UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.)

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Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[  ] Preliminary Proxy Statement.

[  ]Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

[X] Definitive Proxy Statement

[  ] Definitive Additional Materials.

[  ] Soliciting Material Pursuant to §240.14a-12

TORTOISE ENERGY INFRASTRUCTURE CORPORATION

TORTOISE POWER AND ENERGY INFRASTRUCTURE FUND, INC.

TORTOISE MLPMIDSTREAM ENERGY FUND, INC.

TORTOISE PIPELINE & ENERGY FUND, INC.

TORTOISE ENERGY INDEPENDENCE FUND, INC.

TORTOISE ESSENTIAL ASSETS INCOME TERM FUND

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

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TORTOISE ENERGY INFRASTRUCTURE CORPORATION
TORTOISE POWER AND ENERGY INFRASTRUCTURE FUND, INC.
TORTOISE MLPMIDSTREAM ENERGY FUND, INC.
TORTOISE PIPELINE & ENERGY FUND, INC.
TORTOISE ENERGY INDEPENDENCE FUND, INC.
TORTOISE ESSENTIAL ASSETS INCOME TERM FUND

11550 Ash Street, Suite 3005100 W. 115th Place
Leawood, Kansas 66211

April 4, 2018June 1, 2021

Dear Fellow Stockholder:

You are cordially invited to attend the combined annual meeting of stockholders of each of Tortoise Energy Infrastructure Corporation (“TYG”), Tortoise Power and Energy Infrastructure Fund, Inc. (“TPZ”),Tortoise MLPMidstream Energy Fund, Inc. (“NTG”),Tortoise Pipeline & Energy Fund, Inc. (“TTP”),andTortoise Energy Independence Fund, Inc. (“NDP”) (eachand Tortoise Essential Assets Income Term Fund (“TEAF”)(each a “Company” and collectively, the “Companies”) on Friday, May 18, 2018Wednesday, July 14, 2021 at 10:00 a.m., Central Time at 11550 Ash4801Main Street, Suite 300, Leawood,1000, Kansas 66211.City, Missouri 64112.

At the meeting, you will be asked to (i) elect two directors of the Company, (ii) ratify the selection of Ernst & Young LLP as the independent registered public accounting firm of the Company for its fiscal year ending November 30, 2018,2021, and (iii) consider and take action upon such other business as may properly come before the meeting, including the adjournment or postponement thereof.

Enclosed with this letter are answers to questions you may have about the proposals, the formal notice of the meeting, the Companies’ combined proxy statement, which gives detailed information about the proposals and why each Company’s Board of Directors recommends that you vote to approve each of the Company’s proposals, and the actual proxy for you to sign and return. If you have any questions about the enclosed proxy or need any assistance in voting your shares, please call 1-866-362-9331.

Your vote is important. Please vote your shares via the internet or by telephone, or complete, sign and date the enclosed proxy card (your ballot) and mail it in the postage-paid envelope included in this package.

Although the Companies intend to hold the annual meeting in person, we are actively monitoring developments surrounding the coronavirus (COVID-19) pandemic. We are sensitive to the public health and travel concerns our

stockholders may have and the recommendations and protocols that federal, state and local governments may impose. In the event the Companies determine, in their sole discretion, that it is not possible or advisable to hold the annual meeting in person, we will announce alternative meeting arrangements, which may include holding the meeting by means of remote communication (i.e., virtual meeting), or holding a “hybrid” meeting, meaning that the meeting would be held in person with concurrent participation by remote means for stockholders who are not physically present. We will announce any such change via press release and posting on the closed-end fund section of the website of the Companies’ investment adviser at www.tortoiseecofin.com, as well as the filing of additional proxy materials with the Securities and Exchange Commission (the “SEC”), as promptly as practicable. If we conduct the annual meeting as a virtual or hybrid meeting, you will need the control number included on your proxy card in order to access and participate in the meeting. In addition, in the event it is not possible or advisable to hold the annual meeting in person on July 14, 2021, the annual meeting may be adjourned by the chairperson of the annual meeting to a date not more than 120 after the record date without notice other than announcement at the annual meeting. If you are planning to attend the annual meeting, please check the website prior to the meeting date for updated information.

TORTOISE ENERGY INFRASTRUCTURE CORPORATION
TORTOISE POWER AND ENERGY INFRASTRUCTURE FUND, INC.
TORTOISE MLPMIDSTREAM ENERGY FUND, INC.
TORTOISE PIPELINE & ENERGY FUND, INC.
TORTOISE ENERGY INDEPENDENCE FUND, INC.
TORTOISE ESSENTIAL ASSETS INCOME TERM FUND

ANSWERS TO SOME IMPORTANT QUESTIONS

A.    This proxy contains three proposals for each Company to: (i) elect two directors to serve until the 2021 Annual Stockholder Meeting; (ii) ratify Ernst & Young LLP as the Company’s independent registered public accounting firm; and (iii) consider and take action upon such other business as may properly come before the meeting, including the adjournment or postponement thereof.

Q.    HOW DOES THE BOARD OF DIRECTORS SUGGEST THAT I VOTE?

A.    The Board of Directors of each Company unanimously recommends that you vote “FOR” all proposals on the enclosed proxy card.

Q.    HOW CAN I VOTE?

A.    Voting is quick and easy. You may vote your shares via the internet, by telephone (for internet and telephone voting, please follow the instructions on the proxy ballot), or by simply completing and signing the enclosed proxy ballot, and mailing it in the postage-paid envelope included in this package. You may also vote in person if you are able to attend the meeting. However, even if you plan to attend the meeting, we urge you to cast your vote early. That will ensure your vote is counted should your plans change.

