Will dry natural gas production from the Marcellus formation for 2026 be above 10.00 Tcf?

- [2026-10-06] EIA's October 2026 STEO was released on this date. The next release is 2026-11-10, which is the only scheduled STEO update before the market closes. https://www.eia.gov/outlooks/steo/data/browser/ - [2026-10-06/08] The October STEO puts U.S. marketed gas production for 2026 at 123.528 Bcf/d (+0.46% vs September). That implies 4.3% growth over 2025. Secondary summary, not EIA's own table. https://www.advisorperspectives.com/dshort/updates/2026/10/08/short-term-energy-outlook-october-2026 - [2026-10-01] The September STEO put 2026 U.S. dry gas production at about 111.7 Bcf/d, up 0.5% from August. EIA said the Permian and Haynesville account for more than 70% of the forecast growth. https://www.aga.org/research-policy/resource-library/natural-gas-market-indicators-october-1-2026/ - [2026-09 Natural Gas Monthly] July 2026 U.S. dry gas production was 113.71 Bcf/d, a post-1973 monthly high. That was +5.3% year on year. https://www.eia.gov/naturalgas/monthly/ - [2026-10-07] Marcellus Drilling News reports that EIA's July gross withdrawals set a U.S. record of 137 Bcf/d, but Appalachian output fell in July. The record came from Texas and New Mexico. The article is paywalled, so I only saw the summary. https://marcellusdrilling.com/2026/10/us-gas-production-hits-record-in-july-but-not-thanks-to-appalachia/ - [2026-03-13] EIA says Appalachia averaged 36.6 Bcf/d marketed in 2025, which was 31% of U.S. output. Growth there is limited by pipeline takeaway capacity. https://www.eia.gov/todayinEnergy/detail.php?id=67345 - [2026-08] Third-party data from oilpriceapi.com, citing EIA, shows Appalachia at about 37.0 Bcf/d for August 2026. This is the regional aggregate and includes the Utica. https://www.oilpriceapi.com/basins/appalachian - [2026-10 approx.] An unvetted blog says the Marcellus runs at about 27 Bcf/d, citing EIA STEO modeling in a 26.4–27.3 range. Treat this as low-reliability. 27 Bcf/d × 365 = 9.86 Tcf, and 27.4 Bcf/d is the 10.0 Tcf threshold. https://discoveryalert.com/education/marcellus-shale-lowest-cost-natural-gas-basin/ - [2026-10-09] Marcellus Drilling News headline: "Too Much Gas, Too Little Pipe: M-U Spot Prices Slump Below $1". This points to takeaway constraints in Appalachia. I saw the headline only, not the article. https://marcellusdrilling.com/2026/10/us-gas-production-hits-record-in-july-but-not-thanks-to-appalachia/ - [2025–26] EIA's STEO now reports production by region, with Appalachia as the Marcellus-plus-Utica aggregate. It no longer reports it by formation, and the Drilling Productivity Report has been discontinued. A Marcellus-only series therefore probably comes from EIA's monthly dry shale gas by play data. I could not confirm that series or its 2026 values. https://www.eia.gov/todayinenergy/detail.php?id=62283 - [2026-01-22] EIA ended the Natural Gas Weekly Update. Its notice says EIA revised its play and well identification methods for monthly dry shale gas production, which changed the volumes for various plays. https://www.eia.gov/naturalgas/weekly/ BOTTOM LINE: I could not find any figure for Marcellus-only 2026 dry gas production from EIA. The proxies point to a total near the 10 Tcf line, roughly 9.5–10 Tcf. Appalachia was flat to slightly down in July, and the regional aggregate is about 37 Bcf/d. The next STEO is on 2026-11-10. NOT FOUND: EIA's Marcellus-specific monthly or STEO series for 2026, the year-to-date Marcellus total, and the Marcellus 2025 annual total. The EIA data pages and the STEO tables could not be opened.

