Fuel Tech, Inc. (FTEK) | The Buildout — AI Infrastructure
The Verdict
Fuel Tech sells pollution-control equipment and specialty chemicals to operators of stationary combustion sources — power plants, industrial boilers, incinerators, and furnaces. Its link to the AI buildout runs through one product family: selective catalytic reduction, or SCR, which strips nitrogen oxides from the exhaust of the gas turbines and reciprocating engines that data centers increasingly run on site. The company is a subcontractor, not a prime. It sells to turbine and engine makers and to data-center integrators, and it states that its own visibility into project funding, approval, and timing is limited. That position defines the case: the scope is a very small fraction of any single project's budget, which makes it easy to award and easy to move.
| Market Cap | — |
| Revenue (TTM) | $27M |
| Revenue Growth | +8.3% |
| EBITDA Margin (TTM) | -12.8% |
| Net Cash | $19M |
| Earnings Beats | 1 of 5 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- APC backlog ran from $7.0M at December 31, 2025 to $14.3M at June 30, 2026 — the largest quarter-end backlog management says it has reported since 2018.
- Approximately $10.5M of that backlog is expected to be recognized within twelve months, up from roughly $6M of $6.9M a quarter earlier.
- The anchor award was a ~$10M package won in an open public tender; the SCR is for a GE Vernova turbine model management says is commonly deployed for data-center opportunities.
- Balance sheet: stockholders' equity was $37.4M at June 30, 2026. Management says it expects to fund its capital expenditures with cash from operations or cash on hand.
- The EPA's New Source Performance Standards, published January 15, 2026, set 5 ppm NOx for turbines above 85 megawatts — a threshold management says will require SCR in almost all cases.
What We’re Watching
- The data-center conversion has slipped twice: one of two highlighted opportunities did not continue and the timing of the second was delayed. Management now frames a possible award before the end of Q3 2026.
- Gross margin has compressed year over year in each of the last two reported quarters — 43% vs 46% in Q1 2026 and 41% vs 46% in Q2 2026. APC segment margin swung from a roughly 600 basis point year-over-year gain in Q1 to an 800 basis point decline in Q2.
- FUEL CHEM — about 65% of H1 2026 revenue on disclosed quarters — depends on magnesium hydroxide supplied 100% by Martin Marietta Magnesia Specialties for US and Canada customers.
- Scale: FTEK's effective APC backlog of about $17M sits against CECO Environmental's $1.82B backlog and Babcock & Wilcox's pipeline of more than $14B, including 4 to 6 gigawatts of power generation opportunities; both are named as competitors in the 10-K.
The thesis has improved on visibility and not on earnings. Backlog, the regulatory demand driver, and the balance sheet are all clearer or stronger than a year ago; margins, losses, and the timing of the AI-linked catalyst all moved the wrong way, and three forward-dated commitments each slid about a quarter between the two 2026 calls. Management reaffirmed FY2026 revenue above 2025 and raised the low end of SG&A guidance, so nothing was withdrawn. The open question is whether a data-center award — or the earlier capacity reservation agreement under discussion — prints before the promised window closes.
Earnings
Q2 2026 consolidated revenue rose 17% to $6.5M from $5.6M, with both segments growing: APC to $2.8M (+11%) and FUEL CHEM to $3.7M (+21%, on increased operational dispatch at legacy accounts). Consolidated gross margin fell to 41% from 46% on lower segment margins in both businesses. The operating loss widened to $1.6M from $1.3M, the net loss to $1.2M from $689,000, and the adjusted EBITDA loss to $1.2M from $948,000. Consolidated APC backlog reached $14.3M at June 30, 2026, which management says was the largest quarter-end backlog reported since 2018.
| Metric | Q2 FY2026 | Q1 FY2026 | Q2 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $6M | $6M | $6M | +16.1% |
| Gross margin | 41.2% | 43.5% | 45.5% | -430bps |
| EBITDA | −$1M | −$1M | −$1M | +0.0% |
| EPS | $-0.04 | $-0.05 | $-0.02 | +69.8% |
| APC backlog | $14.3M | $6.9M | n/a | — |
| Backlog expected within 12 months | ~$10.5M | ~$6.0M | n/a | — |
…which was the largest quarter-end backlog that we had reported since 2018.— Vince Arnone, President & CEO, 2026-08-05
Management tone: On the Q2 2026 call management volunteered the bad news rather than burying it — one data-center opportunity lost, the second delayed — and then repeatedly capped its own good news, noting that most of the anchor contract's revenue lands in 2027. Three forward-dated commitments each moved roughly one quarter to the right between the two calls, and the low end of SG&A guidance was raised. Management gave precise sizing where it did not bind, such as the FUEL CHEM conversion and the DGI proposal, and declined to quantify the coal life-extension retrofit opportunity. It likewise reframed prior-call shareholder pressure over slow growth, saying 'the public bid starts the sales process. It is just the beginning.'
