UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Advanced Energy Industries, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

007973 10 0

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

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

o Rule 13d-1(b)
o Rule 13d-1(c)
þ Rule 13d-1(d)

     The information required on 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 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.		007973 10 0	13G	Page		2		of		7 Pages

* SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No.		007973 10 0	13G	Page		3		of		7 Pages

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No.		007973 10 0	13G	Page		4		of		7 Pages

*SEE INSTRUCTIONS BEFORE FILLING OUT!

Item 1(a). Name of Issuer

Advanced Energy Industries, Inc.

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

1625 Sharp Point Drive
Fort Collins, CO 80525

Item 2(a). Names of Person Filing

Douglas S. Schatz & Jill E. Schatz Family Trust
Douglas S. Schatz
Jill E. Schatz

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

PO Box 481
Fort Collins, CO 80522

Item 2(c). Citizenship

Douglas S. Schatz & Jill E. Schatz Family Trust — Wyoming
Douglas S. Schatz — United States
Jill E. Schatz — United States

Item 2(d). Title of Class of Securities

Common Stock, $0.001 par value

Item 2(e). CUSIP Number

007973 10 0

Item 3.		If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b) or (c), check whether the person filing is a :

Not applicable

Item 4.		Ownership

	(a)		Amount Beneficially Owned:
			Douglas S. Schatz & Jill E. Schatz Family Trust — 9,290,995 shares
			Douglas S. Schatz — 9,290,995 shares
			Jill E. Schatz — 9,290,995 shares
	(b)		Percent of Class:
			Douglas S. Schatz & Jill E. Schatz Family Trust — 20.5 %
			Douglas S. Schatz — 20.5 %
			Jill E. Schatz — 20.5 %
	(c)		Number of shares as to which such person has:
			Douglas S. Schatz & Jill E. Schatz Family Trust and Douglas S. Schatz:

(i) sole power to vote or to direct the vote:			9,080,995
(ii) shared power to vote or to direct the vote:			210,000	**
(iii) sole power to dispose or to direct the disposition of:			9,080,995
(iv) shared power to dispose or to direct the disposition of:			210,000	**

Jill E. Schatz:

(i) sole power to vote or to direct the vote: 9,080,995
(ii) shared power to vote or to direct the vote:			210,000	**
(iii) sole power to dispose or to direct the disposition of:			9,080,995
(iv) shared power to dispose or to direct the disposition of:			210,000	**

respect to the charitable foundations’s 210,000 shares. Mr. and Mrs. Schatz disclaim beneficial ownership of the shares held by the charitable foundation.

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

Not applicable

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

Not applicable

Item 8.		Identification and Classification of Members of the Group

Not applicable

Item 9.		Notice of Dissolution of Group

Not applicable

Item 10.		Certification

Not applicable

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.