Why this theme is on the tape
Data halls are waiting on the grid. In Texas, ERCOT’s interconnection queue had more than 1,800 projects and about 474 gigawatts of requested load by early August 2026 — more than five times the grid’s record peak — and the governor ordered a verification audit before new data-center connections. Behind-the-meter generation is how developers try to keep building while that queue sits. Fuel cells showed up as the product that can be poured on a pad in months, not the five-year wait for a new substation.
The headline that travels with those pads is hydrogen. The systems that are actually being ordered are mostly solid-oxide or carbonate fuel cells running on pipeline natural gas. They are hydrogen-capable. That is not the same as a hydrogen plant, a hydrogen tube trailer, or a diesel replacement that already burns H₂. This article keeps those clocks apart, then lists the tickers that print when the theme runs. It is a map, not a ranking.
Two products, one word
A solid-oxide fuel cell (the Bloom Energy Server) oxidizes a fuel without a flame. Today that fuel is almost always natural gas, because the pipe already exists at gigawatt scale. Bloom’s platform can also take biogas or hydrogen when those molecules are commercial and operational at the site. Oracle said so in so many words on Project Jupiter: gas now, hydrogen or biogas later, once they are viable at campus scale.
A proton-exchange-membrane (PEM) fuel cell — Plug Power’s GenSure line, the Microsoft backup prototype — needs hydrogen at the skid. No pipe, no power. Pairing it with an on-site electrolyzer is how vendors try to skip a missing hydrogen trucking network. That stack is closer to “hydrogen use at a data center.” It is also the stack that is still mostly a demonstration. Gas SOFC is the book. Hydrogen PEM is the pilot.
What is shipping, and what is only contracted
Bloom Energy (NYSE: BE) is the name with a live data-center P&L. For the quarter ended 30 June 2026 it reported $1.065 billion of revenue, the first time it cleared $1 billion in a quarter, up 166% year over year. Product revenue was $935.4 million, up 215%. Net income attributable to common stockholders was $196.3 million. Operating cash flow for the first half was $300.0 million. Cash, cash equivalents, and restricted cash were $2.69 billion against $2.48 billion of recourse debt. Full-year revenue guidance was raised to $3.9–$4.2 billion. Those are one company’s shipments and a guide. They are not 2.45 gigawatts already humming in New Mexico.
The contracted map is larger than one quarter. Oracle’s Project Jupiter campus in Doña Ana County, New Mexico, is designed around up to 2.45 GW of installed Bloom capacity, replacing an earlier gas-turbine and diesel plan. Oracle’s master agreement with Bloom is for up to 2.8 GW, with 1.2 GW already contracted across U.S. sites. Equinix expanded to more than 100 MW across 19 data centers. American Electric Power has a supply agreement for up to 1 GW, with a first 100 MW order placed in November 2024. Brookfield’s financing framework for Bloom-powered AI sites went from $5 billion to $25 billion on 30 June 2026 — a capital sleeve, not megawatts on the ground. Construction at Jupiter was described as underway in April. Permits and company comments still point to natural gas as the fuel that will start those servers.
Where hydrogen itself still sits
Microsoft and Plug Power ran a 3 MW PEM backup demonstration at Plug’s Latham, New York site: two 40-foot containers, a simulated data-center load, the same acceptance tests Microsoft uses on diesel. That prototype matched diesel on paper. It was not a commercial fleet, and it was not a 2026 hyperscale rollout. Plug’s GenSure HP platforms are rated from 500 kW to 1.5 MW and can be paralleled. Rating a box is not the same as installing a campus.
In July 2026 Plug sold its Graham, Texas land and 164 MW of interconnection assets to Stream Data Centers — a liquidity sale, not a hydrogen data hall coming online. The same release said Stream and Plug were “actively exploring” deployments of Plug products into the data-center industry. Exploring is not a purchase order. A separate MarketNeon note covers Plug’s Q2 hydrogen-network print: three plants at about 40 tons a day, and a quarter that still lost $190 million. Texas data-center hydrogen ideas sat under the state’s viability review on that call. An electrolyzer FID in the United Kingdom or Australia does not put hydrogen next to a GPU hall in Virginia.
Names that print when this theme runs
These are the tickers that usually move when headlines say “hydrogen” and “data center” in the same sentence. They are not a ranked list, and they are not a basket to trade. Each one sits on a different clock.
- BE (Bloom Energy) — the on-site SOFC book. Q2 2026 already printed more than $1 billion. Oracle, Equinix, AEP, and Brookfield are the named counterparties. Fuel today is gas. Hydrogen is a later option on the same box.
- PLUG (Plug Power) — PEM fuel cells, electrolyzers, and its own hydrogen plants. The Microsoft 3 MW backup demo and the Stream “exploring” line are the data-center mentions. The operating company is still material-handling and fuel.
- FCEL (FuelCell Energy) — carbonate fuel cells. June 2026 agreement with Fit Energy: deposit on an initial 30 MW for delivery later in 2026, and optional later phases that could reach 380 MW if Fit elects them. Optional phases are not booked revenue. Two earlier data-center talks (SDC up to 450 MW, Inuverse up to 100 MW in Daegu) were non-binding.
- LIN (Linde) — industrial gases. The name that shows up when a site actually needs hydrogen molecules, not a fuel-cell server. A gas major’s hydrogen sales are not a data-center thesis by themselves.
- ORCL (Oracle) — the offtaker on Project Jupiter, not a hydrogen stock. The campus is a fuel-cell microgrid plan sized in gigawatts. Until those servers are in service, it is a power-design headline on a software-and-cloud tape.
- BLDP (Ballard) — PEM, mostly mobility and bus/rail stacks. It prints when the hydrogen tape is loud. It does not have a named gigawatt data-center book in 2026.
- HYLN (Hyliion, often typed Hyllion) — KARNO linear generators that can run on hydrogen later. The live book is Navy research-and-development contracts. Data-center demand is non-binding letters of intent, not purchase orders. A separate MarketNeon note covers those awards.
What this does not tell you
A $1 billion Bloom quarter and a 2.45 GW Oracle campus design are evidence that hyperscalers will buy on-site fuel cells to beat the interconnection queue. They are not proof that those gigawatts energize on the announced schedule, that natural-gas SOFCs later switch to hydrogen, or that PEM backup replaces diesel at commercial scale. A $25 billion Brookfield framework is financing capacity. Fit Energy’s optional 350 MW is an option. Stream and Plug exploring a product line is a sentence in a press release. Hyliion’s Navy awards are R&D, not a hydrogen campus in service.
On MarketNeon, BE is the chart on this page because it is the name already shipping into data halls. PLUG, FCEL, LIN, ORCL, BLDP, and HYLN can run hot on the same headline while their clocks stay different. This article is context for those prints. It does not rank the names, and it does not tell anyone to buy or sell.