Sources and methodology

every number traces to one of these

Cetaflow only publishes data from sources whose reuse terms are recorded and approved. A source marked pending is not used on the site yet.

Source	Used for	Updates	Terms of reuse	Status
epa-emts	Weekly D4 and D6 RIN prices (volume-weighted averages) and history since 2010	weekly	US federal work, public domain (17 U.S.C. 105); attribute EPA	Live
federal-register	EPA Renewable Fuel Standard rules and notices, effective dates and comment deadlines	daily	US government publication, public domain; the API needs no key	Live
eia-wpsr	Fuel ethanol production and stocks; biodiesel and renewable diesel production and stocks	weekly	EIA permits use and distribution of its data with acknowledgement of source and publication date (eia.gov/about/copyrights_reuse.php)	Live
usda-wasde	Soybean oil price	monthly	US federal work (17 U.S.C. 105); USDA-created data only, third-party material excluded	Live
carb-compliance-calendar	LCFS reporting, verification and annual compliance dates	yearly	CARB public information; only the dates (facts) are used, with a link to the source	Live
carb-lcfs-weekly	Weekly California LCFS credit prices, ranges and volumes since 2016	weekly	State of California: information on state websites is in the public domain unless otherwise indicated (ca.gov/use); only CARB-created figures are used	Live

How the numbers are checked

RIN prices are EPA's weekly volume-weighted averages, not daily assessed prices. Every series shows its source, its frequency and the period it covers.

The compliance brief is generated from the data. Each figure and date in it must exist in the source data or a linked document, or the brief is blocked instead of published.

Regulatory items link to the official Federal Register document. Cetaflow does not rewrite the agency's text.

Cetaflow provides market information, not investment advice, and does not redistribute paid price assessments.