The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

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OMB Number: 3235-0006
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Report for the Calendar Year or Quarter Ended: 12-31-2023
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Flatrock Energy Advisors LLC
Address: 1826 N. LOOP 1604 W., STE 200
SAN ANTONIO, TX  78248
Form 13F File Number: 028-17752
CRD Number (if applicable):
SEC File Number (if applicable):

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: William R. Lemmons, Jr.
Title: Authorized Signatory
Phone: 210-494-6777
Signature, Place, and Date of Signing:
William R. Lemmons, Jr. San AntonioTX 02-07-2024
[Signature] [City, State] [Date]
Flatrock Energy Advisors LLC ("Flatrock Advisors") is a member of EnCap Flatrock Midstream Fund III General Partner, LLC, which is the sole general partner of EnCap Flatrock Midstream Fund IV G.P., L.P., which is the sole general partner of EnCap Flatrock Midstream Fund IV, L.P. Flatrock Advisers is a member of EnCap Flatrock Midstream Fund III General Partner, LLC, which is the sole general partner of EnCap Flatrock Midstream Fund III G.P., L.P., which is the sole general partner of EnCap Flatrock Midstream Fund III, L.P. Therefore, Flatrock Advisors and its affiliates may be deemed to share the right to direct the disposition of the securities held by EnCap Flatrock Midstream Fund IV, L.P. and EnCap Flatrock Midstream Fund III, L.P.
Report Type (Check only one.):
   13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
X 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
   13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Name Form 13F File No. CRD No. (if applicable) SEC File No. (if applicable) CIK
EnCap Flatrock Midstream Fund III, L.P. 028-23358      
EnCap Flatrock Midstream Fund IV, L.P. 028-23357