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Question: when will the EU aggregate gas storage first reach 70% (AGSI first Status Date ≥70%, judged using the database state 14 days later)? Forecasters agree the 14-day revision rule matters near the threshold and that 2026 is a low-start year (≈28% on 1 Apr, ≈31% in late Apr), so 70% requires roughly +39 percentage points and an average injection pace ~0.36 pp/day to hit the market’s 12 Aug upper-range date. Multiple teams weight 2021/2022/2025 as better analogues than 2023–24 and note early-April injections were only moderate and below the 10‑year average, making a June/early‑July crossing unlikely. The dominant update channel is LNG availability (Atlantic-basin inflows vs. Asia/Qatar competition), with weather and looser EU policy on front‑loading as important secondary influences. Probabilistic mixes concentrate mass in late August–September, with roughly one-third cumulative probability on or before 12 Aug and the remainder spread across late Aug, September, and a meaningful tail into October+ if LNG tightness or cool weather persists. Forecasters therefore recommend tracking AGSI weekly against per-day hurdle rates and LNG import signals rather than relying on 2023–24 patterns.
Forecast: Probability distribution:
All analysts agree the key driver is how quickly the EU can climb from roughly ~31% full in late April to 70%, i.e., about +39 percentage points. A naive extrapolation from the very recent injection pace (~1.5–2 TWh/day as cited by multiple forecasters) would place the 70% crossing well after August, but that likely underestimates the typical May–July ramp-up in injections.
I put most weight on the ENTSOG Summer Supply Outlook-based reasoning (Forecasters 2 and 3): in “better supply” cases, the 70% crossing looks like early-to-mid August; in “tight LNG / disruption” sensitivities it can shift to late August or even into September. Forecaster 1 looks too optimistic versus the implied injection needed to reach 70% by July, while Forecaster 4 may be overly pessimistic and leans on regulatory/incentive claims I cannot independently verify here.
Synthesis: the central tendency is around early August, but with substantial upside risk (i.e., later dates) due to LNG/supply and weather uncertainty. Because the question’s upper bound is open (2026-08-12), I explicitly place meaningful probability mass past it (dates > 2026-08-12) rather than forcing everything inside the window.
An amateur forecast often makes one of two mistakes: (1) linear extrapolation from the latest few days’ injection rate (which would predict very late summer/autumn), or (2) anchoring on “typical” historical timing without adjusting for the notably low starting level and scenario uncertainty.
This forecast improves by combining (a) the mechanical requirement of adding ~39 percentage points, (b) the seasonal ramp-up reality, and (c) scenario-based evidence (ENTSOG) that supports both an early-August base case and a material late-August/September tail. I’m moderately confident this is better calibrated than any single analyst’s curve, especially by avoiding overconfidence around the in-range upper bound.
Bot prediction.
Question: When will AGSI first show EU aggregate gas storage fill level at or above 70.0% in 2026? Final Prediction: Probability distribution:
Total Cost: extra_metadata_in_explanation is disabled Time Spent: extra_metadata_in_explanation is disabled LLMs: extra_metadata_in_explanation is disabled Bot Name: extra_metadata_in_explanation is disabled
Forecaster 1: Probability distribution:
Forecaster 2: Probability distribution:
Forecaster 3: Probability distribution:
Forecaster 4: Probability distribution:
Forecaster 5: Probability distribution:
The research briefing analyzes the current state of EU gas storage levels as of late April 2026, highlighting that they are critically low at approximately 31%, significantly below historical norms. Factors contributing to this low storage include a weak starting position at the beginning of the year, harsh winter conditions leading to increased withdrawals, disruptions in LNG supply due to the Strait of Hormuz crisis, and surging gas prices. Projections from various organizations suggest that the EU may only reach around 80% storage by winter, with some scenarios indicating that 70% may not be reached until late 2026 or possibly not at all.
The briefing outlines several modeling scenarios for gas storage levels in 2026, with varying assumptions about LNG supply. The most optimistic scenario suggests that 70% could be reached by early August, while more pessimistic scenarios indicate that it may not occur until October or November, depending on factors such as ongoing geopolitical tensions and competition for LNG. The analysis emphasizes the uncertainty surrounding the situation, with risks that could either delay or hasten the achievement of the 70% storage target.