- [2026-10-06] The October 2026 STEO (next release 2026-11-10) is out. EIA's text, as retrieved, did not show the Marcellus dry-gas figure. The STEO page I reached lists a "Monthly U.S. dry shale natural gas production by formation" chart, which is the likely source series. I could not read its numbers. https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf - [2026-10-12] Threshold arithmetic: 10.00 Tcf over 365 days is about 27.4 Bcf/d, so Marcellus must average above roughly 27.4 Bcf/d in 2026. This is my own calculation. - [2026-10-04] A secondary, low-quality site says Marcellus dry output is about 27 Bcf/d, and that STEO 2026 modelling puts it in a 26.4–27.3 Bcf/d range. That sits just under the 27.4 threshold. It is unverified and I did not find its underlying EIA table. https://discoveryalert.com/education/marcellus-shale-lowest-cost-natural-gas-basin/ - [2026-09-04] The September STEO text says "Appalachian natural gas production remains near record highs" but that its growth this year is slower than in other regions. https://www.eia.gov/outlooks/steo/pdf/steo_text.pdf - [2026-10-01] The September STEO put 2026 U.S. dry gas production at 111.7 Bcf/d. It said the Permian and Haynesville account for more than 70% of the growth. That leaves little growth for Appalachia. https://www.aga.org/research-policy/resource-library/natural-gas-market-indicators-october-1-2026/ - [2026-10-08] The October STEO raised 2026 U.S. marketed gas to 123.5 Bcf/d, up 0.46% from September, and 2027 to 127.9 Bcf/d. The upward revisions are small and national. https://www.advisorperspectives.com/dshort/updates/2026/10/08/short-term-energy-outlook-october-2026 - [2026-09-25] Baker Hughes counted 23 active Marcellus rigs, unchanged on the week. That is down from 25 in September 2024 and about 36% below the January 2023 level. EIA said in 2024 that Marcellus output was flat while rigs fell. https://worldoilmonitor.com/marcellus-shale, https://www.eia.gov/todayinenergy/detail.php?id=63506 - [2026-09] The EIA Natural Gas Monthly shows July 2026 U.S. dry production at 113.71 Bcf/d, up 5.3% year over year. Growth is concentrated in the Permian and Haynesville. https://www.eia.gov/naturalgas/monthly/ - [2026-08] The August STEO says U.S. production growth in 1H26 was concentrated in the Permian and Haynesville. https://www.eia.gov/todayinenergy/detail.php?id=67944 - Reference class: the Marcellus grew from 9.28 Bcf/d in 2013 to about 14 Bcf/d in 2015. It reached roughly 25–27 Bcf/d in recent years, then plateaued on pipeline limits and low prices in 2024. It has not shown rapid growth since. https://www.ogj.com/general-interest/companies/article/17210283/new-well-productivity-data-provide-us-shale-potential-insights - Track record: the one study I found (a Post Carbon Institute analysis, dated roughly 2015) says EIA's early Marcellus estimates ran 6–18% above actual. That is old and its relevance to the current series is unclear. https://www.postcarbon.org/marcellus-production-outlook/ - The STEO is revised monthly, and the Marcellus series is also benchmarked to later data. The question resolves on EIA's published figure, so the vintage matters. I did not establish which vintage will be used. BOTTOM LINE: The 10.00 Tcf line (about 27.4 Bcf/d) sits at or just above the only available estimates of 2026 Marcellus output (about 26.4–27.3 Bcf/d, from a weak secondary source). The basin has been near-flat with falling rigs, so the outcome is probably close to the line and depends on EIA's exact figure. I did not confirm that figure from an EIA table. NOT FOUND: The actual October 2026 STEO Marcellus annual or monthly Bcf/d series. EIA's 2025 Marcellus annual total. Any prediction-market or analyst forecast for the 2026 Marcellus Tcf figure. The track record of STEO Marcellus forecasts against later outturns.

