enCore Energy’s Production Surge Has Hit a Regulatory Ceiling
Key Takeaways
- enCore Energy production reached 699,807 pounds of U3O8 in 2025, a 242% year-over-year increase, but the June 2026 quarter delivered only 45,000 pounds on a 100% basis, confirming the initial ramp has peaked at its permitted ceiling.
- Alta Mesa is physically configured for up to 1 million pounds per year and scalable to 1.5 million pounds, yet operates at roughly 60% of capacity solely because TCEQ Production Area Authorisations for Wellfield 3 and Wellfield 8 remain under review.
- The three pending TCEQ decisions, PAA3, PAA8, and the Upper Spring Creek PAA, are more informative leading indicators for the 2027 target of approximately 850,000 pounds than any quarterly output number, which will lag permit decisions by at least one operating quarter.
- Alta Mesa East drilling has returned mineralisation more than 3,700 feet east of the nearest operating wellfield across 32 holes, signalling geographic scale for a future resource extension, though formal definition is at least a year away.
- Approximately 62% of enCore's extraction is uncontracted, meaning the company's upside is materially leveraged to spot uranium prices at the exact moment new production areas receive their permits, a deliberate but explicit bet on higher future prices.
enCore Energy extracted roughly 700,000 pounds of U3O8 from its South Texas operations in 2025, a 242% jump over the prior year. The headline sounds like a company hitting its stride.
But the more revealing number is this: by mid-2025, Alta Mesa was running at roughly 60% of its configured capacity, held there not by any operational shortfall but by regulators who have yet to unlock the next growth phase.
For anyone tracking US in-situ recovery (ISR) uranium producers, that gap between what enCore can physically produce and what it is permitted to produce is the whole story right now. The infrastructure exists at Wellfield 3, Wellfield 8, and the Upper Spring Creek satellite. Each waits on Texas Commission on Environmental Quality (TCEQ) authorisations still moving through review as of mid-2026.
Meanwhile, drilling at the 5,900-acre Alta Mesa East property is beginning to sketch what a longer resource runway might look like beyond the current wellfield sequence.
This analysis lays out where enCore Energy production actually stands, which regulatory gates must clear before output climbs, what the Alta Mesa East results signal about resource depth, and how realistic the 2027 run-rate target looks from the evidence available today.
From restart to ramp: what enCore’s 2025 and 2026 output numbers actually reveal
The temptation with enCore is to read the 2025 figure as a trajectory. It is safer to read it as a single, impressive data point that has since flattened.
Start with the baseline. In 2024, Alta Mesa produced 190,000 pounds of U3O8 and Rosita added 73,488 pounds. The following year, Alta Mesa alone delivered 699,000 pounds while Rosita fell away to 5,728 pounds as its initial wellfields exhausted. That is the source of the widely cited 242% year-over-year increase, and it is genuine.
| Year | Alta Mesa (lbs) | Rosita (lbs) | Total Hub (lbs) | Notes |
|---|---|---|---|---|
| 2024 | 190,000 | 73,488 | ~263,488 | Pre-ramp baseline |
| 2025 | 699,000 | 5,728 | 699,807 | 242% YoY increase (10-K) |
| 2026 (full year) | 491,000 | n/a | n/a | 100% basis; Boss JV share 161,000 |
| Jun 2026 quarter | 45,000 | n/a | n/a | 100% basis; Boss share 13,000 |
Then the 2026 picture arrives, and it complicates the momentum reading. Boss Energy’s FY2026 earnings call reported Alta Mesa producing 491,000 pounds for the full year on a 100% basis, with Boss’s 30% share at 161,000 pounds.
The quarterly detail is where the caution lives. The June 2026 quarter produced just 45,000 pounds on a 100% basis, of which Boss’s share was 13,000 pounds.
enCore’s 2025 output rose 242% year-over-year to 699,807 pounds. But at only 45,000 pounds in the June 2026 quarter, the initial ramp has clearly peaked, and the next growth leg depends on permits, not performance.
By June 2025, daily production at Alta Mesa had reached 2,678 pounds, against configured capacity of roughly 1 million pounds per year that is scalable to 1.5 million pounds once all ion-exchange circuits come online.
