ERock (EROC) Q3 2026 earnings review
ERock quadruples quarterly sales and turns a profit
ERock, a maker of natural-gas generator systems for data centers and utilities, ramped up its new Houston factory and turned profitable while keeping its full-year targets in place. Third-quarter revenue nearly quadrupled from the second quarter to $153 million, lifting net income to $9 million as factory volume outran overhead costs. Chief executive John Carrington kept the full-year outlook unchanged, which by our math leaves about $226 million of sales for the fourth quarter.
| Revenue | $152.8M nearly 4x from last quarter (+311% from a year ago) |
|---|---|
| Adjusted EBITDA (operating cash profit) | $12.6M -$14.0M last quarter (8.2% margin) |
| Contracted system sales backlog | ~$1.6B +$300M of new orders added after quarter end |
| Full-year 2026 outlook | Unchanged middle of the range: $450M revenue, $6M Adjusted EBITDA |
⚖️ Verdict: 🟢 Bullish
The story got better because the company proved its new Hyperion factory can ship at scale and generate positive operating cash profit. In addition, more than $300 million of orders booked after September 30 pushed the backlog to a new record and led management to plan a second Houston plant for 2028. One caution: hitting the full-year plan still requires fourth-quarter shipments to climb another 48% by our math, and recurring service revenue barely moved because new sites have not turned on yet.
The question now is whether data-center demand for onsite gas power lasts beyond the current wave of grid delays, or fades once utilities build more transmission lines. If grid bottlenecks persist and customers sign maintenance deals, the new 2028 factory will fill up and lift service revenue; if the orders come from just a few buyers solving a temporary crunch, growth will slow after 2027. Customer concentration details in the upcoming quarterly filing and fourth-quarter deliveries will provide the next test.
🐂 Bull Case
Factory Ramp Lifted Quarterly Sales Nearly Fourfold
ERock builds and operates natural-gas generator systems that supply onsite electricity to data centers, utilities and industrial sites. After opening its Hyperion assembly plant in Houston last quarter, the company needed a major jump in shipments to meet its full-year targets. Chief executive John Carrington said the team delivered "record production and deliveries that drove record quarterly revenue and profitability".
Total sales reached $152.8 million, nearly four times the $39.9 million recorded in the second quarter and more than four times last year's $37.2 million. Equipment sales did the heavy lifting, climbing from $16.2 million in the prior quarter to $109.2 million "due to increased generator production and installation activity". That shipment pace eases the immediate worry that the new Houston plant would struggle to scale up.
What to watch: fourth-quarter power system product revenue. By our math, the full-year outlook calls for total revenue of about $225.6 million next quarter, which requires the Houston plant to increase quarterly shipments by another 48%.
Higher Factory Volume Turned Operating Profit Positive
A standing concern from last quarter was whether thin product margins and heavy overhead would keep ERock in the red even as sales grew. Finance chief Ian Blakely said the third quarter "marked an inflection point" that produced "our first profitable quarter as a public company". Because factory output jumped while office costs stayed steady, revenue finally outran the fixed cost base.
- Cost of making and running systems (excluding depreciation): 75.9% of revenue, down 12.8 percentage points from a year ago
- Gross margin: 22.9%, up 13.9 percentage points from 9.0% a year ago
- Administrative and overhead costs: $28.0 million, falling from 68.4% of sales last quarter to 18.4%
- Adjusted EBITDA (operating cash profit before one-offs): $12.6 million, or 8.2% of sales, up from a $14.0 million loss last quarter
What to watch: Adjusted Gross Margin, which strips out zero-markup pass-through costs and stood at 24.1% this quarter. Holding that level in the fourth quarter would show that large data-center equipment deliveries do not dilute unit profitability.
New Orders After Quarter End Topped $300 Million
Data-center operators and utilities use ERock's generators to get power years before grid connections are ready. Contracted Power System Sales Backlog — signed equipment and installation orders not yet recognized as sales — dipped from about $1.7 billion in June to about $1.6 billion in September as the company delivered $136.3 million of systems. That small dip raised the question of whether order intake was slowing.
Orders picked right back up after the quarter closed. Carrington said the power provider booked more than $300 million of new system sales after September 30, pushing backlog past $1.7 billion to a new record and "providing revenue and margin visibility into 2028". Construction also began on schedule at the 366-megawatt El Paso Electric plant "supporting Meta's data center campus", keeping its mid-2027 completion target intact.
What to watch: year-end contracted backlog in the fourth-quarter report. By our math, converting around $210 million of equipment sales in the fourth quarter while adding the $300 million of post-quarter orders should leave year-end backlog near $1.7 billion or higher.
🐻 Bear Case
Fourth-Quarter Target Still Demands Another Big Step Up
Management kept its full-year outlook unchanged at $435 million to $465 million in revenue and $3 million to $9 million in Adjusted EBITDA. With $224.4 million of revenue and a $14.3 million Adjusted EBITDA loss booked through the first nine months, the fourth quarter still carries almost half of the entire year's sales target and all of its operating cash profit.
By our math, hitting the middle of the full-year range requires $225.6 million of fourth-quarter revenue — a 48% jump from the third quarter's record level — and $20.3 million of Adjusted EBITDA. One quarter of fast factory growth lowers the execution risk, but the rule of judgment holds: the company must still prove its supply chain and customer project sites can handle an even bigger wave of deliveries before December 31.