Sources used in the research include:
EU gas storage levels are critically low and well below historical norms:
| Year | Start of April Level | Key Context | Estimated Date 70% Reached |
|---|---|---|---|
| 2025 | ~34% | Tight but manageable; 80% reached by Sept 16 [24]; 78% by Sept 1 [23] | Late July / Early August 2025 |
| 2024 | ~59% (record high post-winter) | Mild winter, easy injection; 95% by November [12] | ~June 2024 (started very high) |
| 2023 | Very high (post-crisis buildup) | Record storage after massive 2022 injections [17] | Likely May-June 2023 |
| 2022 | Low (Russian curtailment) | Emergency 72 bcm injection campaign [17] | ~August-September 2022 |
Starting point: ~28% on April 1, 2026 (314 TWh of ~1,133 TWh total capacity) [13][16] Target: 70% = ~793 TWh → Need to inject ~479 TWh from April 1.
Scenario 1 – LNG Optimal (ENTSOG base case):
Scenario 2 – LNG Tight (20% less LNG):
Scenario 3 – ACER base case (80% by ~November 1):
Scenario 4 – Pessimistic/Gazprom warning (70% barely reached or not reached):
Important caveats on linearity: Injection rates are not constant—they typically start slow in April-May, accelerate through June-August, and slow again as storage fills. Current injection rates (~0.15 bcm/day or ~1.6 TWh/day as of April 21) are very low but expected to ramp up [8].
I did not find a specific prediction market for the exact date when EU gas storage reaches 70% in 2026. The closest relevant market found was:
Downside risks (later date / possibly never):
Upside risks (earlier date):
Based on the available evidence, the most likely window for EU aggregate storage first reaching 70% in 2026 appears to be late August to early October 2026, with a central estimate around mid-September 2026. However, there is meaningful tail risk (~15-25%) that 70% may not be reached before November 2026, and a small but non-trivial risk it may not be reached at all this year if the Hormuz crisis significantly worsens. The situation is considerably more uncertain and pessimistic than the 2023-2025 injection seasons due to the unprecedented combination of low starting inventory and constrained LNG supply.
Let me carefully evaluate the critic’s points and adjust my forecast accordingly.
Hormuz structural constraints: The 3-5 year Qatar repair timeline is indeed a structural issue, not a transient shock. Combined with the flat seasonal spreads reducing commercial injection incentives, this deserves more weight.
Compounding risks: Asian LNG bidding wars, potential TurkStream disruption, and force majeures cascading through the system were underweighted.
P50 around mid-September remains well-supported: ENTSOG’s LNG Tight scenario reaching 76% by Sept 30 implies 70% around September 19. ACER’s 80% by winter suggests 70% around October 1. My original P50 of September 18 was actually reasonable for the optimistic-to-center case.
Question creator’s August 12 estimate: This conflicts sharply with all expert analysis. Unless there’s non-public information about imminent Hormuz resolution or emergency deals, the evidence strongly points to September as the most likely month. I’ll acknowledge uncertainty but not anchor to this outlier estimate.
I’m accepting the critic’s left-tail corrections while maintaining my view that mid-September remains the appropriate central estimate. The right tail adjustments are modest but warranted given structural supply constraints.
Key scenario mapping:
Updated prediction: Percentile 0.1: 2026-07-03 Percentile 1: 2026-07-20 Percentile 5: 2026-08-04 Percentile 10: 2026-08-16 Percentile 20: 2026-08-28 Percentile 30: 2026-09-05 Percentile 40: 2026-09-13 Percentile 50: 2026-09-20 Percentile 60: 2026-09-28 Percentile 70: 2026-10-10 Percentile 80: 2026-10-25 Percentile 90: 2026-11-14 Percentile 95: 2026-12-04 Percentile 99: 2026-12-26 Percentile 99.9: 2026-12-31
The critic makes several compelling points that I accept:
This exceeds even optimistic scenarios (3.86 TWh/day). My P0.1 of July 25 was physically impossible. I should have done this math.
Right tail too light: I stated “15-25% tail risk” of not reaching 70% before November but only allocated ~5% after November 18. This is internally inconsistent.
Underweighting Hormuz severity: The unprecedented nature of this supply shock warrants heavier weighting.