This information summarizes information that is included in more
detail in the Proxy Statement. We urge you to
read the entire Proxy Statement carefully.

If you have questions, call 1-866-362-9331.

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

NOTICE IS HEREBY GIVEN that the combined Annual Meeting of Stockholders of Tortoise Energy Infrastructure Corporation, Tortoise Power and Energy Infrastructure Fund, Inc., Tortoise MLPMidstream Energy Fund, Inc., Tortoise Pipeline & Energy Fund, Inc. and Tortoise Energy Independence Fund, Inc., each a Maryland corporation, and Tortoise Essential Assets Income Term Fund, a Maryland statutory trust (each a “Company” and, collectively, the “Companies”), will be held on Friday, May 18, 2018Wednesday, July 14, 2021 at 10:00 a.m. Central Time at 11550 Ash4801 Main Street, Suite 300, Leawood,1000, Kansas 66211City, Missouri 64112 for the following purposes:

The foregoing items of business are more fully described in the Proxy Statement accompanying this Notice.

Stockholders of record as of the close of business on March 13, 2018May 18, 2021 are entitled to notice of and to vote at the meeting (or any adjournment or postponement of the meeting).

April 4, 2018June 1, 2021
Leawood, Kansas

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All stockholders are cordially invited to attend the meeting in person. Whether or not you expect to attend the meeting, please vote your shares via the internet, by telephone or by completing, dating, signing and returning the enclosed proxy as promptly as possible in order to ensure your representation at the meeting. If you choose to vote using the enclosed proxy, a return envelope (which postage is prepaid if mailed in the United States) is enclosed for that purpose. Even if you have given your proxy, you may still vote in person if you attendby attending and voting at the meeting. Please note, however, that if your shares are held of record by a broker, bank or other nominee and you wish to vote at the meeting, you must obtain from the record holder a proxy issued in your name.

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TORTOISE ENERGY INFRASTRUCTURE CORPORATION
TORTOISE POWER AND ENERGY INFRASTRUCTURE FUND, INC.
TORTOISE MLPMIDTREAM ENERGY FUND, INC.
TORTOISE PIPELINE & ENERGY FUND, INC.
TORTOISE ENERGY INDEPENDENCE FUND, INC.
TORTOISE ESSENTIAL ASSETS INCOME TERM FUND

11550 Ash Street, Suite 3005100 W. 115th Place
Leawood, Kansas 66211
1-866-362-9331

COMBINED PROXY STATEMENT

ANNUAL MEETING OF STOCKHOLDERS

May 18, 2018
July 14, 2021

This combined proxy statement is being sent to you by the Boards of Directors of each of Tortoise Energy Infrastructure Corporation (“TYG”), Tortoise Power and Energy Infrastructure Fund, Inc. (“TPZ”), Tortoise MLPMidstream Energy Fund, Inc. (“NTG”),Tortoise Pipeline & Energy Fund, Inc. (“TTP”),and Tortoise Energy Independence Fund, Inc. (“NDP”) (eachand Tortoise Essential Assets Income Term Fund (“TEAF”) (each a “Company” and collectively, the “Companies”). The Board of Directors of each Company is asking you to complete and return the enclosed proxy, permitting your shares of the Company to be voted at the annual meeting of stockholders called to be held on May 18, 2018.July 14, 2021. The Board of Directors of each Company has fixed the close of business on March 13, 2018May 18, 2021 as the record date (the “record date”) for the determination of stockholders entitled to notice of and to vote at the meeting and at any adjournment thereof as set forth in this combined proxy statement. This combined proxy statement and the enclosed proxy are first being mailed to stockholders on or about April 4, 2018.June 1, 2021.

Although the Companies intend to hold the annual meeting in person, we are actively monitoring developments surrounding the coronavirus (COVID-19) pandemic. We are sensitive to the public health and travel concerns our stockholders may have and the recommendations and protocols that federal, state and local governments may impose. In the event the Companies determine, in their sole discretion, that it is not possible or advisable to hold the annual meeting in person, we will announce alternative meeting arrangements, which may include holding the meeting by means of remote communication (i.e., virtual meeting), or holding a “hybrid” meeting, meaning that the meeting would be held in person with concurrent participation by remote means for stockholders who are not physically present. We will announce any such change via press release and posting on the closed-end fund section of the website of the Companies’ investment adviser at www.tortoiseecofin.com, as well as the filing of additional proxy materials with the SEC, as promptly as practicable. If we conduct the annual meeting as a virtual or hybrid meeting, you will need the control number included

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on your proxy card in order to access and participate in the meeting. In addition, in the event it is not possible or advisable to hold the annual meeting in person on July 14, 2021, the annual meeting may be adjourned by the chairperson of the annual meeting to a date not more than 120 after the record date without notice other than announcement at the annual meeting. If you are planning to attend the annual meeting, please check the website prior to the meeting date for updated information.

Each Company’s annual report can be accessed through its link on the closed-end fund section of its investment adviser’s website (www.tortoiseadvisors.com)(www.tortoiseecofin.com) or on the Securities and Exchange Commission’s (“SEC”) website (www.sec.gov).

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be Held on May 18, 2018:July 14, 2021: This combined proxy statement is available on the internet at http:https://closedendfunds.tortoiseadvisors.com/cef.tortoiseecofin.com/annual-proxy-information/. On this site, you will be able to access the proxy statement for the annual meeting and any amendments or supplements to the foregoing material required to be furnished to stockholders.

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This combined proxy statement sets forth the information that each Company’s stockholders should know in order to evaluate each of the following proposals. The following table presents a summary of the proposals for each Company and the class of stockholders of the Company being solicited with respect to each proposal.

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PROPOSAL ONE

ELECTION OF TWO DIRECTORSONE DIRECTOR

The Board of Directors of each Company unanimously nominated Rand C. Berney and Jennifer Paquette following a recommendation by the Nominating and Governance Committee of each of TYG, TPZ, NTG, TTP, NDP and NDPTEAF for election as directors at the combined annual meeting of stockholders of the Companies. Mr. Berney isand Ms. Paquette are currently a directordirectors of each Company. Ms. Paquette has been nominated by the Board of Directors of each Company to fill the seat that will be vacated upon the retirement of Charles E. Heath effective as of the annual meeting. Each of Mr. Berney and Ms. Paquette has consented to be named in this proxy statement and has agreed to serve if elected. The Companies have no reason to believe that either Mr. Berney or Ms. Paquette will be unavailable to serve.

The persons named on the accompanying proxy card intend to vote at the meeting (unless otherwise directed) “FOR” the election of Mr. Berney and Ms. Paquette as directors of each Company. Currently, each Company has five directors. In accordance with each Company’s Articles of Incorporation (or in the case of TEAF, its Declaration of Trust), its Board of Directors is divided into three classes of approximately equal size. The terms of the directors of the different classes are staggered. The term of each of H. Kevin Birzer and Alexandra A. Herger expires on the date of the 20192022 annual meeting of stockholders of each Company and the term of Conrad S. Ciccotello expires on the date of the 20202023 annual meeting of stockholders of each Company. Pursuant to the terms of each of TYG’s, NTG’s and TTP’s preferred shares, the preferred stockholders of each of those Companies have the exclusive right to elect two directors to their Company’s Board. The Board of each of TYG, NTG and TTP has designated Mr. Birzer and Ms. Paquette as the directors the preferred stockholders of that Company shall have the right to elect.

Holders of common shares and preferred shares of each of TYG, NTG and TTP will vote as a single class on the election of Mr. Berney as a director of each Company and holders of preferred shares of each of TYG, NTG and TTP will vote as a class on the election of Ms. Paquette as a director of each Company.Paquette. Holders of common shares of each of TPZ, NDP and NDPTEAF will vote as a class on the election of Mr. Berney and Ms. Paquette as directors of each Company. Stockholders do not have cumulative voting rights.

With respect to each Company, if elected, Mr. Berney and Ms. Paquette will hold office until the 20212024 annual meeting of stockholders of each Company and until their successors are duly elected and qualified. If either Mr. Berney or Ms. Paquette is unable to serve because of an event not now anticipated, the persons named as proxies may vote for another person designated by the Company’s Board of Directors.

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The following table sets forth each Board member’s name, age and address; position(s) with the Companies and length of time served; principal occupation during the past five years; the number of companies in the Fund Complex that

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each Board member oversees and other public company directorships held by each Board member. Unless otherwise indicated, the address of each director is 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211. The 1940 Act requires the term “Fund Complex” to be defined to include registered investment companies advised by the Company’s investment adviser, Tortoise Capital Advisors, L.L.C. (the “Adviser”). As of February 28, 2018,April 30, 2021, for each Director, the Fund Complex included TYG, TPZ, NTG, TTP, NDP, TEAF and three open-endfor Mr. Ciccotello, the Fund Complex also includes Ecofin Tax-Advantaged Social Impact Fund, Inc. (“TSIFX”) whose investment adviser is the Adviser and on whose board Mr. Ciccotello serves. The Adviser also serves as the investment adviser to four open end mutual funds.

Nominees For Director Who Are Independent:

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Remaining Directors Who Are Independent:

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Remaining Directors Who Are Interested Persons:

In connection with the change in control of the Adviser on January 31, 2018, Terry C. Matlack resigned effective as of that date from the Board of Directors of each Company.

In accordance with each Company’s Bylaws, Charles E. Heath will not be standing for re-election at the Annual Meeting and his term will expire at the Annual Meeting.

In addition to the experience provided in the table above, each director possesses the following qualifications, attributes and skills, each of which factored into the conclusion to invite them to join the Company’s Board of Directors: Mr. Ciccotello, experience as a college professor, a Ph.D. in finance and expertise in energy infrastructure MLPs; Mr. Berney, experience as a college professor, executive leadership and business experience; Mr. Heath and Ms. Herger, executive leadership and business experience; Ms. Paquette, investment management experience as a chief investment officer of a state public employees’ retirement association; and Mr. Birzer, investment management experience as an executive, portfolio manager and leadership roles with the Adviser.

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Other attributes and qualifications considered for each director in connection with their selection to join the Board of Directors of each Company were their character and integrity and their willingness and ability to serve and commit

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the time necessary to perform the duties of a director for all of the closed-end funds in the Tortoise Fund Complex.Companies. In addition, as to each director other than Mr. Birzer, his or her status as an Independent Director; and, as to Mr. Birzer, his roles with the Adviser were an important factor in his selection as a director. No experience, qualification, attribute or skill was by itself controlling.

Mr. Birzer serves as Chairman of the Board of Directors of each Company. Mr. Birzer is an “interested person” of the Companies within the meaning of the 1940 Act. The appointment of Mr. Birzer as Chairman reflects each Board of Directors’ belief that his experience, familiarity with each Company’s day-to-day operations and access to individuals with responsibility for each Company’s management and operations provides the Board of Directors with insight into each Company’s business and activities and, with his access to appropriate administrative support, facilitates the efficient development of meeting agendas that address each Company’s business, legal and other needs and the orderly conduct of meetings of the Board of Directors. Mr. Ciccotello serves as Lead Independent Director. The Lead Independent Director will, among other things, chair executive sessions of the four directors who are Independent Directors, serve as a spokesperson for the Independent Directors and serve as a liaison between the Independent Directors and each Company’s management. The Independent Directors will regularly meet outside the presence of management and are advised by independent legal counsel. The Board of Directors also has determined that its leadership structure, as described above, is appropriate in light of each Company’s size and complexity, the number of Independent Directors and the Board of Directors’ general oversight responsibility. The Board of Directors also believes that its leadership structure not only facilitates the orderly and efficient flow of information to the Independent Directors from management, but also enhances the independent and orderly exercise of its responsibilities.