Management Guidance
Management guides FY2026 revenue to exceed the level of 2025, with FUEL CHEM approximating 2025 revenues and APC exceeding 2025 performance. That APC outlook explicitly excludes data-center awards, which management says would be additive. SG&A guidance was raised at the low end to $14.5M–$15M from $14M–$15M. Management also said the June 30 backlog conversion is expected within twelve months, 'barring no customer-driven delay,' and expects strong FUEL CHEM performance in Q3. The second coal-fired FUEL CHEM demonstration is described as too early to include in 2027.
Trajectory
Revenue turned back up in Q2 2026, rising 17% year over year to $6.5M, after a 5% decline in Q1. Both segments grew in Q2 — APC by 11% and FUEL CHEM by 21%. Mix is rotating toward APC, the segment that would carry any data-center award: APC was 26% of Q1 revenue and 43% of Q2. Gross margin has compressed across the last three reported comparative quarters and management attributes the swing to project mix, contract timing, and project execution costs rather than to a trend. The operating loss was $1.6M in both 2026 quarters, and the corporate cost base of SG&A plus R&D — roughly $4.2M per quarter — is what keeps the company below breakeven.
The Model
The model projects FY+1 revenue of $27.5M with EBITDA of -$4M, a -15.55% margin. For FY+2 it projects revenue of $35.75M with EBITDA of -$1M, a -3.65% margin. The near-term anchor is the signed backlog expected to be recognized within twelve months, plus management's guidance that FY2026 revenue exceeds 2025. The FY+2 step-up depends on conversion events that have not closed: a data-center award with early-to-mid-2027 delivery timeframes, a FUEL CHEM demonstration account conversion, and a first commercial DGI contract.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $27M | $28M | $36M |
| YoY Growth | — | +3.0% | +30.0% |
| EBITDA | −$3M | −$4M | −$1M |
| EBITDA Margin | -10.9% | -15.6% | -3.7% |
Projections are the median of 4 independent model runs.
Management guides FY2026 revenue to exceed the level of 2025, with FUEL CHEM approximating 2025 revenues and APC exceeding 2025 performance. That APC outlook explicitly excludes data-center awards, which management says would be additive. SG&A guidance was raised at the low end to $14.5M–$15M from $14M–$15M. Management also said the June 30 backlog conversion is expected within twelve months, 'barring no customer-driven delay,' and expects strong FUEL CHEM performance in Q3. The second coal-fired FUEL CHEM demonstration is described as too early to include in 2027.
What Could Go Right — and Wrong
- A data-center inquiry converts to a commercial award, or the capacity reservation and long lead time procurement agreement under discussion is signed, putting a first AI-linked revenue line on the books.
- The live data-center opportunity delivers in early to mid-2027 — management's own window for 'material revenues in 2027, pending contract award.'
- The FUEL CHEM demonstration account converts to a commercial program, adding approximately $2.5M–$3M of annualized revenue at historic FUEL CHEM gross margins in 2027.
- A first commercial DGI system is awarded — sized $500,000 to $1M for the full hatchery — with revenue recognized in 2027 over a 5- to 6-month build.
- The near-term APC pipeline closes on schedule on top of the $2.6M and $2.8M awards already announced.
- The data-center pipeline slips again or shrinks further: the opportunity count already went from '8 to 10 different data center projects' to 'several,' and the $75M–$100M figure did not move between the two calls.
- Gross margin stays compressed or falls further. FUEL CHEM margin declined two quarters running, the second time on rising revenue, on demonstration costs, freight, and unit-maintenance labor.
- Cash keeps drawing down — $31.9M to $30.6M to $29.6M over two quarters — while DGI research and development spend continues and SG&A guidance was raised.
- Larger competitors lock up the same demand first. CECO says power generation is roughly half of its record $1.82B backlog, and Babcock & Wilcox carries a pipeline of more than $14B that includes 4 to 6 gigawatts of power generation opportunities.
- The NSPS rule is delayed or changed by the legal challenges management flags, or projects increasingly fit the under-85-megawatt temporary category that may not require SCR.
Looking Ahead
The next twelve months are about conversion, not construction. Management has put a date on the first test — a data-center inquiry converting before the end of Q3 2026 — and a window on the revenue it would produce, early to mid-2027. In parallel, the June 30 backlog conversion is expected within twelve months, the FUEL CHEM demonstration restarts in mid-Q4 2026 with any commercial benefit pointing to 2027, and a full-hatchery DGI proposal is in process. Ramesh Nuggihalli became President & CEO on August 10, 2026, and Sharon L. Jones succeeded Vince Arnone as Chair of the Board effective September 15, 2026.