Central estimate around mid-September: Both ACER’s base case and ENTSOG’s LNG Tight scenario point to 70% being reached in September. I’ll keep my median within this range, perhaps slightly earlier than the critic suggests due to strong EU political incentives for emergency measures.
The question creator’s estimate is anomalous: Their “likely not higher than Aug 12” contradicts all expert analysis and current data.
Physical constraints on the left tail:
Political dimension: EU may invoke emergency measures to force injection regardless of commercial incentives, which could marginally accelerate the central case.
I accept most of the critic’s adjustments while making minor tweaks:
Updated prediction: Percentile 0.1: 2026-08-07 Percentile 1: 2026-08-14 Percentile 5: 2026-08-22 Percentile 10: 2026-08-27 Percentile 20: 2026-09-03 Percentile 30: 2026-09-09 Percentile 40: 2026-09-14 Percentile 50: 2026-09-18 Percentile 60: 2026-09-25 Percentile 70: 2026-10-04 Percentile 80: 2026-10-18 Percentile 90: 2026-11-06 Percentile 95: 2026-11-23 Percentile 99: 2026-12-16 Percentile 99.9: 2026-12-31
I appreciate the thorough critique and find several points compelling. Let me address each:
Left tail was too aggressive: The critic correctly identifies that my P0.1 (July 18) would require injection rates to more than triple immediately. At current rates (~0.13 pp/day), reaching 70% from 31% in 86 days would need 0.45 pp/day - completely unrealistic.
ENTSOG scenario inconsistency: I stated that the optimal scenario (early August for 70%) is “increasingly unrealistic” yet placed P5 at August 6, which is within the optimal scenario. This is internally contradictory.
Structural supply constraints underweighted: Qatar’s 17% capacity damage with 3-5 year repairs means supply constraints persist regardless of whether the Strait of Hormuz reopens. This isn’t a pricing problem that high bids can solve.
Flat seasonal spreads: The collapse of summer-winter price differentials fundamentally alters commercial incentives. The aggressive 2022-2023 filling was profit-driven; this year lacks that driver.
Median around mid-September: Multiple authoritative projections (ACER, ENTSOG Tight scenario) converge on 70% being reached in mid-September, supporting my P50.
Right tail structure: Given the unprecedented combination of challenges, maintaining meaningful probability mass through October-November seems appropriate.
The critic’s point about EU emergency coordination is well-taken - when Brussels activates crisis mode, outcomes can accelerate beyond market-based projections. However, given current constraints, this would likely pull outcomes to the earlier range of what’s physically possible, not beyond.
Rechecking the math: From ~31% to 70% requires ~39 percentage points of injection. Current rates (~0.13 pp/day) would need to roughly double to average rates (~0.26 pp/day) to reach 70% by mid-September - this is achievable with typical summer acceleration but not guaranteed given supply constraints.
The critic’s suggested adjustments are well-calibrated. Shifting the left tail later by 10-14 days properly accounts for:
I’m adopting the critic’s suggested distribution with only minor refinements.
Updated prediction: Percentile 0.1: 2026-07-28 Percentile 1: 2026-08-05 Percentile 5: 2026-08-14 Percentile 10: 2026-08-21 Percentile 20: 2026-08-28 Percentile 30: 2026-09-04 Percentile 40: 2026-09-11 Percentile 50: 2026-09-18 Percentile 60: 2026-09-25 Percentile 70: 2026-10-03 Percentile 80: 2026-10-15 Percentile 90: 2026-10-30 Percentile 95: 2026-11-18 Percentile 99: 2026-12-18 Percentile 99.9: 2026-12-31
The critic has made several compelling points that warrant adjustments to my forecast.
Left tail too aggressive: I agree completely. My P0.1 at July 25 was unrealistic. From ~31% to 70% by late July would require a sustained injection rate of ~0.42%/day - roughly 3x the current rate. Even with summer acceleration, this is nearly impossible given the hard physical constraints from Qatar’s damaged LNG capacity (17% damaged, 3-5 year repair timeline) and the ongoing Hormuz crisis.
Right tail too thin: The critic correctly points out that Gazprom explicitly warned 70% may not be reached at all. My original ~1% probability for December dates significantly underweighted this tail risk given structural supply constraints.
ACER forecast timing: The critic rightly notes that ACER’s 80%-by-November forecast predates the Hormuz crisis (which began February 28). This makes my ACER-anchored median too optimistic.
