PetroSun Conducts Initial Algae-to-Biofuel Program

PHOENIX, AZ--(Marketwire - August 8, 2007) - PetroSun, Incorporated (PINKSHEETS: PSUD) announced today that the Company conducted its initial algae-to-biofuel program held at Auburn and Opelika, Alabama. Invited participants included representatives from a Fortune 100 company and Icon Energy of Brisbane, Australia. PetroSun was assisted by personnel from its subsidiary AL-G-BAMA.

"The purpose of these meetings is to demonstrate to potential customers that algal oil is a commercially viable alternative feedstock for the biodiesel industry," said Gordon LeBlanc, Jr., CEO of PetroSun. "The Company intends to hold a series of these programs during August and September with biodiesel refiners and firms that are researching the use of algal oil as a potential feedstock for jet fuel production."

PetroSun will be filing a number of Provisional Applications to protect its algae cultivation system and algal oil extraction technologies with the United States Patent and Trademark Office.

About PetroSun

PetroSun's operations include oil and gas exploration, development and production, algae-to-algal oil alternative fuels production and oilfield services. The oil and gas division is focused on the exploration of the Canning Basin of Western Australia and the Holbrook Basin of Arizona. The Company will continue the development of oil and gas reserves in Louisiana. The alternative fuels division is in the pre-commercial stage of the algae-to-biofuels production technology. The Company plans to establish algae farms and algal oil extraction plants in Alabama, Arizona, Louisiana, California, Mexico and Australia during 2007/2008. The algal oil product will be marketed as feedstock to existing biodiesel refiners. The oilfield services division is in the process of upgrading our capabilities to support the exploration, development and production operations. PetroSun is headquartered in Scottsdale, Arizona with field offices in Shreveport, Louisiana and Opelika, Alabama. For more information about PetroSun visit the company's website at http://www.petrosuninc.com.

Except historical matter contained herein, matters discussed in this news release are forward-looking statements and are made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect assumptions and involve risks and uncertainties, which may affect the Company's business and prospects and cause actual results to differ materially from these forward-looking statements.