YES means: EIA's Marcellus dry natural gas production series, summed over the 2026 calendar months, comes to more than 10.00 Tcf (an average above about 27.4 Bcf/d). - [2026-10-06] I found the series behind this market. STEO Table 10b ("Crude Oil and Natural Gas Production from Shale and Tight Formations") carries a Marcellus formation dry-gas line. It was modeled on 2026-10-01 from Enverus state data. The quarterly Bcf/d figures are: 2025 Q1–Q4 27.0, 27.3, 26.7, 26.5; 2026 Q1–Q3 26.4, 26.9, 27.1. Q4 2026 and the 2026 and 2027 annual columns are blank ("no data available"). https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-06] The 2025 Marcellus annual average in that table is 26.9 Bcf/d, or about 9.82 Tcf. 2025 therefore sat about 0.18 Tcf below the 10.00 line. I calculated the Tcf figure myself. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-12] The strongest YES arithmetic, using the Q1–Q3 figures above, is a day-weighted Q1–Q3 average of about 26.8 Bcf/d, or about 7.32 Tcf over 273 days. Reaching 10.00 Tcf then needs Q4 (92 days) to average about 29.2 Bcf/d. That is about 2 Bcf/d above the Q3 print of 27.1. This is my own calculation from Table 10b. It is the hardest hurdle in the YES case, and it is a large one. - [2026-10-06] The quarterly path rises through the year: 26.4, then 26.9, then 27.1. Q3 2026 is the highest quarter since Q2 2025 (27.3). The Q3 print is a one-quarter high, not a break above 27.4. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-09-22] The most plausible YES path is a Q4 surge from curtailed volumes returning. EQT's CEO told Reuters that EQT and others had curtailed Marcellus/Utica output in recent months while waiting for regional prices to rise. Curtailed volumes could return quickly and lift Q4 above Q3. Even so, the jump needed is about 2 Bcf/d. https://boereport.com/2026/09/22/eqt-sees-higher-2026-us-natgas-output-on-lower-spending-ceo-says/ - [2026-07-23] EQT's Q2 update raised its 2026 production guidance by 90 Bcfe to 2,375–2,450 Bcfe, which works out to 6.5–6.7 Bcfe/d. The same update said MVP Southgate construction was moved up to this year and it would be online next year. This supports company-level growth, but it is not a basin-level 2 Bcf/d step. https://marcellusdrilling.com/category/energy-companies/eqt-corp/ - [2026-07-21] An MDN piece notes rising Northeast demand from coal retirements, data centers and new pipeline capacity. It also says growth is not guaranteed, because operators prioritize capital discipline. It adds that Appalachia has stayed flat at roughly 33–36 Bcf/d since 2020. This is a weak YES argument. https://marcellusdrilling.com/category/energy-companies/eqt-corp/ - [2026-10-06] The October STEO text says Henry Hub averages $3.48/MMBtu in 2026. U.S. dry gas production is 112.20 Bcf/d in 2026, up from 107.64 in 2025. A YES would need Marcellus to take a much larger share of that growth. EIA text says growth is concentrated elsewhere. https://www.eia.gov/outlooks/steo/report/natgas.php - [2026-10-06] Mechanism for a data-revision YES: the Marcellus history is derived from Enverus state data, and EIA revised its play identification methods (see the Jan 22 notice). A later benchmarking could lift 2026 monthly values. That upward revision would need to average about 0.6 Bcf/d across the year, which is far larger than the quarter-to-quarter moves in the table. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-12] Resolution-timing risk: the 2026 annual cell is currently blank. Q4 2026 data will not exist until winter 2026–27 releases, and there is one scheduled STEO before then (2026-11-10). If EIA never publishes a full-year 2026 Marcellus figure, the market has no YES trigger. This is my inference from the blank columns. https://www.eia.gov/naturalgas/data.php BOTTOM LINE: The only EIA series shows Marcellus at 26.4–27.1 Bcf/d through Q3 2026 and 26.9 Bcf/d for 2025. YES needs Q4 to average about 29.2 Bcf/d, or a large upward data revision, so the YES case is weak. NOT FOUND: A published EIA annual 2026 Marcellus value; Q4 2026 Marcellus values; the monthly Marcellus series; the dry shale gas by play XLS (not opened); any analyst forecast of a Q4 Marcellus surge to about 29 Bcf/d.