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Information About Executive Officers

Mr. Birzer is the Chairman of the Board of each Company. The preceding tables give more information about Mr. Birzer. The following table sets forth each other executive officer’s name, age and address; position(s) held with the Company and length of time served; principal occupation during the past five years; the number of portfolios in the Fund Complex overseen by each officer and other public company directorships held by each officer. Unless otherwise indicated, the address of each officer is 11550 Ash Street, Suite 300,5100 W. 115^th Place, Leawood, Kansas 66211. Each officer serves until his successor is elected and qualified or until his resignation or removal. As employees of the Adviser, each of the following officers are “interested persons” of the Company, as that term is defined in Section 2(a)(19) of the 1940 Act.

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(1)	As of April 30, 2021, for each executive officer, the Fund Complex included TYG, TPZ, NTG, TTP, NDP and TEAF and for Mr. Adams and Mses. Bono and Gopal, the Fund Complex also includes TSIFX, for which they serve as officers.

Committees of the Board of Directors of each Company

Each Company’s Board of Directors currently has four standing committees: (i) the Executive Committee; (ii) the Audit and Valuation Committee; (iii) the Nominating and Governance Committee; and (iv) the Compliance Committee. Currently, all of the non-interested directors, Messrs. Ciccotello and Berney and HeathMses. Herger and Ms. Herger,Paquette, are the only members of each of these committees, except for the Executive Committee, for each Company. Each Company’s Executive Committee currently consists of Mr. Birzer and Mr. Ciccotello. Subject to her election, Ms. Paquette will serve on each of these committees, except for the Executive Committee.

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related to corporate governance issues and develops and recommends to the Board corporate governance guidelines and procedures, to the extent necessary or desirable; (iv) has the sole authority to retain and terminate any search firm used to identify director candidates and to approve the search firm’s fees and other retention terms, though it has yet to exercise such authority; and (v) may not delegate its authority. The Nominating and Governance Committee will consider stockholder recommendations for nominees for membership to the Board so long as such recommendations are made in accordance with the Company’s Bylaws. Nominees recommended by stockholders in compliance with the Bylaws of the Company will be evaluated on the same basis as other nominees considered by the Committee. Stockholders should see “Stockholder Proposals and Nominations for the 2018 Annual Meeting” below for information relating to the submission by stockholders of nominees and matters for consideration at a meeting of the Company’s stockholders. Each Company’s Bylaws of the Company will be evaluated on the same basis as other nominees considered by the Committee. Stockholders should see “Stockholder Proposals and Nominations for the 2022 Annual Meeting” below for information relating to the submission by stockholders of nominees and matters for consideration at a meeting of the Company’s stockholders. The Bylaws of each Company (not including TEAF) require all nominees for directors, at the time of nomination, (1) to be at least 21 and less than 75 years of age and have substantial expertise, experience or relationships relevant to the business of the Company, or (2) to be a current director of the Company that has not reached 75 years of age. The Committee has the sole discretion to determine if an individual satisfies the foregoing qualifications. The Committee also considers the broad background of each individual nominee for director, including how such individual would impact the diversity of the Board, but does not have a formal policy regarding consideration of diversity in identifying nominees for director.

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laws, rules and regulations; monitors compliance with the Company’s Code of Ethics; and handles other matters as the Board or committee chair deems appropriate.

The Board of Directors’ role in the Company’s risk oversight reflects its responsibility under applicable state law to oversee generally, rather than to manage, the Company’s operations. In line with this oversight responsibility, the Board of Directors will receive reports and make inquiry at its regular meetings and as needed regarding the nature and extent of significant risks (including investment, compliance and valuation risks) that potentially could have a materially adverse impact on the Company’s business operations, investment performance or reputation, but relies upon the Company’s management to assist it in identifying and understanding the nature and extent of such risks

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and determining whether, and to what extent, such risks may be eliminated or mitigated. In addition to reports and other information received from the Company’s management regarding its investment program and activities, the Board of Directors as part of its risk oversight efforts will meet at its regular meetings and as needed with the Adviser’s Chief Compliance Officer to discuss, among other things, risk issues and issues regarding the Company’s policies, procedures and controls. The Board of Directors may be assisted in performing aspects of its role in risk oversight by the Audit and Valuation Committee and such other standing or special committees as may be established from time to time. For example, the Audit and Valuation Committee will regularly meet with the Company’s independent public accounting firm to review, among other things, reports on internal controls for financial reporting.

The Board of Directors believes that not all risks that may affect the Company can be identified, that it may not be practical or cost-effective to eliminate or mitigate certain risks, that it may be necessary to bear certain risks (such as investment-related risks) to achieve the Company’s goals and objectives, and that the processes, procedures and controls employed to address certain risks may be limited in their effectiveness. Moreover, reports received by the directors as to risk management matters are typically summaries of relevant information and may be inaccurate or incomplete. As a result of the foregoing and other factors, the risk management oversight of the Board of Directors is subject to substantial limitations.

None of the Companies currently has a standing compensation committee. None of the Companies has any employees and the New York Stock Exchange does not require boards of directors of registered closed-end funds to have a standing compensation committee.

