Exhibit 5.2

	525 W. Monroe Street
	Chicago, IL 60661-3693
	312.902.5200 tel
	312.902.1061 fax
	www.kattenlaw.com

March 22, 2021
Capstone Turbine Corporation
16640 Stagg Street

Van Nuys, California 91406

Re:      Capstone Turbine Corporation
               Securities Registered under Registration Statement on Form S-3

Ladies and Gentlemen:

We have acted as counsel to Capstone Turbine Corporation, a Delaware corporation (the “Company”), in connection with the offering of shares (the “Shares”) of the Company’s common stock, $0.01 par value, of the Company (“Common Stock”), and associated Series B Junior Participating Preferred Stock Purchase Rights (“Rights”) attached to the Common Stock, to be issued pursuant to the Rights Agreement between the Company and Broadridge Financial Solutions, Inc., as rights agent, dated as of May 6, 2019 (the “Rights Agreement”), having an aggregate offering price of up to $50,000,000, in accordance with the At The Market Offering Agreement, dated as of June 7, 2018, by and among the Company and H.C. Wainwright & Co., LLC, as amended by that certain letter agreement dated July 15, 2020 and that certain letter agreement dated March 19, 2021 (collectively, the “Sales Agency Agreement”), pursuant to a prospectus (the “Prospectus”) that forms a part of the Company’s Registration Statement on Form S-3 (the “Registration Statement”), filed by the Company on March 22, 2021 with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Act”). This opinion is being furnished in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Act.

In connection with this opinion, we have relied as to matters of fact, without investigation, upon certificates of public officials and officers of the Company. We have also examined originals or copies, certified or otherwise identified to our satisfaction, of such instruments, documents and records as we have deemed relevant and necessary to examine for the purpose of this opinion, including (i) the Registration Statement, (ii) the Prospectus, (iii) the Company’s Second Amended and Restated Certificate of Incorporation, as amended, as currently in effect, (iv) the Company’s Fourth Amended and Restated Bylaws, as currently in effect, (v) the Rights Agreement, as currently in effect, (vi) records of proceedings and actions of the Company’s Board of Directors (the “Board of Directors”) relating to the Registration Statement and related matters, and (vii) the Sales Agency Agreement.

In connection with this opinion, we have assumed at all applicable times the legal capacity of all natural persons, the accuracy and completeness of all documents and records that we have reviewed, the genuineness of all signatures, the due authority of the parties signing such documents, the authenticity of the documents submitted to us as originals and the conformity to authentic original documents of all documents submitted to us as certified, conformed or reproduced copies. With respect to documents executed or to be executed by parties other than the Company, we have assumed that such parties had or will have the power and authority, corporate or other, to enter into and perform all obligations thereunder and have also assumed the valid existence of such parties, the due authorization by all requisite action, corporate or other, and execution and delivery by such parties of such documents and the validity and binding effect thereof on such parties. We have also assumed that any specific sales of the Shares pursuant to the Sales Agency Agreement will be duly authorized by the Board of Directors, a duly authorized committee thereof or a duly authorized officer of the Company.

KATTEN MUCHIN ROSENMAN LLP

CENTURY      CITY     CHARLOTTE   CHICAGO   DALLAS   HOUSTON   LOS   ANGELES

NEW    YORK   ORANGE   COUNTY    SHANGHAI   WASHINGTON, DC

A limited liability partnership including professional corporations

LONDON: KATTEN MUCHIN ROSENMAN UK LLP

Based upon and subject to the foregoing, it is our opinion that (i) the Shares and the associated Rights have been duly authorized for issuance, and (ii) when issued and delivered in accordance with the Sales Agency Agreement against payment of consideration as contemplated therein, (a) the Shares and the associated Rights (so long as they have not expired or been redeemed or terminated prior thereto) will be validly issued and (b) the Shares will be fully paid and non-assessable.

Our opinions expressed above are limited to the General Corporation Law of the State of Delaware, and we do not express any opinion herein concerning any other law. In addition, we express no opinion herein concerning any statutes, ordinances, administrative decisions, rules or regulations of any county, town, municipality or special political subdivision (whether created or enabled through legislative action at the federal, state or regional level). This opinion is given as of the date hereof and as of the effective date of the Registration Statement and we assume no obligation to advise you of changes that may thereafter be brought to our attention.

We hereby consent to the reference to our firm under the caption “Legal Matters” in the Prospectus, which forms a part of the Registration Statement and to the filing of this opinion with the Commission as an exhibit to the Registration Statement. In giving this consent, we do not thereby admit that we are experts within the meaning of Section 11 of the Act or included in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission.