Brazil's federal energy planning company EPE has registered 1,034 projects totaling 26.3 GW for October's reserve energy auction, according to Business News Americas.
Eight biogas-fired thermoelectric plants have also been included in the auction.
According to EPE president Maurício Tolmasquim, an exclusive solar category has boosted interest from photovoltaic developers.
"Solar projects total 10 GW of installed capacity, which is practically the size of [the] Belo Monte [hydroelectric plant], Tolmasquim said.
The October 31 auction stipulates that projects be ready for commercial generation by 2017.
Brazil's reserve energy auctions are designed to guarantee supply by providing supplementary energy to the country's grid.