- September 2026Board chair transition — Sharon L. Jones elected Chair of the Board effective September 15, 2026, succeeding Vince Arnone (PR 2026-09-08).
- End of Q3 2026Data-center award decision — One inquiry could convert to a commercial award before quarter-end.
- Q3/Q4 2026Near-term APC closures — $3M–$5M of the $8M–$10M APC pipeline, excluding data centers.
- Mid-Q4 2026FUEL CHEM demo restart — The demonstration program restarts mid-Q4 2026; any conversion benefit points to 2027.
- 2027FUEL CHEM conversion benefit — Annualized benefit if the demonstration account converts.
- Early to mid-2027Data-center delivery window — Delivery timeframes for the live opportunity, pending contract award.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $25M | $27M | $27M | +6.0% |
| Gross Margin | 42.1% | 46.4% | 44.7% | +423bps |
| EBITDA | −$4M | −$3M | −$4M | +31.0% |
| EBITDA Margin | -16.7% | -10.9% | -12.8% | +581bps |
| Net Income | −$2M | −$2M | −$4M | -21.1% |
| Free Cash Flow | −$4M | $2M | −$1M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)44.7%
- EBITDA Margin (TTM)-12.8%
- Net Margin (TTM)-12.8%
- ROIC-19.9%
- SBC / Revenue1.1%
The Company
Fuel Tech makes equipment and chemicals that reduce pollution from stationary combustion. Its Air Pollution Control segment sells selective catalytic reduction and selective non-catalytic reduction systems that cut nitrogen oxides from the flue gas of natural gas, coal, or biomass combustion — the same exhaust profile produced by the gas turbines and reciprocating engines that data centers increasingly run on site. Its FUEL CHEM segment injects specialty chemicals into coal-fired boilers and furnaces to control slagging, fouling, corrosion, and sulfur trioxide-related issues. A third product line, Dissolved Gas Infusion, sells water-treatment systems. The company's own framing of its AI role is narrow: it is a subcontractor to data-center integrators and to turbine or engine OEMs, and it states that the pollution-control scope of supply is a very small fraction of estimated total AI infrastructure spend.
Operations are asset-light. The company owns its Warrenville, Illinois headquarters, leases an approximately 1,335 square foot European operations office in Gallarate, Italy through April 2031, and leases an approximately 11,000 square foot outside warehouse in Aurora, Illinois through March 2031. No manufacturing plant or owned production capacity appears anywhere in the source material, and the company reports no unit volumes — no megawatts, systems, or units shipped. Customer concentration is disclosed and material: the five largest customers accounted for approximately 58% of FY2025 net revenues and the largest customer approximately 21%, with identities undisclosed.
Business Segments
Competitive Landscape
Fuel Tech competes product line by product line, and the FY2025 10-K names companies that are substantially larger across each one. FTEK won its anchor award in an open public tender against 'quite a few other companies,' which is a capability data point. The source material's supply-chain read-through describes FTEK as a price-taker and project-taker in a market where larger competitors are already locking up capacity — CECO says power-generation projects are about half its record $1.82B backlog, and Babcock & Wilcox expects a second data-center project to reach full notice to proceed this year while FTEK's pipeline remains prospective.
- Named in the 10-K as a competitor in SCR systems and reagent feed and in ammonia-based SNCR. The supply-chain read-through in the source material cites its record $799M quarterly orders, $1.82B backlog, and a debooking rate below 0.5% — roughly two orders of magnitude larger than FTEK's APC backlog.
- Babcock & WilcoxNamed in the 10-K in SCR systems and reagent feed, ammonia-based SNCR, and electrostatic precipitator retrofit. The supply-chain read-through cites a total pipeline over $14B including 4 to 6 gigawatts of power generation opportunities, and an expectation that a second data-center project moves to full notice to proceed this year.
- Babcock PowerNamed in the 10-K as a competitor in SCR systems and reagent feed; not discussed further.
- MitsubishiNamed in the 10-K as a competitor in SCR systems and reagent feed; not discussed further.
- YaraNamed in the 10-K as a competitor in ammonia-based SNCR; not discussed further.
Supply Chain
Fuel Tech buys chemicals and long-lead components, integrates them into pollution-control systems, and sells the finished scope to utilities and industrial operators as a subcontractor. No turbine maker or data-center company in the source material mentions Fuel Tech by name.
More on FTEK: Earnings recap