Here is what that tells you. The deceleration into mid-2026 is not an operational failure at existing permits; it is the sound of a ramp running into its permitted ceiling. If you are pricing enCore on continued momentum, the quarterly data does not yet support the assumption. The next leg is a regulatory question.
When big ASX news breaks, our subscribers know first
What ISR permitting in Texas actually requires, and where enCore’s expansion permits stand
To understand why enCore is stuck at 60% of capacity, you need to understand who holds the keys. In Texas, it is not the federal government.
Texas is an NRC Agreement State, a designation dating to the 1970s when the Nuclear Regulatory Commission (NRC) delegated authority over source and byproduct materials to states rather than manage an anticipated wave of applications itself. In practice, that means uranium recovery is governed by the TCEQ through its Radioactive Materials Division, not by the NRC directly.
An ISR operator in Texas generally needs three separate authorisations before uranium flows:
- Class III Underground Injection Control (UIC) Area Permit: governs the actual in-situ injection and mining activity.
- Production Area Authorization (PAA): authorises production from a specific defined area within the permitted site.
- Radioactive Material License (RML): covers the handling and processing of the recovered uranium.
The PAA is the operative bottleneck. A company can build a wellfield, connect the pipeline, and stand ready to inject, but without the PAA for that specific area, the uranium stays in the ground.
Analysts at Foley & Lardner noted in a February 2026 analysis that the Texas pathway, while locally attuned and potentially faster than direct NRC oversight, still requires operators to secure EPA aquifer exemptions and comply with Class I waste-disposal well rules on top of the TCEQ permits themselves.
Where each wellfield and satellite sits in the permitting sequence
At Alta Mesa, the expansion is physically ready and regulatorily stalled.
Wellfield 3 is constructed with a direct pipeline connection to the plant and minimal remaining capital expenditure. It awaits PAA3.
Wellfield 8 construction is substantially advanced. It awaits PAA8. Boss Energy’s July 2026 earnings call confirmed that both PAA3 and PAA8 have been delayed, deferring their start and leaving the legacy PAA7 wellfield to decline as its original resource depletes. That decline is precisely what shows up in the thin June 2026 quarterly figure.
The Upper Spring Creek satellite, which feeds the Rosita plant, has moved further through the queue but is not clear yet. Its regulatory sequence runs as follows:
- May 2025: TCEQ approved inclusion of the Upper Spring Creek Brown Area into Rosita’s existing RML.
- May 2025: TCEQ issued a partial Class III UIC Area Permit.
- Pending: the full PAA remains under active TCEQ review as of Q1 and June 2026.
- Pending: a Class I waste-disposal well permit also remains under review.
First-phase construction at Upper Spring Creek is complete at 1,600 gpm, half of its planned 3,200 gpm capacity.
For investors, these delays are the direct mechanism capping output below configured capacity. The useful precedent sits with a peer: UEC’s Burke Hollow satellite took several years to move from permitting to its initial production start-up in April 2026. Multi-year timelines are the Texas ISR norm, not a company-specific stumble. That means the PAA decisions, not the quarterly output reports, are the leading indicators worth watching.
Alta Mesa East drilling results and what they tell you about the resource runway
If the wellfield permits define enCore’s next two years, Alta Mesa East defines the decade after. The results so far are encouraging, but they are early enough that calibrating your optimism matters as much as the grades themselves.
enCore launched drilling at the 5,900-acre property in mid-October 2025, targeting the B, Middle C, and Lower C sands of the Goliad Formation at depths of roughly 320-520 feet, adjacent to operating wellfields.
The grade-thickness (GT) numbers are the signal. GT is a combined measure of ore grade and thickness; enCore uses a 0.3 GT economic threshold, above which mineralisation is considered potentially economic.
| Batch | Holes Drilled | Holes Mineralised | GT Range | Highlight Hole |
|---|---|---|---|---|
| Batch 1 | 17 | 10 | 0.351 to 2.297 | n/a |
| Batch 2 | 20 | 12 | 0.43 to 1.76 | 12-20: 8.5 ft at 0.199% U3O8, 487 ft depth (GT 1.69) |
Both batches show more than half the holes mineralised above the economic threshold, with several results comfortably above it. That is a healthy hit rate for an early programme.
