Global offshore wind heavyweights warned Brazilian lawmakers not to load costs onto the nation’s first wave of projects as they labelled planned charges too steep.

Developers told a Senate hearing that a fee of 5% of gross revenues proposed in an offshore wind bill currently under consideration should be reduced and be based on net revenue from power sold.

"We need to take care not to excessively burden companies financially and we consider around 1% of net revenue to be ideal," said Diogo Nobrega, president of Copenhagen Offshore Partners in Brazil.