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The following table shows the number of Board and committee meetings held during the fiscal year ended November 30, 20172020 for each of the Companies:

During the 20172020 fiscal year, for each of the Companies, all directors who were directors during the 20172020 fiscal year attended at least 75% of the aggregate of (1) the total number of meetings of the Board and (2) the total number of meetings held by all committees of the Board on which they served. None of the Companies has a policy with respect to Board member attendance at annual meetings. All of the directors of each of TYG, TPZ, NTG, TTP, NDP and NDPTEAF attended the Company’s 20172020 annual meeting.meeting virtually.

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Director and Officer Compensation

None of the Companies compensates any of its directors who are interested persons nor any of its officers. The following table sets forth certain information with respect to the compensation paid by each Company and the Fund Complex for fiscal 20172020 to each of the current independent directors for their services as a director. None of the Companies has any retirement or pension plans.

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For the 20182021 fiscal year, each independent director receives an annual retainer from each Company as set forth below, andbelow. Additionally, each independent director receives a fee of $1,000$200 for each telephonic meeting of the Board of Directors and each meeting of the Audit and Valuation Committee and each other committee meeting he or she attends in person (or $500 for each Boardtelephonically. The Lead Independent Director and Audit and Valuation Committee meeting attended telephonically, or for each Audit and Valuation Committee meeting attended in person that is held on the same day as a Board meeting). Independent directors also receive $500 for each other committee meeting attended in person or telephonically (other than Audit and Valuation Committee meetings). The Chairman of the Audit and Valuation Committee each receives an additional annual retainer as set forth below. Each other committee chairman receives an additional annual retainer of $1,000. The independent directors are reimbursed for expenses incurred as a result of attendance at meetings of the Board of Directors and Board committees.

Required Vote.Vote. With respect to each of TYG, NTG and TTP, Mr. Berney will be elected by the vote of a plurality of all shares of common stock and preferred stock of the Company present at the meeting, in person or by proxy, and Ms. Paquette will be elected by the vote of a plurality of all the shares of preferred stock of the Company present at the meeting, in person or by proxy. With respect to TPZ, NDP and NDP,TEAF, Mr. Berney and Ms. Paquette will each be elected by the vote of a plurality of all shares of common stock of the Company present at the meeting, in person or by proxy. When there are two vacancies for director, as is the case here, aA vote by plurality means the two nomineesnominee with the highest number of affirmative votes, regardless of theany votes withheld, for the candidates, will be elected. Therefore, with respect to each Company, abstentions and broker non-votes (which occur when a broker has not received directions from customers and does not have discretionary authority to vote the customers’ shares), if any, will not be counted towards a nominee’s achievement of a plurality. With respect to TYG, NTG and TTP, each common share and each preferred share is entitled to one vote in the election of Mr. Berney. With respect to TYG, NTG and TTP, each preferred share is entitled to one vote in the election of Ms. Paquette. With respect to TPZ, NDP and NDP,TEAF, each common share is entitled to one vote in the election of Mr. Berney and one vote in the election of Ms. Paquette.

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BOARD RECOMMENDATION

The Board of Directors of each of TYG, NTG and TTP unanimously recommends that the common and preferred stockholders of each Company vote “for” Mr. Berney as a director. The Board of Directors of each of TYG, NTG and TTP uananimouslyunanimously recommends that the preferred

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stockholders vote “for” Ms. Paquette as a director. The Board of Directors of each of TPZ, NDP and NDPTEAF unanimously recommends that the common stockholders of each Company vote “for” Mr. Berney as a director and “for” Ms. Paquette as a director.

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RATIFICATION OF SELECTION OF
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors of each Company recommends that the stockholders of the Company ratify the selection of Ernst & Young LLP (“EY”) as the independent registered public accounting firm (“independent auditors”), to audit the accounts of the Company for the fiscal year ending November 30, 2018.2021. EY’s selection was approved by each Company’s Audit and Valuation Committee. Their selection also was ratified and approved by the Board of Directors of each Company, including a majority of the directors who are not “interested persons” of the Company within the meaning of the 1940 Act, and who are “independent” as defined in the New York Stock Exchange listing standards.

EY has audited the financial statements of each Company since prior to each Company’s commencement of business (TYG in February 2004, TPZ in July 2009, NTG in July 2010, TTP in October 2011, and NDP in July 2012)2012 and TEAF in March 2019) and does not have any direct financial interest or any material indirect financial interest in any of the Companies. A representative of EY is expected to be available at the meeting and to have the opportunity to make a statement and respond to appropriate questions from the stockholders. Each Company’s Audit and Valuation Committee meets twice each year with representatives of EY to discuss the scope of their engagement, review the financial statements of the Company and the results of their examination.

Required Vote

EY will be ratified as a Company’s independent registered public accounting firm by the affirmative vote of a majority of the shares voted, in person or by proxy, at the meeting by the holders of common stock and the holders of preferred stock (if any), voting together as a single class. With respect to each of TYG, NTG and TTP, each common share and each preferred share is entitled to one vote on this proposal. With respect to TPZ, NDP and NDP,TEAF, each common share is entitled to one vote on this proposal. For the purposes of the vote on this proposal for each Company, abstentions and broker non-votes (which occur when a broker has not received directions from customers and does not have discretionary authority to vote the customers’ shares), will not be counted as shares voted and will have no effect on the result of the vote.

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BOARD RECOMMENDATION

The Board of Directors of each Company unanimously recommends that stockholders of each Company vote “for” the ratification of Ernst & Young LLP as their Company’s Independent Registered Public Accounting Firm.

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AUDIT AND VALUATION COMMITTEE REPORT

The Audit and Valuation Committee of each of TYG, TPZ, NTG, TTP, NDP and NDP,TEAF, reviews the Company’s annual financial statements with both management and the independent auditors.