The most spatially meaningful result is not a grade at all. It is a distance.
June 2026 releases confirmed uranium mineralisation extending more than 3,700 feet east of the nearest operating wellfield, the strongest indication yet that Alta Mesa East has the geographic scale to add real resource tonnes to a future mine plan.
One data note for investors. The company’s own webpage, updated 22 July 2026, reported 32 drill holes totalling roughly 11,000 feet completed at Alta Mesa East. Where other figures circulate, treat the 32-hole number as the authoritative current count.
Across the broader South Texas portfolio, enCore’s S-K 1300 resource statement reports 30.94 million pounds of U3O8 in the Measured and Indicated categories and 20.54 million pounds Inferred.
What this tells you is measured. The 3,700-foot extension signals real scale, but a 32-hole programme is far too early for formal resource definition. Drilling is expected to run through 2026-2027. This is a 2027 watch item, not a near-term production catalyst.
The Boss Energy JV, contract exposure, and the financial architecture behind the ramp
The financing and contracting choices behind enCore’s ramp are not accidents. They are deliberate bets, and understanding them tells you what management is actually wagering on.
The Boss Energy joint venture, which closed in February 2025, set the foundation. Its structure rests on three terms:
- Ownership split: Boss Energy paid US$60 million for a 30% interest in Alta Mesa; enCore retains 70%.
- Operatorship: enCore keeps operatorship and pro-rata uranium distribution.
- Royalty conversion: a mechanism exists to convert a sub-10% interest into a 1% production royalty.
That deal gave enCore operational credibility, financing, and offtake, and it directly enabled the 2025 production acceleration. It is the reason the ramp happened when it did.
The contracting posture is the more aggressive bet. Roughly 62% of extraction is uncontracted, meaning most of enCore’s uranium is not locked into fixed-price supply agreements. The company is deliberately holding spot-price leverage at the cost of predictable cash flow.
Whether that pays off depends entirely on where uranium spot prices sit when PAA3, PAA8, and Upper Spring Creek come online. The 62% figure is a wager that prices will be materially higher by then. If you hold enCore, you hold that thesis too, whether you have named it or not.
There is precedent for what the asset can deliver at scale.
Under predecessor operator Energy Fuels, the Alta Mesa project produced approximately 4.6 million pounds of U3O8 between 2005 and 2013, a demonstrated benchmark for the asset’s capability well beyond its current output.
Sell-side sentiment reflects the tension. MarketBeat data showed a consensus “Hold” rating with an average price target of US$3.62. The 2025 Form 10-K references approximately 850,000 pounds for a 2027 ramp scenario.
The JV structure and contracting posture together define the risk-return shape here. The upside is amplified by spot exposure. The near-term cash flow depends on permitting timelines that have already slipped once and remain contingent on TCEQ’s pace.
The next major ASX story will hit our subscribers first
Reading the 2027 production target against the permitting calendar
The forward question comes down to arithmetic and sequencing. enCore’s 2025 Form 10-K references approximately 850,000 pounds for 2027, part of a growth path toward a roughly 1 million pound per year run-rate for the Texas hub, with Alta Mesa scalable to 1.5 million pounds once all ion-exchange circuits are online.
Reaching that figure is not a matter of production effort. It is a matter of four permits arriving in order:
- PAA3 issued: unlocks Wellfield 3 at Alta Mesa.
- PAA8 issued: unlocks Wellfield 8 at Alta Mesa.
- Upper Spring Creek PAA issued: enables production feeding Rosita.
- Upper Spring Creek Class I waste-disposal well permit issued: completes the regulatory requirement for that satellite.
Upper Spring Creek currently processes 1,600 gpm against a planned 3,200 gpm, so even a PAA leaves further build-out ahead.
What comparable Texas ISR timelines suggest about execution risk
The peer data is sobering without being damning. UEC’s Burke Hollow satellite IX plant, with 2,500 gpm capacity supplied initially by 129 wells, took several years to advance from permitting through mechanical completion to its production start-up in April 2026.