Flat seasonal spreads underweighted: Without commercial incentives, injection requires explicit policy mandates with associated execution risks and delays. This deserves more weight.
General distribution shape remains sound: A central estimate in the late September range is still reasonable, just shifted slightly later.
Seasonal acceleration will occur: Even with supply constraints, injection rates do accelerate in summer. The question is magnitude, not direction.
The question creator’s “likely not higher than August 12” comment appears outdated - almost certainly made before the Hormuz crisis began.
Demand destruction could be meaningful: Industrial demand destruction from high prices could reduce the storage gap, providing some upside.
Weather variance: The critic is right that a hot summer (increasing gas-for-power demand) versus a mild summer could create a 4-6 week swing in outcomes.
I’m shifting my entire distribution approximately 3-5 days later at the median, with larger shifts at the tails. The critic’s suggested adjustments are well-reasoned, and I’m largely aligning with them, though I’m marginally less pessimistic at a few percentiles.
Updated prediction: Percentile 0.1: 2026-08-01 Percentile 1: 2026-08-10 Percentile 5: 2026-08-20 Percentile 10: 2026-08-27 Percentile 20: 2026-09-04 Percentile 30: 2026-09-11 Percentile 40: 2026-09-17 Percentile 50: 2026-09-24 Percentile 60: 2026-10-01 Percentile 70: 2026-10-09 Percentile 80: 2026-10-22 Percentile 90: 2026-11-07 Percentile 95: 2026-11-21 Percentile 99: 2026-12-13 Percentile 99.9: 2026-12-29
Right tail compression: The critic is absolutely correct. If the research explicitly states “15-25% tail risk that 70% may not be reached before November,” my original P80 at October 16 was mathematically inconsistent. If 15-25% of scenarios don’t reach 70% before November 1, then P75-P80 should be around late October/early November.
Unprecedented physical constraint: The critic makes an excellent point distinguishing this from 2022. In 2022, Europe could simply outbid Asia for LNG cargoes in open markets. Now, with Hormuz blocking 20% of global LNG AND 17% of Qatar’s export capacity damaged for years, this is a physical availability problem, not just a pricing problem. Europe could offer €100/MWh and still not secure enough cargoes.
Gazprom warning weight: A major supplier explicitly warning 70% might not be reached deserves more probability weight in my right tail than I originally assigned.
“Never reaches 70%” scenario: My P99 at December 15 implied only ~1% chance of extreme delay. Given the compounding risks, the critic’s 8-10% for this scenario (or barely reaching it) seems more appropriate.
Central tendency: My mid-September median was well-anchored to ENTSOG’s LNG Tight scenario and ACER projections. The critic’s revision only shifts this by ~4 days, validating my core reasoning.
Left tail structure: The critic and I largely agree on P0.1-P10, suggesting the optimistic scenarios (rapid diplomatic resolution, demand destruction, EU emergency coordination) are appropriately weighted.
I’m adjusting my distribution to:
Updated prediction: Percentile 0.1: 2026-07-18 Percentile 1: 2026-07-30 Percentile 5: 2026-08-12 Percentile 10: 2026-08-22 Percentile 20: 2026-09-02 Percentile 30: 2026-09-10 Percentile 40: 2026-09-17 Percentile 50: 2026-09-24 Percentile 60: 2026-10-02 Percentile 70: 2026-10-12 Percentile 80: 2026-10-28 Percentile 90: 2026-11-16 Percentile 95: 2026-12-06 Percentile 99: 2026-12-25 Percentile 99.9: 2026-12-31
Agent Forecast (date, confidence: medium)
Base Rate: 2025 reached 70% on Aug 5 starting from ~35% on April 1. 2026 starts ~7pp lower (~28-31%) with confirmed LNG supply tightening and inverted seasonal spreads. The 2025 EU storage regulation amendment provides MORE flexibility (Oct 1-Dec 1 window, indicative interim targets), removing the regulatory pressure for accelerated mid-summer fills. Central estimate: 70% threshold reached early-to-mid September 2026, placing ~86% probability mass in ‘After Aug 12’.
