Rio Energy, the Brazilian renewable energy arm of US fund Denham Capital, is preparing a second issue of local currency tax-exempt bonds after a first issue this year of R$112m ($33.9m) that closed the financing of the 207MW Itarema wind complex.

The new issue, which is scheduled for 2018, will help finance the construction of the 223MW Serra da Babilona wind farm in the northeastern state of Bahia.