Construction Site Power 2026: Five Hydrogen Generator Makers to Watch
Introduction
Construction sites run on diesel — and that is becoming a problem. Urban sites face tightening noise and exhaust limits, low-emission zones are spreading across cities in Europe and North America, and public-infrastructure contracts increasingly carry carbon-reduction obligations.
Hydrogen power generators solve the diesel problem at the point of use: zero combustion, zero local emissions, near-silent operation, only water and heat as by-products. The technology is no longer experimental — a small but growing fleet works on real sites, and several manufacturers archived here are worth watching. This is a horizontal look at five of them, not a ranking: each answers the questions of power, fuel and regulation every contractor faces.
How to Read This List
Three variables separate these makers: technology route (PEM for fast-response mobile power, SOFC for high-efficiency continuous generation), power architecture (mobile, modular, containerized, self-contained) and fuel strategy (delivered vs. on-site production). For the underlying trade-offs, see hydrogen vs. diesel generators, how to choose the right generator, and the construction and remote sites section.
1. EODev — Mobile, Towable Hydrogen Power Units
EODev (Energy Observer Developments), near Paris and founded in 2019, designs hydrogen power generators to replace diesel and gasoline generators on land and sea (EODev manufacturer archive). Its land platform, the GEH2, pairs a Toyota-derived PEM stack with a lithium-iron-phosphate battery buffer that absorbs load peaks. Rated at 88 kW continuous (110 kVA ESP), it runs from -10°C to 50°C, weighs 3.4 tonnes and can be crane-lifted by four roof sling rings — built for construction-site handling (EODev, GEH2 product page). The GEH2 catalogue listing confirms 88 kW (110 kVA ESP) at around 50% efficiency.
The track record is concrete. In autumn 2021, rental giant LOXAM deployed a GEH2 for Vinci Constructions to power an entire worksite in central Paris — running the site life base and recharging an electric shovel, saving 156 kg of CO2 over three days (EODev, "Zero emission roadworks in the center of Paris" case study). Repeated on other Vinci sites, it demonstrated the defining pattern of hydrogen site power: zero exhaust at breathing height, noise far below a diesel set, compressed-hydrogen fuel rather than diesel drums.
EODev also moved early into exports: Australian equipment dealer Blue Diamond Machinery ordered three GEH2 units in December 2021 for construction sites, mining and major events (EODev news, December 8, 2021); in North America, rental giant United Rentals added GEH2 units to its fleet through distributor Generac (Business Wire, October 18, 2022). For contractors, EODev proves a hydrogen power generator can be treated like a rental genset — moved, paralleled, serviced by the rental chain.
2. Panasonic — Modular Pure-Hydrogen PEM at Scale
Panasonic, the Osaka-based group, has scaled pure-hydrogen PEM fuel cells since launching the 5 kW H2 KIBOU unit in October 2021 (Panasonic North America). The design is modular: 5 kW units stack and containerize to commercial scale. Our catalogue lists the PH1 (5 kW, 56%) and H2 KIBOU 10 kW (57%), and Panasonic calls 100 linked units with integrated control a world first (Panasonic Holdings).
The proof points are operational. At its Kusatsu factory in Shiga, Panasonic built what it calls the world's first RE100 manufacturing site running fully on on-site renewable power — pure-hydrogen fuel cells, solar and storage — construction starting October 2021, demonstration unveiled April 2022 (Panasonic North America). In October 2024, Osaka Metro began a demonstration pairing 100 kW of solar with 10 kW of pure-hydrogen fuel cells at its Morinomiya yard, running through March 2026 (Panasonic Newsroom Global, October 24, 2025). In the UK, Panasonic Manufacturing UK planned a 2025 Cardiff demonstration using 21 of the 5 kW units (105 kW) with existing solar and 1 MWh of batteries.
For construction, Panasonic's relevance is the containerized block: units rack into 100 kW-class containers for site compounds, welfare cabins and lighting towers, with heat recovery for hot water — the modular, factory-built option for container-logistics-minded contractors.
3. Cummins / Accelera — Genset Heritage Meets PEM Systems
Cummins is the name contractors already know from diesel power: decades of genset manufacturing and service give it an unusual hydrogen advantage — a global service network and packaging that already understands how sites operate. In 2022, Cummins consolidated its electrified power and hydrogen businesses under the Accelera brand (Cummins/Accelera company materials).
Accelera by Cummins develops PEM fuel cell systems for stationary and mobile hydrogen power generation, spanning backup and prime power, mobile and stationary generator packages, and integrated power electronics and controls (Accelera manufacturer archive). That integration layer matters: a hydrogen power generator is not just a stack — it needs power conversion, controls, paralleling and remote monitoring, which Cummins already industrializes.
What makes Accelera a maker to watch for 2026 is the pipeline rather than a single flagship unit: a full-service OEM with Cummins' parts-and-service backbone entering prime-power hydrogen generation. For contractors whose procurement runs on a trusted genset brand, it is the low-friction path from diesel to hydrogen — same supplier, same support model, different fuel.
4. Toshiba Energy Systems — Self-Contained Hydrogen Energy Systems
Toshiba Energy Systems & Solutions, based in Kawasaki, Japan, takes a different approach: instead of assuming hydrogen will be delivered, H2One produces it on site. H2One integrates photovoltaic panels, a PEM electrolyser, hydrogen storage and a fuel cell in one package — rated at 3.5 kW fuel cell output (10 kW battery) in our H2One listing — and runs where there is no grid at all (Toshiba manufacturer archive). Toshiba also offers a standalone 100 kW pure hydrogen fuel cell with 50%+ electrical efficiency (LHV).
The record is real and dated. H2One began full-scale operation on the rooftop of Toranomon Hills Business Tower in Tokyo in June 2020 (Toshiba ESS news release, June 10, 2020). In November 2020, Toshiba opened the first H2One Multi Station in Tsuruga City, Fukui, which fills fuel cell vehicles with green hydrogen and supplies green power (Toshiba ESS news release, November 5, 2020). Delivery records also show H2One supplying electricity and hot water for evacuees at Kawasaki Marien and at Tokyo Metropolitan University (Toshiba delivery records).
For construction, the self-contained architecture is the differentiator: a remote compound with no hydrogen supply can still run a hydrogen power unit that makes its own fuel from water and sun. That autonomy, plus disaster-resilience design, positions Toshiba strongly for off-grid infrastructure, tunnelling bases and sites where fuel logistics are the binding constraint.
5. Sunfire — High-Efficiency SOFC for Continuous Site Power
Sunfire GmbH, founded in Dresden, Germany in 2010, sits at the opposite end of the spectrum: solid oxide fuel cells (SOFC) that run hot, steady and exceptionally efficient (Sunfire manufacturer archive). Its SOFC power units convert hydrogen into electricity at high efficiency for industrial and commercial installations. Solid oxide chemistry needs no platinum-group catalysts, operates at 500-1000°C, and reaches around 60% electrical efficiency (LHV) — the highest of any fuel cell type (U.S. DOE, April 2016; see also our PEM vs Alkaline vs SOFC guide).
Sunfire's relevance to construction is narrower but important: where a site needs continuous, high-utilization power for months or years — a major plant build, a tunnelling operation, a permanent compound — efficiency compounds into fuel savings, and high-grade waste heat serves site heating and hot water. Its solid oxide stack heritage feeds both its fuel cell and electrolysis lines.
The trade-off: SOFC units are stationary, heavier and slower to start than PEM units; Sunfire is a maker to watch for the fixed, long-duration slice of construction power, not rental-style mobility.
