HOUSTON, March 6 (Reuters) - Brazil's state-run oil firm Petrobras and Norwegian energy provider Equinor on Monday said they signed an agreement to evaluate the development of seven wind projects offshore Brazil.

The proposed projects would deliver a combined capacity of 14.5 gigawatts of power, Petrobras CEO Jean Paul Prates said at the CERAWeek energy conference in Houston. The project could cost $70 billion and take six years to begin production, he said. (Reporting by Sabrina Valle)