Initial Reasoning:
Key Uncertainties:
Evidence Sources (13):
Grounding Facts (passed to reviewers):
Draft: After Aug 12, 2026: 83.0%, Jul 29, 2026 to Aug 12, 2026: 10.0%, Jul 16, 2026 to Jul 29, 2026: 4.0%, Jul 02, 2026 to Jul 16, 2026: 2.0%, Jun 18, 2026 to Jul 02, 2026: 1.0%
Reviewer Panel:
Reviewer (reasoning)
The forecast’s weakest link is its reliance on historical base rates and current mid-April injection rates without sufficiently accounting for EU regulatory mandates that effectively force accelerated injections later in the refill season. It also underestimates the likely ramp-up in injection rates once spreads turn neutral or positive, which could pull the 70% threshold into late August rather than early September. Finally, the weighting on post-Aug 12 resolution seems high given the uncertain duration and depth of negative spreads.
Objections:
Reviewer (calibration)
The core reasoning for a significant delay is based on the claim of 20% global LNG supply being offline due to the Persian Gulf conflict, a specific severity not explicitly supported by the provided facts. Additionally, the forecast presents an inconsistency by highlighting current injection rates being 10% above the 5-year average, yet then projecting future rates that are higher than the current pace without fully reconciling this acceleration against negative commercial incentives. While the overall direction of a later resolution than previous years is plausible, the specific factors driving the timing need more precise justification.
Objections:
Reviewer (fact-checker)
3 unsupported claim(s). Verdict: minor_issues
Unsupported claims:
Adjustment Rationale:
Verified the EU Gas Storage Regulation status via web search: the 2025 amendment loosened the framework — the 90% target can be met any time Oct 1-Dec 1, intermediate targets are now indicative only, and member states can deviate by up to 15-20%. This weakens the reasoning reviewer’s claim that regulatory mandates would force accelerated injection (their objection assumed pre-amendment Nov 1 rigidity). The 70% threshold sits below even the flexible target floor, so regulatory pressure does not act as a near-term forcing function. Combined with the calibration reviewer’s valid point that 17% mass on earlier bins is too generous given the 7pp lower starting level versus 2025 (which itself only reached 70% on Aug 5), I shifted ~3pp from the Jul 16-Aug 12 bins toward After Aug 12 (now 0.86, up from 0.83). This aligns more closely with the ensemble signal of 85.6%. I retained medium confidence rather than high, acknowledging the fact-checker’s valid flag that specific TWh figures and the 20% LNG offline claim are estimates rather than verified facts — though directionally the LNG tightening is well-established.
forecast_sdk | 512.3s | research $0.7522 + reviewers $0.0084 + reconcile $0.3723 = $1.1329
Extracted Date Percentile Values: {0.1: 1783209600.0, 1.0: 1783814400.0, 5.0: 1784678400.0, 10.0: 1785369600.0, 15.0: 1785888000.0, 20.0: 1786320000.0, 25.0: 1786752000.0, 30.0: 1787097600.0, 35.0: 1787443200.0, 40.0: 1787788800.0, 45.0: 1788134400.0, 46.0: 1788220800.0, 47.0: 1788307200.0, 48.0: 1788393600.0, 49.0: 1788480000.0, 50.0: 1788566400.0, 51.0: 1788652800.0, 52.0: 1788739200.0, 53.0: 1788825600.0, 54.0: 1788912000.0, 55.0: 1788998400.0, 60.0: 1789344000.0, 65.0: 1789689600.0, 70.0: 1790121600.0, 75.0: 1790553600.0, 80.0: 1791158400.0, 85.0: 1791936000.0, 90.0: 1792886400.0, 95.0: 1793836800.0, 99.0: 1795996800.0, 99.9: 1798675200.0}
Model’s Answer:
As of April 25, 2026, EU aggregate gas storage stands at approximately 30.95% — well below the 70.0% threshold. Storage bottomed near 28% in late March/early April, and the injection season has just begun. Multiple authoritative sources confirm the current level is about 14 percentage points below the seasonal norm (~45%).
Starting deficit matters enormously. The 2026 injection season begins from the lowest April level in years (~28-31%), compared to a typical 35-45%. This extra ~14pp deficit requires significant additional injection volume (~150+ TWh) that takes 40-60 days at typical summer rates to make up.
Current injection rates are low. At ~1,900 GWh/day currently, versus the ~3,400 GWh/day average needed to reach 90% by November 1, injections must more than double from current pace.
