenger-carrying delivery dates.
Is ZeroAvia in competition with Boeing in Everett?
No. Boeing’s commercial program in Everett is in widebody and single-aisle commercial aviation that hydrogen-electric propulsion will not reach for the foreseeable future. ZeroAvia is targeting regional aircraft in the 10- to 80-seat class. The two propulsion technologies share workforce, suppliers, and airfield infrastructure but operate in different market segments.
Who attended the original ribbon cutting in 2024?
Then-Washington Governor Jay Inslee, U.S. Rep. Rick Larsen (WA-2, the district that includes Paine Field), and U.S. Rep. Suzan DelBene (WA-1, the neighboring district). The bipartisan turnout reflected the state’s commitment to aerospace cluster development and decarbonization as joint policy goals.
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