Natural Gas Storage Before Winter 2026–27: What the October Forecast Means for Your Bill

The October forecast is lower than September—but still above the five-year average

EIA's October 6 Short-Term Energy Outlook estimates that U.S. working natural gas inventories totaled 3,523 billion cubic feet at the end of September. It forecasts a 328 Bcf build during October, reaching 3,850 Bcf at month-end—2% above the five-year average as the heating season begins November 1. That October 31 figure is still a forecast, not a measured storage result, regional utility balance or residential price.

The revision matters. EIA's September 9 outlook forecast 3,969 Bcf at the end of October, 5% above the five-year average. The October forecast is 119 Bcf lower than the September forecast when the two published values are subtracted. That is a CoolCompare calculation from two EIA releases, not an additional EIA projection. Preserve each release date rather than silently replacing the old number: a changing forecast is evidence of uncertainty, not proof that either release was a household bill prediction.

Storage is a supply cushion, not a guarantee against a cold-weather price move

EIA says above-average inventories provide additional supply to meet winter heating demand. Its base forecast assumes national heating degree days are nearly unchanged from last winter and 1% below the previous five-winter average. Under those conditions, storage can buffer higher consumption or reduced production. EIA also states that prolonged cold could increase withdrawals beyond its forecast. Storage therefore changes the market starting position; it does not remove weather, production, pipeline or regional-delivery risk.

A national inventory total also cannot show how much gas is deliverable to a particular utility on a severe day. Regional storage, pipeline constraints, utility procurement and local regulation differ. Use the serving utility's official emergency and tariff information for address-specific decisions. Do not turn a 2%-above-average national forecast into a claim that a local shortage, outage or rate increase is impossible, and do not create urgency by treating an ordinary forecast revision as evidence of an imminent crisis.

Wholesale market numbers are not the amount printed on a home bill

EIA forecasts the Henry Hub spot price will average $3.16 per million British thermal units in 2027, 9% below its 2026 annual forecast. Henry Hub is a wholesale benchmark with different units, timing and included costs from most residential bills. EIA explains that residential natural-gas prices also reflect transmission, distribution, taxes and other charges. A local distribution company may buy gas ahead of use, and a purchased-gas adjustment can pass commodity changes through later.

A household may be billed in therms, Ccf or Mcf and may pay a fixed customer charge, delivery charge, riders and taxes in addition to a usage charge. Never replace the current utility tariff with Henry Hub or divide a national storage figure into a household price. For a useful comparison, record the exact billed unit, utility conversion factor, fixed charges and usage-based charges. Keep the dated EIA forecast in a separate context column.

Build mild, base and cold cases from the home's own history

Collect at least the last two November–March billing seasons. For each bill, record service dates, billing days, gas units, total paid and fixed charges. Note the thermostat schedule, occupied hours, furnace service events, water-heating or cooking loads and any envelope work. Compare daily use as well as the monthly total when billing periods differ. If local heating degree-day data are used, label the station and dates; one national weather assumption cannot normalize an individual home.

Create three planning cases. The mild case can use lower weather-driven consumption, the base case can start from a representative same-season bill, and the cold case can raise consumption without pretending to know the next storm. Apply the utility's current rate structure to each case and keep future-rate changes explicit. A range built from the home's measured units is more useful than a single bill number derived from national storage, but it remains a scenario rather than a guarantee.

Use the new forecast to challenge savings claims—not to choose equipment

If a furnace or dual-fuel proposal claims a precise annual saving, ask which delivered gas price, electric tariff, weather year, equipment efficiency and home load were used. Recalculate the claim with the household's current bills and more than one fuel-price case. For a heat-pump comparison, include low-temperature performance, backup heat, electrical work and the same home load. For a furnace comparison, include realistic seasonal efficiency, venting, gas service and the exact scope. A storage forecast cannot establish the winner.

Compare the cash price, financed total, exact equipment, load assumptions, ducts, electrical and fuel work, permits, commissioning, warranties, maintenance and exclusions. Address safety, comfort and reliability before commodity-market speculation. The furnace cost page organizes installed scope, Decision Room compares user-entered ownership paths and the bill checker separates household charges. None of them is a utility forecast, contractor quote or reason to replace working equipment by itself.

Replace forecast assumptions with measured winter evidence as it arrives

EIA will update its outlook again; the October release lists November 10 as the next scheduled release. Keep the September and October forecasts in the record, then add later revisions without rewriting the history. When October inventory data become measured rather than forecast, label that change. Through winter, update the household table with actual units, charges, billing days and weather context so price and consumption do not get collapsed into one percentage.

At season end, compare three distinct layers: EIA's dated national forecast, the household planning range and the bills actually received. Record service calls, equipment faults, thermostat changes and weatherization work that affected use. This produces an auditable baseline for the next repair, replacement or fuel-choice decision. It also prevents a favorable national supply headline from being presented as a promise that a specific home's cost went down.

Next steps

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How this guide was produced

CoolCompare Editorial reviewed 5 linked evidence sources and separated source facts from homeowner checks, calculations and limitations. This page does not claim hands-on product testing, professional inspection or address-specific verification unless the article explicitly documents it.

Reviewed 8 October 2026. See the editorial policy, fact-checking standard and corrections process.

Sources and further reading

Questions or corrections? Contact the editorial team.