Market headwinds. High TTF prices, tight LNG supply, and narrow seasonal spreads discourage aggressive commercial injection.
The closest analog is 2022, when storage was ~26% on April 1 and reached 70% around August 20-25 (about 143 days), driven by crisis-mode policy urgency and aggressive injection mandates. In 2026, the starting level is similar (~28% April 1), but injection rates are currently slower, and LNG markets are tighter.
From ~341 TWh (31%) to ~770 TWh (70%) requires ~429 TWh of net injection.
Given slow current injection and market headwinds, the base case average injection is likely 2,800–3,200 GWh/day, pointing to a late August to mid-September crossing.
Assumption 1: Injection rates will eventually accelerate to 3,000+ GWh/day. If LNG supply disruptions or sustained high prices prevent this (probability ~20%), 70% could be delayed to October or later.
Assumption 2: No major demand-side shock (e.g., cold summer, industrial restart). If unexpected draw occurs (probability ~10%), timeline extends significantly.
Assumption 3: Policy mandates drive injection despite unfavorable economics. If EU enforcement weakens (probability ~10%), the threshold could be reached even later.
A strong acceleration in injection — perhaps from surprise LNG cargo arrivals, policy intervention mandating aggressive fills, or mild weather reducing demand — could compress the timeline. This mirrors 2022’s energy crisis response. I estimate ~12% probability of crossing 70% before August 12.
Sustained high prices, LNG supply disruptions (Middle East tensions, competition from Asia), or infrastructure constraints could keep injection rates below 2,500 GWh/day, pushing the crossing well into autumn. I estimate ~20% probability of not reaching 70% until after October 1.
Percentile .1: 2026-07-05 Percentile 1: 2026-07-12 Percentile 5: 2026-07-22 Percentile 10: 2026-07-30 Percentile 15: 2026-08-05 Percentile 20: 2026-08-10 Percentile 25: 2026-08-15 Percentile 30: 2026-08-19 Percentile 35: 2026-08-23 Percentile 40: 2026-08-27 Percentile 45: 2026-08-31 Percentile 46: 2026-09-01 Percentile 47: 2026-09-02 Percentile 48: 2026-09-03 Percentile 49: 2026-09-04 Percentile 50: 2026-09-05 Percentile 51: 2026-09-06 Percentile 52: 2026-09-07 Percentile 53: 2026-09-08 Percentile 54: 2026-09-09 Percentile 55: 2026-09-10 Percentile 60: 2026-09-14 Percentile 65: 2026-09-18 Percentile 70: 2026-09-23 Percentile 75: 2026-09-28 Percentile 80: 2026-10-05 Percentile 85: 2026-10-14 Percentile 90: 2026-10-25 Percentile 95: 2026-11-05 Percentile 99: 2026-11-30 Percentile 99.9: 2026-12-31
Resolution of Disagreements:
Disagreement 1 (Hormuz reopening timeline): The research CLEARLY resolves this. The Strait of Hormuz was declared “completely open” on April 17, 2026, but the reality is far more nuanced than a simple reopening:
Verdict: The strait is technically “open” but practically still severely constrained. This is WORSE than what forecasters 2 and 3 assumed (they gave 35-45% probability to meaningful recovery before August) but BETTER than what forecasters 4 and 5 assumed (who gave only 10-33% to meaningful recovery). The evidence supports a slow, gradual recovery of shipping over weeks/months rather than either a snap-back or continued total closure.
Disagreement 2 (Qatar LNG restart): The research CLEARLY resolves this in a pessimistic direction:
Verdict: This is significantly worse than ALL forecasters assumed. Most forecasters built scenarios around Qatar “partial restart” by June-July or “full restart by end of August.” The evidence shows physical damage requiring years of repair, not months. This eliminates the optimistic scenarios (4 and 5 from most forecasters) almost entirely and makes even the “2022-analog” scenario harder to achieve.
Disagreement 3 (Injection rate acceleration): Partially resolved. Wood Mackenzie explicitly states European storage “may only reach around 70%” for the year. The EU has lowered the November target from 90% to 80%. Combined with the Qatar damage being far worse than assumed, injection rates are unlikely to match 2022 levels because the LNG supply gap is structural, not temporary.
