---
kind: "section"
citation: "40 C.F.R. § 63.9990"
title: "40"
number: "63.9990"
heading: "What are the subcategories of EGUs?"
url: "https://uscodex.org/cfr/40/63.9990"
---

# §63.9990. What are the subcategories of EGUs?

- (a) Coal-fired EGUs are subcategorized as defined in [paragraphs (a)(1) through (3)](#a-1..a-3) of this section and as defined in [§ 63.10042](/cfr/40/63.10042.md).
  - (1) EGUs designed for coal with a heating value greater than or equal to 8,300 Btu/lb,
  - (2) EGUs designed for low rank virgin coal, and
  - (3) **EGUs designed for EBCR.**
- (b) Oil-fired EGUs are subcategorized as noted in [paragraphs (b)(1) through (b)(4)](#b-1..b-4) of this section and as defined in [§ 63.10042](/cfr/40/63.10042.md).
  - (1) Continental liquid oil-fired EGUs
  - (2) Non-continental liquid oil-fired EGUs,
  - (3) Limited-use liquid oil-fired EGUs, and
  - (4) **EGUs designed to burn solid oil-derived fuel.**
- (c) **IGCC units combusting either gasified coal or gasified solid oil-derived fuel.** For purposes of compliance, monitoring, recordkeeping, and reporting requirements in this subpart, IGCC units are subject in the same manner as coal-fired units and solid oil-derived fuel-fired units, unless otherwise indicated.

## Notes

### Amendments

[77 FR 9464, Feb. 16, 2012, as amended at 85 FR 20850, Apr. 15, 2020]

### Source

Source: 77 FR 9464, Feb. 16, 2012, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

### Amendments

[77 FR 9464, Feb. 16, 2012, as amended at 85 FR 20850, Apr. 15, 2020]