The Texas Agreement State system is locally attuned and can move faster than direct NRC oversight. But it still layers EPA aquifer exemptions and Class I well compliance on top of the TCEQ permits. Multi-year sequential timelines are the baseline here, not an enCore anomaly.
enCore has already absorbed one permitting delay of several months, and Boss Energy’s July 2026 call confirmed the PAA3 and PAA8 deferrals.
Here is how to read the 2027 target. If PAA3, PAA8, and the Upper Spring Creek PAA all clear in late 2026, the 850,000-pound figure is plausible. If any one of the three slips into 2027, the target shifts right, and the June 2026 quarterly deceleration becomes the dominant near-term narrative.
For that reason, the three pending TCEQ decisions are more informative leading indicators than any quarterly output number, which will lag the permit decisions by at least one operating quarter.
This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.
Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors. Forward-looking statements regarding production targets and permit timelines are speculative and subject to change based on regulatory developments and company performance.
What the evidence supports and where the decision points sit in the next 12 months
Strip the story to its core and the analytical through-line is clear. enCore has already proven it can produce uranium at scale, delivering 699,807 pounds in 2025 for a 242% year-over-year increase. That question is settled.
What is not settled is timing. The company now sits at roughly 60% of configured capacity, held there by TCEQ’s review pace rather than by any operational choice of its own. This is a holding pattern, not a plateau.
Three variables will determine whether the 2027 trajectory holds:
- PAA3 and PAA8 timing: these unlock the constructed Alta Mesa wellfields and reverse the PAA7-driven decline visible in mid-2026.
- Upper Spring Creek PAA and Class I permit timing: these enable the Rosita feed and the path toward full 3,200 gpm capacity.
- Alta Mesa East drilling pace: the signal of medium-term resource depth beyond the current wellfield sequence.
The valuation tension remains unresolved. Analyst consensus sits at “Hold” with a US$3.62 average target, and the roughly 62% uncontracted position means the upside is materially leveraged to spot uranium prices at the exact moment new production areas receive their permits.
For commercial investors weighing enCore against other US ISR names, the next 12 months offer three concrete, externally verifiable milestones. Those TCEQ decisions will resolve the central uncertainty in this thesis more definitively than any single production quarter can.
—
Frequently Asked Questions
What is in-situ recovery (ISR) uranium mining and how does enCore Energy use it?
In-situ recovery (ISR) mining dissolves uranium from underground ore bodies using injected solution, then pumps the uranium-bearing liquid to surface for processing, without excavating rock. enCore Energy uses ISR at its Alta Mesa and Rosita facilities in South Texas, regulated by the TCEQ rather than the federal NRC because Texas is an NRC Agreement State.
Why has enCore Energy's production slowed in mid-2026 after a strong 2025?
Alta Mesa is running at roughly 60% of configured capacity because Production Area Authorisations (PAAs) for Wellfield 3 and Wellfield 8 remain under TCEQ review, not because of any operational failure. The June 2026 quarter produced only 45,000 pounds on a 100% basis, reflecting the decline of the existing PAA7 wellfield while expansion permits remain pending.
What permits does enCore Energy need before output can grow beyond current levels?
enCore needs four key authorisations: PAA3 for Wellfield 3, PAA8 for Wellfield 8, a Production Area Authorisation for Upper Spring Creek, and a Class I waste-disposal well permit for Upper Spring Creek. All four remain under active TCEQ review as of mid-2026, and their timing will determine whether the 2027 production target of approximately 850,000 pounds is achievable.
What has the Alta Mesa East drilling programme revealed so far?
Across two batches totalling 37 drill holes, more than half returned grade-thickness results above enCore's 0.3 GT economic threshold, with mineralisation confirmed extending more than 3,700 feet east of the nearest operating wellfield. The programme is early at 32 holes completed as of July 2026, so formal resource definition is a 2027 watch item rather than a near-term production catalyst.
What is the Boss Energy joint venture structure at Alta Mesa and what does it mean for enCore's production exposure?
Boss Energy paid US$60 million for a 30% interest in Alta Mesa in February 2025, with enCore retaining 70% and operatorship. This means reported Alta Mesa production figures on a 100% basis must be scaled to enCore's 70% share, and the JV structure provided the financing that directly enabled the 2025 production ramp.