Updated Analysis:
The research fundamentally changes the picture in two ways:
Hormuz is partially open but practically constrained - shipping is resuming very slowly (fewer than 10 ships/day vs. 151 pre-conflict). This means some non-Qatari LNG can flow, but recovery will be gradual over weeks/months. The ceasefire remains fragile with a May 1 War Powers deadline creating additional uncertainty.
Qatar LNG is essentially offline for years, not months - This is the critical finding. The physical damage to Ras Laffan means Qatar’s ~80 Mtpa (19% of global LNG) is largely unavailable through 2026 and beyond. This eliminates the scenarios where Qatar restarts drive faster injection.
Given these findings:
However, some mitigating factors remain:
I’m shifting the distribution later than the current weighted average, with more weight on September-October outcomes and less on July outcomes.
Confidence: HIGH
Percentile 10: 2026-07-22 Percentile 20: 2026-08-04 Percentile 40: 2026-08-18 Percentile 60: 2026-09-02 Percentile 80: 2026-09-25 Percentile 90: 2026-10-10
Forecast (percentiles, aggregated):
Per-model forecasts:
Rationale: Summary EU aggregate gas storage started the 2026 injection season at a multi-year low of approximately 28% on April 1 and reached roughly 30.9% by late April. Reaching the 70.0% threshold requires an increase of over 39 percentage points. The trajectory heavily depends on global liquefied natural gas (LNG) availability and the urgency of European injection strategies. The European Network of Transmission System Operators for Gas (ENTSOG) outlines scenarios ranging from an optimal LNG supply—reaching 90% by September—to tighter supply conditions where 70% might barely be achieved by autumn. Early injection rates in April were relatively sluggish, gaining only about 3% over three weeks. Furthermore, high LNG costs and ongoing geopolitical risks have prompted discussions about softening the typical 90% November fill target to a more economically viable 80%. Anticipating a steady, rather than aggressive, injection profile to manage prices, the most likely timeframe to reach the 70.0% threshold is early September.
Strongest Arguments for Sooner
Strongest Arguments for Later
Key Uncertainties
When will AGSI first show EU aggregate gas storage fill level at or above 70.0% in 2026?
Key figures
Historical context
Tailwinds
Headwinds
Detailed reasoning
My analysis for the 70% storage threshold is primarily driven by current inventory levels and the required injection volume to bridge the gap from the April 2026 starting point. As of late April 2026, the EU aggregate storage level is reported at approximately 30-31%. This represents an exceptionally low starting point compared to recent years (59% in 2024 and 34% in 2025). To reach the 70.0% threshold, the EU must add approximately 39 to 40 percentage points of capacity. Given a total EU storage capacity of roughly 1,131 TWh, this requires a net injection of approximately 440-450 TWh.
I have weighted the injection rate based on historical performance and current headwinds. Under normal summer conditions, the EU aggregate injection rate typically ranges between 3 TWh and 5 TWh per day during the peak filling months of June and July. However, 2026 faces several unique constraints: a global LNG deficit estimated at 26 bcm, the closure of the Strait of Hormuz affecting Qatari flows, and a narrow summer-winter price spread that reduces commercial incentives for early refilling.
If we assume an average daily injection rate of 3.5 TWh/day (reflecting a somewhat constrained supply environment), it would take approximately 126 days from April 23 to reach the 70% mark. This leads directly to a late August timeline (August 27). If injections can be accelerated to 4.5 TWh/day through regulatory mandates or price premiums (like those introduced in Italy), the timeline moves forward by about 25 days to early August. Conversely, if LNG remains ‘tight’ (a scenario projected by ENTSOG), and rates drop toward 2.5-3 TWh/day, the 70% threshold would not be breached until mid-to-late September.
I have discarded a single reasoning trace that suggested a current storage level of 63%, as it is heavily contradicted by primary data from GIE/AGSI, Trading Economics, and Reuters, which all confirm levels near 30%. My final forecast weights the ‘Baseline’ and ‘LNG Tight’ scenarios most heavily, as the geopolitical disruptions in the Middle East and the end of Russian transit through Ukraine make a ‘rapid’ refill (May/June) virtually impossible. The median date of 22nd August 2026 represents the most likely convergence of these supply constraints and the seasonal injection cycle.
Key uncertainties
Conclusion