---
kind: "section"
citation: "40 C.F.R. § 80.1425"
title: "40"
number: "80.1425"
heading: "Renewable Identification Numbers (RINs)."
url: "https://uscodex.org/cfr/40/80.1425"
---

# §80.1425. Renewable Identification Numbers (RINs).


RINs generated on or after July 1, 2010 shall not be generated as a 38-digit code, but shall be identified by the information specified in [paragraphs (a) through (i)](#a..i) of this section and introduced into EMTS as data elements during the generation of RINs pursuant to [§ 80.1452(b)](/cfr/40/80.1452.md?p=b). For RINs generated prior to July 1, 2010, each RIN is a 38-digit code of the following form:

- (a) **K is a number identifying the type of RIN as follows—**
  - (1) K has the value of 1 when the RIN is assigned to a volume of renewable fuel pursuant to [§ 80.1426(e)](/cfr/40/80.1426.md?p=e) and [§ 80.1428(a)](/cfr/40/80.1428.md?p=a).
  - (2) K has the value of 2 when the RIN has been separated from a volume of renewable fuel pursuant to [§ 80.1429](/cfr/40/80.1429.md).
  - (3) K has the value of 3 when the RIN is assigned to a volume of RNG pursuant to §§ [80.125(c)](/cfr/40/80.125.md?p=c) and [80.1426(e)](/cfr/40/80.1426.md?p=e).
- (b) **YYYY is the calendar year in which the RIN was generated.**
- (c) CCCC is the registration number assigned, according to [§ 80.1450](/cfr/40/80.1450.md), to the producer or importer of the batch of renewable fuel.
- (d) FFFFF is the registration number assigned, according to [§ 80.1450](/cfr/40/80.1450.md), to the facility at which the batch of renewable fuel was produced or imported.
- (e) BBBBB is a serial number assigned to the batch which is chosen by the producer or importer of the batch such that no two batches have the same value in a given calendar year.
- (f) RR is a number representing 10 times the equivalence value of the renewable fuel as specified in [§ 80.1415](/cfr/40/80.1415.md).
- (g) D is a number determined according to [§ 80.1426(f)](/cfr/40/80.1426.md?p=f) and identifying the type of renewable fuel, as follows:
  - (1) **D has the value of 3 to denote fuel categorized as cellulosic biofuel.**
  - (2) **D has the value of 4 to denote fuel categorized as biomass-based diesel.**
  - (3) **D has the value of 5 to denote fuel categorized as advanced biofuel.**
  - (4) **D has the value of 6 to denote fuel categorized as renewable fuel.**
  - (5) **D has the value of 7 to denote fuel categorized as cellulosic diesel.**
- (h) **SSSSSSSS is a number representing the first gallon-RIN associated with a batch of renewable fuel.**
- (i) **EEEEEEEE is a number representing the last gallon-RIN associated with a volume of renewable fuel.**

## Notes

### Amendments

[75 FR 14863, Mar. 26, 2010, as amended at 75 FR 79977, Dec. 21, 2010; 91 FR 16489, Apr. 1, 2026]

### Source

Source: 75 FR 14863, Mar. 26, 2010, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7414, 7521, 7542, 7545, and 7601(a).

### Source

Source: 38 FR 1255, Jan. 10, 1973, unless otherwise noted.

### Amendments

[75 FR 14863, Mar. 26, 2010, as amended at 75 FR 79977, Dec. 21, 2010; 91 FR 16489, Apr. 1, 2026]