YES means: EIA's Marcellus dry natural gas production series, summed over the 2026 calendar days, totals more than 10.00 Tcf (an average above about 27.4 Bcf/d). - [2026-10-01] EIA's October 2026 STEO Table 10b gives Marcellus dry gas by quarter for 2026. Q1 was 26.4, Q2 26.9 and Q3 27.1 Bcf/d. For comparison, 2025 was 26.9 Bcf/d (Q1 27.0, Q2 27.3, Q3 26.7, Q4 26.5). The 2026 annual and Q4 cells show "-" (no data). EIA says the table's historical data comes from Enverus state administrative data. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-12] My arithmetic from those quarters: Q1 is 90 days, Q2 91 and Q3 92. The three quarters sum to about 7.32 Tcf (2,376 + 2,448 + 2,493 Bcf). The 10.00 Tcf threshold then needs Q4 (92 days) of about 2.68 Tcf, or roughly 29.2 Bcf/d. That is about 2 Bcf/d above any quarter on record in the table. If Q4 matches Q3 at 27.1, the year totals about 9.81 Tcf. If Q4 is 28.0, it totals about 9.89 Tcf. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-12] The 2026 average implied by the table is about 26.9 Bcf/d, which is flat on 2025 and about 0.5 Bcf/d (about 0.2 Tcf) short of the threshold. Marcellus was flat year over year while U.S. shale grew from 89.0 to about 92 Bcf/d. Haynesville rose from 13.2 to 14.4 Bcf/d and Permian from 21.5 to 23.4 Bcf/d. The growth is elsewhere. https://www.eia.gov/outlooks/steo/tables/pdf/10btab.pdf - [2026-10-12] A technicality helps NO. The table shows only published history through Q3 and has no Q4 forecast. The 10.00 Tcf cutoff is about 0.19 Tcf (roughly 2%) above the Q1–Q3 run-rate extrapolated over the year. Revisions would have to be about 0.5 Bcf/d on average to reach it. The Oct 6 dry shale by play release and the Nov 10 STEO are the last scheduled updates before the Mar 31 close. https://www.eia.gov/naturalgas/data.php - [2026-10-07] Marcellus Drilling News (paywalled, headline and summary only) reports Appalachian output fell in July, while the record U.S. gross withdrawals came from Texas and New Mexico. This is the wrong direction for a Q4 jump. https://marcellusdrilling.com/2026/10/us-gas-production-hits-record-in-july-but-not-thanks-to-appalachia/ - [2026-09-17/18] Energy Intelligence ran a Sept 17 story headlined "Appalachian Gas Producers Decry Pipe Constraints", and the Oct 9 MDN headline above has Marcellus/Utica spot prices below $1. Sub-$1 local pricing gives producers an incentive to defer or curtail volumes, not push output up. https://www.energyintel.com/000001a0-b1fd-d57c-a9e6-f9fd7c3f0000 - [2026-09] Expand Energy's CFO told Shale Insight (Sept 2026) that pipeline constraints hold Appalachia back. MDN's summary says most new Gulf LNG supply will come from the Haynesville. No new large takeaway has been identified for Q4 2026. Williams said Constitution could be in service by 2027, which is after this year. https://marcelluscoalition.org/shale-insight-2026-what-comes-next-for-appalachia/ and https://pgjonline.com/topics/world/north-america/marcellus - [2026-03] EIA revised its play-level methods in 2026, adding plays and removing others in the Permian (Today in Energy, March 2026). The Jan 2026 notice says volumes changed for various plays. This shows the series is re-benchmarked, but the changes noted are play-boundary reallocations. They are not evidence the Marcellus will be revised up by about 2%. https://www.eia.gov/todayinenergy/detail.php?id=67364 - [2026-09-04] EIA's STEO text frames Appalachian growth as slower than in other regions. Combined with a flat Marcellus history (flat in 2024 per EIA; flat again in 2025–26 per Table 10b), status quo means a total of about 9.8 Tcf. https://www.eia.gov/outlooks/steo/pdf/steo_text.pdf - [2026-10] The secondary discoveryalert.com page cites Marcellus at about 27 Bcf/d and a 26.4–27.3 range. That matches the Table 10b quarterly values, so it is consistent with the primary source. It also shows no value near 27.4 or higher. https://discoveryalert.com/education/marcellus-shale-lowest-cost-natural-gas-basin/ BOTTOM LINE: EIA's own October 2026 STEO Table 10b puts Marcellus at 26.4, 26.9 and 27.1 Bcf/d in Q1–Q3, which sums to about 7.32 Tcf. Reaching 10.00 Tcf needs Q4 of about 29 Bcf/d, against a flat series, pipeline limits and weak local prices. The status-quo path lands at about 9.8 Tcf, so this points to NO unless EIA makes a large upward revision or changes methodology. NOT FOUND: The STEO's 2026 annual and Q4 Marcellus cells (they show "-"). EIA's monthly Marcellus values in the Oct 6 dry shale by play XLS. Any history of how far Marcellus figures have been revised after publication. The paywalled body of the MDN July article.