Brazil boasts of being one of the world's "greenest" energy suppliers, but recent policy initiatives could jeopardise its desire to be a big player in future climate change discussions.
"In the 1970s, Brazil's energy production was dominated by two sources, wood and oil," says Maurício Tolmasquim, president of Brazil's Energy Research Company (EPE).
As its economy has expanded, so has its demand for energy, but even now, 46% of Brazil's energy production is from renewable sources.
This compares with the global average of only 13%, making Brazil one of the greenest countries in the world.
BBC Brasil has been back to its home country as part of a series looking at where the fast-growing Bric economies (Brazil, Russia, India and China) will be in 2020.
But despite a proud record as a green energy producer, it found that Brazil's environmental credentials are under threat.
Hydro-electric power
Much of Brazil's ...