At a Glance: The Five Makers
| Maker | Country | Technology | Representative unit (rated) | Best-fit site role |
|---|---|---|---|---|
| EODev | France | PEM (mobile, with battery buffer) | GEH2 — 88 kW continuous (110 kVA ESP) | Urban & residential construction, events, site EV charging |
| Panasonic | Japan | PEM (pure hydrogen, modular) | PH1 5 kW / H2 KIBOU 10 kW, scalable to ~1 MW | Site compounds, welfare cabins, containerized power blocks |
| Cummins / Accelera | USA | PEM systems + generator packaging | Backup/prime and mobile/stationary packages | Prime power at scale with OEM service network |
| Toshiba Energy Systems | Japan | PEM + on-site electrolysis (self-contained) | H2One 3.5 kW FC (+10 kW battery); Pure Hydrogen Fuel Cell 100 kW | Remote sites with no hydrogen fuel supply |
| Sunfire | Germany | SOFC (high-temperature) | Modular SOFC power units | Continuous, high-efficiency stationary power |
Choosing by Power, Fuel and Regulation
The right maker depends on three site-specific questions, not on brand preference:
- Power and duty: Match the unit to the load: a 90 kVA-class towable unit (EODev) suits a working site with battery-absorbed peaks; a 100 kW modular block (Panasonic, Toshiba) suits a compound with steady loads; multi-month baseload rewards SOFC efficiency (Sunfire).
- Fuel access: If compressed hydrogen delivery is practical, delivered-fuel designs are simplest; if not, self-generating designs (Toshiba's H2One) keep the site independent of fuel logistics.
- Regulation: Low-emission zones, night-time noise limits, air-quality permitting and carbon reporting increasingly decide what can be deployed; hydrogen units clear all of these at the point of use — why urban projects adopt them first (EODev, Paris case study).
Contractors should plan the transition: hydrogen units often serve as a bridge while grid reinforcement is underway, then become backup once the connection is live (EODev Q&A materials) — one unit, two jobs.
Conclusion
Site power is moving from diesel to hydrogen, and 2026 is the year the move stopped being a pilot. These five makers illustrate the routes available: mobile PEM units that behave like rental gensets (EODev), modular pure-hydrogen blocks scaling from 5 kW to a megawatt (Panasonic), full-service OEM packages with a global genset network (Cummins/Accelera), self-contained systems that make their own fuel (Toshiba), and solid oxide units for continuous baseload (Sunfire).
None of the five is "the best" — each answers a different combination of power, fuel access and regulatory pressure. The direction is unambiguous: sites that ran diesel for decades are now specifying zero-emission hydrogen power, and the makers pairing the right stack chemistry with construction-grade packaging are the ones to watch. Compare candidate units in our Compare section and use our selection guide before you spec.
Sources
- EODev, "Zero emission roadworks in the center of Paris" (case study, Construction & Mining) — eo-dev.com
- EODev, GEH2 product page (ratings and specifications) — eo-dev.com
- AKA Energy Systems, "AKA launches EODev's hydrogen powered generators to the North American market" (December 2021) — aka-group.com
- Panasonic Newsroom Global, "Osaka Metro Gearing Up for Clean Transportation with Panasonic Hydrogen Energy and Solar Power Technology" (October 24, 2025) — news.panasonic.com
- Panasonic Holdings, Sustainability — "Reducing CO2 Emissions in Factories" (Kusatsu, PMUK Cardiff) — holdings.panasonic
- Panasonic North America, "Sustainable Research & Development" (H2 KIBOU launch, October 2021) — na.panasonic.com
- Toshiba Energy Systems & Solutions, news release — H2One full-scale operation at Toranomon Hills Business Tower (June 10, 2020) — global.toshiba
- Toshiba Energy Systems & Solutions, news release — first H2One Multi Station in Tsuruga City (November 5, 2020) — global.toshiba
- Toshiba, Hydrogen Energy — delivery records (Kawasaki Marien, Tokyo Metropolitan University) — global.toshiba
- U.S. Department of Energy, Fuel Cell Technologies Office, "Comparison of Fuel Cell Technologies" (April 2016) — energy.gov PDF