The Brazilian state development bank's new financing instrument will have an asset base of US$120mn.
In July, Canada's Alberta agreed to inject US$96mn into the water and sanitation company.
The plant would treat 70Mt of accumulated waste to generate power for the city's metro system.
The incoming government will invest some US$6.39bn to develop transport infrastructure projects.
The local government will invest some US$45mn on the works.
Some 500mn pesos will be allocated to social and cultural infrastructure, 350mn pesos to water and sanitation initiatives and 350mn pesos to energy projects.
The government seeks additional support from lawmakers for the controversial issue.