UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ___)* Crosstex Energy, L.P. - -------------------------------------------------------------------------------- (Name of Issuer) Senior Subordinated Series C Units - -------------------------------------------------------------------------------- (Title of Class of Securities) 22765U201 - -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2006 - -------------------------------------------------------------------------------- (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).
- ---------------------------- CUSIP No. 22765U201 - 13G Page 2 of 7 Pages - ---------------------------- - ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only) Tortoise Capital Advisors, L.L.C. (22-3875939) - ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ X ] (See Instructions) - ---------- --------------------------------------------------------------------- 3 SEC USE ONLY - ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - --------------------------- ----- ---------------------------------------------- - 5 SOLE VOTING POWER - 0 NUMBER OF - ----- ---------------------------------------------- SHARES - 6 SHARED VOTING POWER BENEFICIALLY - 712,760 (see Item 4) OWNED BY EACH - ----- ---------------------------------------------- REPORTING - 7 SOLE DISPOSITIVE POWER PERSON - 0 WITH: - ----- ---------------------------------------------- - 8 SHARED DISPOSITIVE POWER - 712,760 (see Item 4) - --------------------------- ----- ---------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 712,760 (see Item 4) - ---------- --------------------------------------------------------------------- 10 CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES (See Instructions) Not Applicable - ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.6% - ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) IA - ---------- ---------------------------------------------------------------------
- ---------------------------- CUSIP No. 22765U201 - 13G Page 3 of 7 Pages - ---------------------------- - ---------- --------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only) Tortoise Energy Infrastructure Corporation (20-0384222) - ---------- --------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ X ] (See Instructions) - ---------- --------------------------------------------------------------------- 3 SEC USE ONLY - ---------- --------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Maryland - --------------------------- ----- ---------------------------------------------- - 5 SOLE VOTING POWER - 0 NUMBER OF - ----- ---------------------------------------------- SHARES - 6 SHARED VOTING POWER BENEFICIALLY - 712,760 (see Item 4) OWNED BY EACH - ----- ---------------------------------------------- REPORTING - 7 SOLE DISPOSITIVE POWER PERSON - 0 WITH: - ----- ---------------------------------------------- - 8 SHARED DISPOSITIVE POWER - 712,760 (see Item 4) - --------------------------- ----- ---------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 712,760 (see Item 4) - ---------- --------------------------------------------------------------------- 10 CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES (See Instructions) Not Applicable - ---------- --------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.6% - ---------- --------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) IV - ---------- ---------------------------------------------------------------------
Page 4 of 7 Pages Item 1(a) Name of Issuer: Crosstex Energy, L.P. Item 1(b) Address of Issuer's Principal Executive Offices: 2501 Cedar Springs, Dallas, TX 75201 Item 2(a) Name of Persons Filing: This 13G is being jointly filed by Tortoise Capital Advisors, L.L.C., a Delaware limited liability company ("TCA"), and Tortoise Energy Infrastructure Corporation, a Maryland corporation ("TYG"). TCA and TYG have entered into an Agreement Regarding Joint Filing of 13G dated February 12, 2007 (the "Agreement") pursuant to which TCA and TYG have agreed to file this 13G jointly in accordance with the provisions of Rule 13d-1(k)(1) of the Securities Exchange Act of 1934, as amended (the "Act"). A copy of the Agreement is attached hereto as Exhibit A. Item 2(b) Address of Principal Business Office or, if None, Residence: The principal business address of both TCA and TYG is 10801 Mastin Blvd., Suite 222, Overland Park, Kansas 66210. Item 2(c) Citizenship: TCA is a Delaware limited liability company and TYG is a Maryland corporation. Item 2(d) Title of Class of Securities: Senior Subordinated Series C Units Item 2(e) CUSIP Number: 22765U201 Item 3 The Reporting Person is: TCA is an investment adviser in accordance with ss. 240.13d-1(b)(1)(ii)(E) and TYG is an investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). Item 4 Ownership: TCA acts as an investment advisor to TYG, a closed-end investment company registered under the Investment Company Act of 1940. TCA, by virtue of an Investment Advisory Agreement with TYG, has all investment and voting power over securities owned of record by TYG. However, despite its delegation of investment and voting power to TCA, TYG may be deemed to be the beneficial owner under Rule 13d-3 of the Act, of the securities it owns of record because it has the right to acquire investment and voting power through termination of the Investment Advisory Agreement. Thus, TCA and TYG have reported that they share voting power and dispositive power over the securities owned of record by TYG. TCA may be deemed the beneficial
Page 5 of 7 Pages owner of the securities covered by this statement under Rule 13d-3 of the Act. None of the securities listed below are owned of record by TCA, and TCA disclaims any beneficial interest in such securities. A. Tortoise Capital Advisors (a) Amount beneficially owned: 712,760 (b) Percent of class: 5.6% (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 0 (ii) Shared power to vote or direct the vote: 712,760 (iii) Sole power to dispose or to direct the disposition of: 0 (iv) Shared power to dispose or to direct the disposition of: 712,760 B. Tortoise Energy Infrastructure Corporation (a) Amount beneficially owned: 712,760 (b) Percent of class: 5.6% (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 0 (ii) Shared power to vote or direct the vote: 712,760 (iii) Sole power to dispose or to direct the disposition of: 0 (iv) Shared power to dispose or to direct the disposition of: 712,760 Item 5 Ownership of Five Percent or Less of a Class: Not Applicable Item 6 Ownership of More than Five Percent on Behalf of Another Person: TYG, which beneficially owns 5.6% of the outstanding Crosstex Energy, L.P. Senior Subordinated Series C Units has the right to receive all dividends from, and the proceeds from the sale of, the securities held in its account. Item 7 Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company: Not Applicable
Page 6 of 7 Pages Item 8 Identification and Classification of Members of the Group: Not Applicable Item 9 Notice of Dissolution of Group: Not Applicable 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 12, 2007 Tortoise Capital Advisors, L.L.C. By: /s/ Terry Matlack ---------------------------------------- Title: Managing Director Tortoise Energy Infrastructure Corporation By: /s/ Terry Matlack ------------------------------------------ Title: Chief Financial Officer
Page 7 of 7 Pages Exhibit A AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G In accordance with Rule 13d-1 (k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Senior Subordinated Series C Units of Crosstex Energy, L.P., and further agree that this agreement be included as an exhibit to such filings. In evidence whereof, the undersigned have caused this Agreement to be executed on their behalf this 12th day of February, 2007. Tortoise Capital Advisors, L.L.C. By: /s/ Terry Matlack -------------------------------------- Title: Managing Director Tortoise Energy Infrastructure Corporation By: /s/ Terry Matlack ------------------------------------------ Title: Chief Financial Officer