PetroSun and Shanghai Firm Execute Agreement

SCOTTSDALE, AZ--(Marketwire - September 29, 2008) - PetroSun, Inc. (PINKSHEETS: PSUD) announced today that the Company has executed an agreement with Shanghai Jun Ya Yan Technology Development Co., Ltd. to establish a commercial scale algae farm system pilot facility within the People's Republic of China. The planned algae farm complex will produce algae biomass for conversion to biodiesel, ethanol and other commercial products.

The terms of the agreement include a forty million dollar ($40,000,000US) sole funding commitment from Shanghai Jun Ya Yan Technology Development for the construction and equipping of the initial algae farm system. The profits from the venture will be allocated on a 50/50 basis between the parties. PetroSun China has been granted the license from PetroSun, Inc. for the algae-to-biofuel technology and will manage the operations in China.

About PetroSun

PetroSun, Inc. is a diversified energy company with technology and operations in the commercialization of algae-to-biofuels, microbial enhanced oil recovery, oil and gas exploration and development and oilfield pipe and supply.

For more information about PetroSun visit the company's website at 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.