The Audit and Valuation Committee of each Company, in discharging its duties, has met with and has held discussions with management and the Company’s independent auditors. Each Company’s Audit and Valuation Committee has reviewed and discussed the Company’s audited financial statements for the fiscal year ended November 30, 20172020 with management. Management of each Company has represented to the independent auditors that the Company’s financial statements were prepared in accordance with U.S. generally accepted accounting principles.

The Audit and Valuation Committee of each Company has also discussed with the independent auditors the matters required to be discussed by Auditing Standard 1301, Communications with Audit Committees, as adopted by the Public Company Accounting Oversight Board. The independent auditors provided to each Company’s Audit and Valuation Committee the written disclosures and the letter required by applicable requirements of the Public Company Accounting Oversight Board regarding the independent auditors’ communications with the Audit and Valuation Committee concerning independence, and each Company’s Audit and Valuation Committee discussed with representatives of the independent auditors their firm’s independence with respect to that Company.

With respect to each Company, based on the Audit and Valuation Committee’s review and discussions with management and the independent auditors, the representations of management and the reports of the independent auditors to the committee, the Audit and Valuation Committee recommended that the Board include the audited financial statements in the Company’s Annual Report for filing with the SEC.

Rand C. Berney (Chairman)
Conrad S. Ciccotello
Alexandra A. Herger
Jennifer Paquette

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INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Each Company’s Audit and Valuation Committee selected EY as the independent registered public accounting firm to audit the books and records of the Company for its fiscal year ending November 30, 2018.2020. EY is registered with the Public Company Accounting Oversight Board.

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INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
FEES AND SERVICES

The following table sets forth the approximate amounts of the aggregate fees billed to each Company for the fiscal years ended November 30, 20172020 and 20162019 by EY, respectively:

The Audit and Valuation Committee of each Company has adopted pre-approval policies and procedures. Under these policies and procedures, the Audit and Valuation Committee of each Company pre-approves (i) the selection of the Company’s independent registered public accounting firm, (ii) the engagement of the independent registered public accounting firm to provide any non-audit services to the Company, (iii) the engagement of the independent registered public accounting firm to provide any non-audit services to the Adviser or any entity controlling, controlled by, or under common control with the Adviser that provides ongoing services to the Company, if the engagement relates directly

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to the operations and financial reporting of the Company, and (iv) the fees and

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other compensation to be paid to the independent registered public accounting firm. With respect to each Company, the Chairman of the Audit and Valuation Committee of the Company may grant the pre-approval of any engagement of the independent registered public accounting firm for non-audit services of less than $10,000, and such delegated pre-approvals will be presented to the full Audit and Valuation Committee at its next meeting for ratification. Under certain limited circumstances, pre-approvals are not required under securities law regulations for certain non-audit services below certain de minimus thresholds. Since each Company’s respective adoption of these policies and procedures, the Audit and Valuation Committee of the Company has pre-approved all audit and non-audit services provided to the Company by EY. None of these services provided by EY were approved by the Audit and Valuation Committee pursuant to the de minimus exception under Rule 2.01(c)(7)(i)(C) or Rule 2.01(c)(7)(ii) of Regulation S-X. All of EY’s hours spent on auditing each Company’s financial statements were attributed to work performed by full-time permanent employees of EY.

The Adviser paid to EY $143,300$45,100 in 20162019 and $458,000$39,750 in 20172020 for tax and other non-audit services provided to the Adviser. These non-audit services were not required to be preapproved by each Company’s Audit and Valuation Committee. No entity controlling, controlled by, or under common control with the Adviser that provides ongoing services to any of the Companies, has paid to, or been billed for fees by, EY for non-audit services rendered to the Adviser or such entity during the Companies’ last two fiscal years.

The Audit and Valuation Committee of each Company has considered whether EY’s provision of services (other than audit services) to the Company, the Adviser or any entity controlling, controlled by, or under common control with the Adviser that provides services to the Company is compatible with maintaining EY’s independence in performing audit services.

OTHER MATTERS

The Board of Directors of each Company knows of no other matters that are intended to be brought before the meeting. If other matters are presented for action, the proxies named in the enclosed form of proxy will vote on those matters in their sole discretion.

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SECURITY OWNERSHIP OF MANAGEMENT AND
CERTAIN BENEFICIAL OWNERS

At December 31, 2017,2020, each director and director nominee beneficially owned (as determined pursuant to Rule 16a-1(a)(2) under the Exchange Act) shares of each Company overseen by such director in the Fund Complex having values within the indicated dollar ranges. Other than the Fund Complex, with respect to each Company, none of the Company’s directors and director nominees who are not interested persons of the Company, nor any of their immediate family members, has ever been a director, officer or employee of the Adviser or its affiliates.

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At December 31, 2017,2020, each director, each officer and the directors and officers as a group, beneficially owned (as determined pursuant to Rule 13d-3 under the Exchange Act) the following number of shares of common and preferred stock of each Company (or percentage of outstanding shares). Unless otherwise indicated each individual has sole investment and voting power with respect to the shares listed.

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None of the independent directors and none of the interested directors and officers hold any TYG preferred shares, NTG preferred shares or TTP preferred shares.

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AsThe table below indicates the persons known to TPZ to own 5% or more of its common stock as of December 31, 2017, to the knowledge of TPZ, no person held (sole or shared) power to vote or dispose of more than 5% of the outstanding common shares of TPZ.2020.

The table below indicates the persons known to TTP to own 5% or more of its common stock as of December 31, 2020.

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The table below indicates the persons known to NDP to own 5% or more of its common stock as of December 31, 2017.2020.

27As of December 31, 2020, to the knowledge of TYG, no person held (sole or shared) power to vote or dispose of more than 5% of the outstanding common shares of TYG.

