SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 13G*

(Rule 13d-102)

INFORMATION TO BE INCLUDED

IN STATEMENTS FILED PURSUANT

TO RULES 13d-1(b), (c), AND

(d) AND AMENDMENTS THERETO

FILED PURSUANT TO RULE 13d-2

(AMENDMENT NO. THREE  )*

 NuStar Energy L.P.

(Name of Issuer)

Common stock representing limited partner interests

(Title of Class of Securities)

67058H102

(CUSIP Number)

December 31, 2022

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[x] Rule 13d-1(b)

☐ Rule 13d-1(c)

☐ Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

1	NAMES OF REPORTING PERSONS
	Tortoise Capital Advisors, L.L.C.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a)☐
	(b)[x]
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER
			96,942
		6	SHARED VOTING POWER
			3,671,327 (see Item 4)
		7	SOLE DISPOSITIVE POWER
			96,942
		8	SHARED DISPOSITIVE POWER
			3,934,090 (see Item 4)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	4,031,032 (see Item 4)
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
	3.7%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IA

Item 1(a). Name of Issuer:

 NuStar Energy L.P.

Item 1(b). Address of Issuer's Principal Executive Offices:

 19003 IH-10 West San Antonio, TX 78257

Item 2(a). Name of Person Filing:

 Tortoise Capital Advisors, L.L.C.

Item 2(b). Address of Principal Business Office or, if none, Residence:

 The principal business address is 6363 College Boulevard, Suite 100A, Overland Park, KS 66211

Item 2(c). Citizenship:

 TCA is a Delaware limited liability company

Item 2(d). Title of Class of Securities:

 Common units

Item 2(e). CUSIP Number:

 67058H102

Item 3. If This Statement Is Filed Pursuant to Sections 240.13d-1(b) or

240.13d-2(b) or (c), Check Whether the Person Filing Is a(n):

(a) ☐ Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);

(b) ☐ Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);

(c) ☐ Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c);

(d) ☐ Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e) [x] Investment adviser in accordance with Section 240.13d-1(b)(1)(ii)(E);

(f) ☐ Employee benefit plan or endowment fund in accordance with Section 240.13d-1(b)(1)(ii)(F);

(g) ☐ Parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G);

(h) ☐ Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) ☐ Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) ☐ A non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J);

(k) ☐ Group, in accordance with Section 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____________________________ .

Item 4. Ownership.

TCA acts as an investment adviser to certain investment companies registered under the Investment Company Act of 1940. TCA, by virtue of investment advisory agreements with

these investment companies, has all investment and voting power over securities owned of record by these investment companies. However, despite their delegation of investment and

voting power to TCA, these investment companies may be deemed to be the beneficial owners under Rule 13d-3 of the Act, of the securities they own of record because they have the

right to acquire investment and voting power through termination of their investment advisory agreement with TCA. Thus, TCA has reported that it shares voting power and

dispositive power over the securities owned of record by these investment companies. TCA also acts as an investment adviser to certain managed accounts. Under contractual

agreements with these managed account clients, TCA, with respect to the securities held in these client accounts, has voting and/or investment power with respect to these client

accounts. TCA has reported that it shares voting and/or investment power over the securities held by these client managed accounts despite a delegation of voting and/or investment

power to TCA because the clients have the right to acquire investment and voting power through termination of their agreements with TCA. TCA may be deemed the beneficial owner

of the securities covered by this statement under Rule 13d-3 of the Act that are held by its clients.

(a) Amount beneficially owned: 4,031,032

(b) Percent of class: 3.7%

(c) Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:
96,942

(ii) Shared power to vote or to direct the vote: 3,671,327

(iii) Sole power to dispose or to direct the disposition of: 96,942

(iv) Shared power to dispose or to direct the disposition of: 3,934,090

Item 5. Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [x].

Item 6. Ownership of More Than Five Percent on Behalf of Another Person.

N/A
 

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.

 N/A

Item 8. Identification and Classification of Members of the Group.

 N/A

Item 9. Notice of Dissolution of Group.

 N/A

Item 10. Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated:February 13, 2023

TORTOISE CAPITAL ADVISORS L.L.C.
By:	/s/ Diane Bono
	Name:  Diane Bono
	Title:   Managing Director and Chief Compliance Officer