CyrusOne Northern Virginia Data Center - Shaw Road
Loudoun Co., Virginia
QA status Machine-extractedRelease dated July 29, 2026
EVIDENCE NOTE
What the public record says
A machine-extracted candidate of equipment groups and permit limits stated in Virginia DEQ permit 74109-2, with one-based PDF page citations. Permitted terms do not establish actual operation or emissions.
The source confirms the document and its stated fields. This profile does not infer actual emissions, compliance history, operating status, facility capacity or environmental impact where those facts are not established by the cited document.
How to read the status
Issued means the agency granted the permit subject to its conditions. It does not mean every permitted unit is operating, that maximum permitted emissions occur, or that later amendments do not exist.
MACHINE-EXTRACTED CANDIDATE
Equipment and limits, kept separate from actual use.
These page-cited rows are machine-extracted and still require a second manual review. Verify every reused value against the linked official PDF. Page numbers refer to the one-based position in the linked PDF. Blank values are not zero.
Permitted equipment
2 document-defined equipment groups. Counts and per-unit ratings are transcribed; combined capacity is not calculated.
Reference
Equipment / model
Count / rating
Fuel / controls
Stated operating field
Source
emergency engine generator setMTU
11 units2250 or 1250 kW each
diesel fuel oil—
See operating-scope table—
p. 4 ↗Machine-extracted from explicit permit prose: Equipment Rated Delegated Federal Original Description Capacity Requirements Permit Date GEN-A, GEN-B, Eleven (11)MTU, 2,250 ekW None 10/13/2016 GEN-C, GEN-D, 16V4000G83 (generator GEN-E, GEN-F, emergency diesel power GEN-C, CEN-H, engine-generator output) GEN-J, GEN-K, and sets 3,351 bhp GEN-L (per engine) GEN-HOUSE One(1)MTU, 1,250 ekW None 10/
emergency engine generator set—
13 units1838 bhp each
diesel fuel oil—
See operating-scope table—
p. 4 ↗Machine-extracted from explicit permit prose: 13/2016 18V2000G76S (generator emergency diesel power engine-generator set output) 1,838bhp Specifications included in the above table are for informational purposes only
Operating scope
Authorized hours, time windows or an explicit finding that no numeric annual-hour cap was located in the reviewed sections.
Reference
Limit
Basis
Source
200 hours/year
tory that may require ISO action. c. For periodic maintenance, testing (including readiness testing), and operational training. (9 VAC 5-80-1180) 6. Operating Hours - The emergency diesel engine-generator sets shall not operate more than a combined total of 4,200 hours per year, and no single emergency diesel engine- generator set shall operate more than 500 hours per year, calculated monthly as the sum of each consecutive 12-month period. Compliance for the consecutive 12 month period shall bMachine-extracted normative operating-hours statement; second review pending.
ng), and operational training. (9 VAC 5-80-1180) 6. Operating Hours - The emergency diesel engine-generator sets shall not operate more than a combined total of 4,200 hours per year, and no single emergency diesel engine- generator set shall operate more than 500 hours per year, calculated monthly as the sum of each consecutive 12-month period. Compliance for the consecutive 12 month period shall be demonstrated monthly by adding the total operating hours for the most recently completed calendMachine-extracted normative operating-hours statement; second review pending.
2 pollutant, unit-group and limit rows. These are permit terms, not measured or actual emissions.
Inspect 2 transcribed limit rows
Reference
Pollutant
Limit
Basis / scope
Source
visible emissions—
5 percent opacityvisible
——
p. 8 ↗Machine-extracted from a page line in an older official PDF; literal context: (9 VAC 5-80-1180 and 9 VAC 5-50-260) 11. Visible Emission Limit - Visible emissions from each emergency diesel engine- generator exhaust shall not exceed 5% opacity except during one 6-minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by EPA
visible emissions—
10 percent opacityvisible
——
p. 8 ↗Machine-extracted from a page line in an older official PDF; literal context: 11. Visible Emission Limit - Visible emissions from each emergency diesel engine- generator exhaust shall not exceed 5% opacity except during one 6-minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by EPA Method 9 (reference 40 CFR 60, Appendix A). This condition applies at all times except
DOCUMENT HISTORY
What this document says it changes
permit to construct and operate
No superseded-document date is asserted beyond the cited source wording.