As of December 31, 2020, to the knowledge of NTG, no person held (sole or shared) power to vote or dispose of more than 5% of the outstanding common shares of NTG.

As of December 31, 2020, to the knowledge of TEAF, no person held (sole or shared) power to vote or dispose of more than 5% of the outstanding common shares of TEAF.

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Charger Corporation is the General Partner of both First Trust Portfolios L.P. and First Trust Advisors L.P. First Trust Portfolios L.P. acts as sponsor of certain unit investment trusts which hold shares of NDP. First Trust Advisors L.P. acts as portfolio supervisor of the unit investment trusts sponsored by First Trust Portfolios L.P. that hold shares of NDP. Each of the First Trust Portfolios L.P., First Trust Advisors L.P and The Charter Corporation disclaims beneficial ownership of the identified shares of NDP.

The table below indicates the persons known to TYG to own 5% or more of its common stock as of December 31, 2017.

The table below indicates the persons known to NTG to own 5% or more of its shares of common stock as of December 31, 2017.

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The table below indicates the persons known to TTP to own 5% or more of its shares of common stock as of December 31, 2017.

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voting and dispositive power over the shares listed in the table above. The 544,983 shares reported by Guggenheim Capital, LLC includes 544,983 shares beneficially owned directly by GFD, and indirectly by Guggenheim Funds Services, LLC, Guggenheim Partners Investment Management Holdings, LLC, GI Holdco LLC, GI Holdco II LLC and Guggenheim Partners, LLC.

The table below indicates the persons known to TYG to own 5% or more of its shares of preferred stock as of December 31, 2017.2020.

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affiliated entities and therefore may be deemed to beneficially own such shares. Babson Capital Management LLC is a wholly-owned subsidiary of Massachusetts Mutual Life Insurance Company (“MassMutual”), the direct beneficial owner of 4,415,000 shares (864,270 shares after taking into account the partial redemption) of Mandatory Redeemable Preferred Stock. In addition, C.M. Life Insurance Company, a wholly-owned subsidiary of MassMutual, owns 185,000 shares (36,215 shares after taking into account the partial redemption) of Mandatory Redeemable Preferred Stock, which therefore may be deemed to be indirectly owned by MassMutual.

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The table below indicates the persons known to NTG to own 5% or more of its shares of preferred stock as of December 31, 2017.2020.

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The table below indicates the persons known to TTP to own 5% or more of its shares of preferred stock as of December 31, 2017.2020.

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or the power to direct the receipt of dividends from, or the proceeds from the sale of, the identified shares. The number of shares noted above also reflects a partial redemption that occurred in April 2020.

INVESTMENT ADVISER

Tortoise Capital Advisors, LLCL.L.C. is each Company’s investment adviser. The Adviser’s address is 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211. As of February 28, 2018,April 30, 2021, the Adviser had approximately $15.0$7.3 billion of client assets under management. Ecofin Advisors Limited (“Ecofin UK”), an affiliate of the Adviser, is an investment sub-adviser to TEAF. Ecofin UK’s address is 15 Buckingham Street, London, WC2N 6DU. As of April 30, 2021, Ecofin UK’s had approximately $0.9 billion of client assets under management. The assets under management numbers for the Adviser and Ecofin UK include $0.3 billion of assets for which the Adviser acts as investment adviser and Ecofin UK acts as sub-adviser.

MORE INFORMATION ABOUT THE MEETING

Stockholders. At the record date, each Company had the following number of shares issued and outstanding:

How Proxies Will Be Voted. All proxies solicited by the Board of Directors of each Company that are properly executed and received prior to the meeting, and that are not revoked, will be voted at the meeting. Shares represented by those proxies will be voted in accordance with the instructions marked on the proxy. If no instructions are specified, shares will be counted as a vote FOR the proposals described in this proxy statement.

How To Vote. You may vote your shares by simply completing and signing the enclosed proxy card (your ballot), and mailing it in the postage-paid envelope included in this package. You may also vote in person if you are able to attend the meeting.

Expenses and Solicitation of Proxies. The expenses of preparing, printing and mailing the enclosed proxy card, the accompanying notice and this proxy statement and all other costs, in connection with the solicitation of proxies will be borne by the Companies on a pro rata basis. Each Company may also reimburse banks, brokers and others for their reasonable expenses in forwarding proxy solicitation material to the beneficial owners of shares of the Company. In

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order to obtain the necessary quorum for a Company at the meeting, additional solicitation may be made by mail, telephone, telegraph, facsimile or personal interview by representatives of the Company, the Adviser, the Company’s transfer agent, or by brokers or their representatives or by a solicitation firm that may be engaged by the Company to assist in proxy solicitations. If a proxy solicitor is retained by any Company, the costs associated with all proxy solicitation are not anticipated to exceed $15,000. None of the Companies will pay any representatives of the Company or the Adviser any additional compensation for their efforts to supplement proxy solicitation.

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Revoking a Proxy. With respect to each Company, at any time before it has been voted, you may revoke your proxy by: (1) sending a letter stating that you are revoking your proxy to the Secretary of the Company at the Company’s offices located at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211; (2) properly executing and sending a later-dated proxy; or (3) attending the meeting, requesting return of any previously delivered proxy, and voting in person.

Quorum. With respect to each Company, the presence, in person or by proxy, of holders of shares entitled to cast a majority of the votes entitled to be cast (without regard to class) constitutes a quorum. For purposes of determining the presence or absence of a quorum, shares present at the annual meeting that are not voted, or abstentions, and broker non-votes (which occur when a broker has not received directions from customers and does not have discretionary authority to vote the customers’ shares) will be treated as shares that are present at the meeting but have not been voted.

