Pull EIA's weekly U.S. propane/propylene ending stocks via the v2 Open Data API to track national supply levels for delivery planning
domain: eia.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Register for a free EIA API key at eia.gov/opendata (required for all v2 requests).
Use the legacy-series shortcut route https://api.eia.gov/v2/seriesid/PET.WPRSTUS1.W?api_key=YOUR_KEY to retrieve the 'Weekly U.S. Propane and Propylene Ending Stocks Excluding Propylene at Terminal' series directly (Thousand Barrels).
Alternatively query the full v2 route petroleum/stoc/wstk with facets (e.g., product=EPLLPZ) and frequency=weekly if you need PADD-level breakdowns rather than the single national series.
Parse the JSON response.data array for period (week-ending date) and value (thousand barrels); results are typically published Wednesdays.
Cross-reference against EIA's 'Heating Oil and Propane Update' / 'This Week in Petroleum' propane section for narrative context on the same release.
Known gotchas
The v2 API caps responses at 5,000 rows; use start/end or offset/length to paginate multi-year pulls rather than requesting the full history in one call.
'Excluding Propylene at Terminal' (WPRSTUS1) and 'Including Propylene at Terminal' are two different series with different IDs — confirm you're using the one your use case needs.
This is a stocks/inventory series, distinct from EIA's propane price index series already covered elsewhere — don't conflate the two route families.
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