Superblock chairman Jormsup Lochaya was cited by the news agency as saying that the company hopes to raise BHT25bn ($737.7m) through share sales and warrant issues to fund its expansion.
It has also received credit financing for BHT6.7bn ($197.7m) from Bangkok Bank, which has been used to develop Superblock's first solar project.
The firm intends to draw 90% of its revenue from solar projects within 2015.
As well as solar, the Thai energy distributor also has plans to invest around BHT90m ($2.6m) per MW in wind energy sector for a combined capacity of 695MW.