With respect to each Company, if a quorum is not present in person or by proxy at the meeting, the chairman of the meeting or the stockholders entitled to vote at such meeting, present in person or by proxy, have the power to adjourn the meeting to a date not more than 120 days after the original record date without notice other than announcement at the meeting.

Availability of Annual Report of TYG, TPZ, NTG, TTP, NDP and NDPTEAF. . Each Company will furnish without charge upon written request a copy of its most recent annual report. Each such request must include a good faith representation that, as of the record date, the person making such request was a beneficial owner of the Company’s common shares entitled to vote at the annual meeting of stockholders. Such written request should be directed to the Company’s Secretary at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211, (866) 362-9331.

SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Section 30(h) of the 1940 Act and Section 16(a) of the Exchange Act require each Company’s directors and officers, the Adviser, affiliated persons of the Adviser and persons who own more than 10% of a registered class of the Company’s equity securities to file forms reporting their affiliation with the Company and reports of ownership and changes in ownership of the Company’s shares with the SEC and the New York Stock Exchange. Those persons and entities are required by SEC regulations to furnish the applicable Company with copies of all Section 16(a) forms they file. Based on a review of those forms furnished to the Company, each Company believes that its directors and officers, the Adviser and affiliated persons of the Adviser have complied with all applicable Section 16(a) filing requirements during the last fiscal year, except that certain non-discretionary purchases of TYG by Mr. Adams’ investment adviser in an account over which Mr. Adams had no discretion were inadvertently excluded from certain original Form 5 filings, and

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Kenneth P. Malvey, a member of the Adviser’s investment committee during the last fiscal year, was late in reporting certain automatic reinvestments of distributions for TYG and NDP by a broker not made at the dividend reinvestment plan price which exceeded the small acquisition amount in Rule 16a-6 and the sale of a fractional share of TYG by the transfer agent in connection with the transfer of shares to a brokerage account. The transactions for Mr. Adams were reported on Form 5 amendments, and the transactions of Mr. Malvey were reported on Form 4. To the knowledge of management of each Company, no person is the beneficial owner (as defined in Rule 16a-1 under the Exchange Act) of more than 10% of a class of such Company’s equity securities, except as set forth above with respect to preferred shares of TYG, NTG and TTP.

ADMINISTRATOR

TYG, TPZ, NTG, TTP, NDP and NDPTEAF have each entered into administration agreements with US Bancorp Fund Services, LLC whose principal business address is 615 E. Michigan Street, Milwaukee, Wisconsin 53202.

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STOCKHOLDER COMMUNICATIONS

Stockholders are able to send communications to the Board of Directors of each Company. Communications should be addressed to the Secretary of the applicable Company at its principal offices at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211. The Secretary will forward any communications received directly to the Board of Directors or particular director, as applicable.

CODE OF ETHICS

Each of the Companies has adopted a code of ethics pursuant to Rule 17j-1 under the 1940 Act that establishes personal trading procedures for employees designated as access persons and which is available through the Company’s link on its investment adviser’s website (www.tortoiseadvisors.com)(www.tortoiseecofin.com).

STOCKHOLDER PROPOSALS AND NOMINATIONS FOR THE 20192022 ANNUAL MEETING

Method for Including Proposals in a Company’s Proxy Statement. Under the rules of the SEC, if you want to have a proposal included in a Company’s proxy statement for its next annual meeting of stockholders, that proposal must be received by the Secretary of the Company at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211, not later than 5:00 p.m., Central Time on December 5, 2018.February 1, 2022. Such proposal must comply with all applicable requirements of Rule 14a-8 of the Exchange Act. Timely submission of a proposal does not mean the proposal will be included in the proxy material sent to stockholders.

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Other Proposals and NominationsNominations.. If you want to nominate a director or have other business considered at a Company’s next annual meeting of stockholders but do not want those items included in our proxy statement, you must comply with the advance notice provision of the Company’s Bylaws. Under each Company’s Bylaws, nominations for director or other business proposals to be addressed at the Company’s next annual meeting may be made by a stockholder who has delivered a notice to the Secretary of the Company at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211, no earlier than November 5, 2018 for each of TPZ, NTG, TTP and NDP and December 5, 2018 for TYG,January 2, 2022, nor later than 5:00 p.m. Pacific Time on December 5, 2018 for each of NTG, TTP and NDP and 5:00 p.m. Central Time on December 5, 2018 for TPZ and January 4, 2019 for TYG.February 1, 2022. The stockholder must satisfy certain requirements set forth in the Company’s Bylaws and the notice must contain specific information required by the Company’s Bylaws. With respect to nominees for director, the notice must include, among other things, the name, age, business address and residence address of any nominee for director, certain information regarding such person’s ownership of Company shares, and all other information relating to the nominee as is required to be disclosed in solicitations of proxies in an election contest or as otherwise required by Regulation 14A under the Exchange Act. With respect to other business to be brought before the meeting, a notice must include, among other things, a description of the business and any material interest in such business by the stockholder and certain associated persons proposing the business. Any stockholder wishing to make a

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proposal should carefully read and review the applicable Company’s Bylaws. A copy of each Company’s Bylaws may be obtained by contacting the Secretary of the Company at 1-866-362-9331 or by writing the Secretary of the Company at 11550 Ash Street, Suite 300,5100 W. 115th Place, Leawood, Kansas 66211. Timely submission of a proposal does not mean the proposal will be allowed to be brought before the meeting.

These advance notice provisions are in addition to, and separate from, the requirements that a stockholder must meet in order to have a proposal included in any Company’s proxy statement under the rules of the SEC.

A proxy granted by a stockholder will give discretionary authority to the proxies to vote on any matters introduced pursuant to the above advance notice Bylaw provisions, subject to applicable rules of the SEC.

April 4, 2018June 1, 2021

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