What to watch: fourth-quarter revenue against the implied $210.6 million to $240.6 million band. A shortfall would show that customer site delays or assembly bottlenecks capped the year-end ramp.
Service Revenue Lags Until New Sites Turn On
Carrington highlighted "revenue and margin visibility into 2028" from new equipment orders, and ERock pitches its model as a combination of upfront system sales and long-term maintenance contracts. Yet the third quarter showed a wide gap between building generators and commissioning them. While product sales rose nearly sevenfold from a year ago, the company's Installed Base — total megawatts of active systems under service contracts — did not grow at all from the second quarter, staying at 1,104 megawatts.
Because no net new megawatts entered service during the quarter, Annualized Recurring Service Revenue rose just 4.8% from June to $24.7 million. In addition, the Adjusted EBITDA table reveals a $3.0 million one-off "loss associated with purchase of excess generation assets" that the release never explains. Until large projects like the 366-megawatt El Paso site turn on in mid-2027, ERock relies almost entirely on lumpy equipment manufacturing.
What to watch: whether ERock signs an installation and maintenance contract for its 470-megawatt Anthropic equipment order. Without service agreements on large data-center wins, recurring revenue will stay a small fraction of the business.
Risks this quarter didn't answer
Four standing concerns from the second quarter received no new disclosure in the earnings release and remain open until the quarterly filing arrives.
- Customer concentration: one buyer accounted for 62% of receivables in June and an unnamed Customer A drove much of the backlog; the release does not say how many customers made up the $300 million of new orders.
- Post-2028 data-center demand: orders now reach into 2028, but whether artificial-intelligence data centers keep ordering onsite gas power once utilities upgrade the grid remains untested.
- Texas and California rules: potential changes to grid connection rules and local air-permit limits received only standard risk-factor language.
- Dual-class share structure: pre-IPO owners hold 171.2 million Class B shares and took $7.1 million of the quarter's $8.9 million profit, leaving $1.8 million for public Class A shareholders.
👓 Other Themes
New Houston Factory Plan Aims to Nearly Double Capacity
ERock announced a second manufacturing expansion in Houston, called the Atlas facility, alongside an engine supply contract with HD Construction "enabling expanded volumes for customers in 2028". Atlas will add 900 megawatts of annual production capacity, lifting total run-rate capacity from the 1.2 gigawatts planned at Hyperion to 2.1 gigawatts a year in 2028. The release did not state the capital cost or construction timeline for Atlas.
💲 Other KPIs
Customer deposits (current contract liabilities — cash paid upfront before equipment is delivered) edged down 7.2% from $528.4 million in June as ERock shipped orders, but are stillnearly triple the $170.0 million held at year-end. At the same time, the company increased inventory by 39.2% from June to $147.6 million to stock parts for fourth-quarter deliveries.
By our math from the nine-month cash flow statement, operating cash flow turned negative at -$20.8 million in the third quarter after bringing in $268.9 million in the first half, because ERock spent cash on inventory and worked down deposits. Capital spending accelerated to $20.8 million, leaving -$41.5 million in free cash flow and $548.7 million in unrestricted cash with zero debt.
Annualized Recurring Service Revenue — the yearly run rate of long-term maintenance and monitoring contracts — grew 17.1% from a year ago and 4.8% from the second quarter. Because the active installed base stayed flat at 1,104 megawatts, revenue per installed megawatt rose by our math from $21.4 thousand to $22.4 thousand.
🔮 Guidance
Unchanged. The plan still calls for full-year sales to grow about 2.5 times from last year to $450 million at the middle of the range. By our math, subtracting $224.4 million of nine-month sales leaves $210.6 million to $240.6 million for the fourth quarter, or $225.6 million at the middle — up 47.7% from the third quarter's record $152.8 million.
Unchanged. The full-year target remains $6 million at the middle of the range. Because ERock posted a $14.3 million Adjusted EBITDA loss across the first nine months, the outlook requires $17.3 million to $23.3 million of Adjusted EBITDA in the fourth quarter by our math, or $20.3 million at the middle (a 9.0% margin on implied fourth-quarter sales, up from 8.2% in Q3).
❓ Key Questions
What will the new Atlas factory cost to build?
ERock announced the 900-megawatt Atlas plant in Houston to reach 2.1 gigawatts of annual capacity in 2028, and third-quarter capital spending jumped to $20.8 million by our math. Management did not disclose the total budget or timeline for Atlas.
What caused the $3 million excess generation asset loss?
The Adjusted EBITDA table adds back a $3.0 million "loss associated with purchase of excess generation assets" in the third quarter. The release gives no detail on what equipment was bought, why it took a loss, or whether more charges will follow.
How many customers drove the $300 million of bookings?
One customer accounted for 62% of receivables in the second quarter, and an unnamed Customer A held a large share of the backlog. Investors need to know whether the post-quarter orders broaden the customer base or deepen that concentration.
Have installation and service deals been signed with Anthropic?
Last quarter's 470-megawatt Anthropic win covered equipment only, with installation and maintenance contracts expected later. The release did not say whether those higher-margin service agreements were part of the new bookings.