PSEC – A Prospect Capital Fund

Prospect Energy Corporation Prices Public Offering of Common Stock

August 10, 2006

NEW YORK, NY — (MARKET WIRE) — 08/10/06 — Prospect Energy Corporation(NASDAQ: PSEC) (“Prospect”) announced that it priced a public offering of4,971,000 shares of common stock at $15.30 per share, raising $76,056,300in gross proceeds. Prospect expects to use the net proceeds of thisoffering to repay outstanding indebtedness, to fund investments inportfolio companies and for general corporate purposes.

The offering is subject to customary closing conditions and the shares areexpected to be delivered on August 16, 2006. Prospect has also granted theunderwriters an option to purchase up to an additional 745,650 shares ofcommon stock to cover over-allotments, if any.

Morgan Keegan & Company, Inc. managed the offering, with the followingco-managers: Ferris, Baker Watts, Incorporated, Oppenheimer & Co. Inc.,D.A. Davidson & Co., and Sterne, Agee & Leach, Inc.

Copies of the prospectus supplement relating to the offering may beobtained by contacting Morgan Keegan & Company, Inc., 50 N. Front Street,19th Floor, Memphis, Tennessee, 38103; (901) 524-4100. Investors shouldconsider the investment objectives, risks, and charges and expenses ofProspect carefully before investing. The prospectus supplement and theaccompanying prospectus contain these and other information about Prospect.Investors should read the prospectus supplement and the accompanyingprospectus carefully before investing.

This press release shall not constitute an offer to sell or thesolicitation of an offer to buy nor shall there be any sale or an offer tobuy these securities in any state in which such offer, solicitation or salewould be unlawful prior to registration or qualification under thesecurities laws of any such state.

ABOUT PROSPECT ENERGY CORPORATION

Prospect Energy Corporation (www.prospectenergy.com) is a closed-endinvestment company that lends to and invests in energy-related businesses.Prospect Energy’s investment objective is to generate both current incomeand capital appreciation through debt and equity investments.

Prospect Energy has elected to be treated as a business development companyunder the Investment Company Act of 1940 (“1940 Act”). We are required tocomply with a series of regulatory requirements under the 1940 Act as wellas applicable NASDAQ, federal and state laws and regulations. We haveelected to be treated as a regulated investment company under the InternalRevenue Code of 1986. Failure to comply with any of the laws andregulations that apply to Prospect Energy could have a material adverseeffect on Prospect Energy and its shareholders.

This press release contains forward-looking statements within the meaningof the Private Securities Litigation Reform Act of 1995. Any suchstatements, other than statements of historical fact, are likely to beaffected by other unknowable future events and conditions, includingelements of the future that are or are not under the Company’s control, andthat the Company may or may not have considered; accordingly, suchstatements cannot be guarantees or assurances of any aspect of futureperformance. Actual developments and results are highly likely to varymaterially from these estimates and projections of the future. Suchstatements speak only as of the time when made, and the Company undertakesno obligation to update any such statement now or in the future.

Please send investment proposals to:Prospect Energy CorporationJohn BarryChairman and Chief Executive Officerjbarry@prospectstreet.comGrier EliasekPresident and Chief Operating Officergrier@prospectstreet.com(212) 448-0702