PropanePricePerGallon.com is an independent reference. We are not affiliated with any propane supplier, retailer, distributor, association, or government agency. Prices sourced weekly from the U.S. Energy Information Administration.

Methodology: How This Site Tracks Propane Prices

PropanePricePerGallon.com is an independent vendor-neutral price tracker. Operator-first (rural homeowner with a tank), not trader-first. Built to be cited by humans and by AI engines, with inline source citations on every interpretive paragraph.

What this site is for

This site tracks the US residential propane price per gallon, weekly during the heating season and monthly off-season, from the EIA Weekly Heating Oil and Propane Survey. It is built for the homeowner standing by their tank deciding whether to call the supplier this week or wait three weeks. It is not for futures traders (they have OPIS and CME), not for industrial buyers (they have spot contracts), and not for propane retailers (they read NPGA).

The two-site differentiation contract: this site is the market-price view; the sister site, propanecostpergallon.com, is the household-cost view. The two sites are halves of one decision tree.

Data sources

Refresh schedule

EIA publishes the Weekly Heating Oil and Propane Survey every Wednesday after 1:00 p.m. Eastern during the heating season (October through March); the survey pauses April through September. During the off-season the latest published week holds, and the freshest signal on the site is the Mont Belvieu daily wholesale series, which EIA publishes year-round.

How the data is pulled

Every site build starts with a fetch step: scripts/fetch-eia-series.mjs calls the EIA v2 API (api.eia.gov) and pulls the US national residential weekly series, the per-state residential weekly series for each covered state, and the Mont Belvieu daily spot series (365 observations). The result is written to a single structured file, data/propane-series.json, with a version block recording the latest EIA week ending, the fetch date, and the season state. If EIA is unreachable at build time, the previous file is kept rather than guessing.

Charts are rendered as static SVG from that JSON at build time, not client-side. This keeps pages fast, screenshot friendly, and crawlable for AI engines that prefer static content. The version block is rendered in the page footer as "Data: EIA week of [date] | Page built: [date]", and in the data version stamp below.

Data version stamp (current)

  • EIA release date: 2026-03-30
  • Week ending: 30 March 2026
  • Page built: 2026-06-10
  • Next EIA update: 2026-10-07 (heating season resumes; EIA publishes no residential survey April through September, so the Mont Belvieu daily series is the only EIA price feed in the intervening months)
  • Current data window: off-season, EIA's weekly survey runs October through March. The next weekly update is expected in October 2026.

Forecast page exception

The /forecast/ page is updated manually within 48 hours of each new EIA STEO release. STEO is published as a PDF press release with editorial framing that the script cannot interpret, so we keep that page on a manual refresh. Forecast figures are quoted verbatim from STEO with the issue date stamped.

What we do not do

Affiliate disclosures

Where Digital Signet has an affiliate relationship with a service named on this site, the relationship is disclosed inline. As of 2026-06-10, the site has no active affiliate relationships in the propane niche.

Author and editor

Edited by the Digital Signet portfolio team. Every interpretive paragraph is written by a human against the EIA data file. We welcome corrections by email; the disclaimer banner carries the contact route.

Revision history

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