The CMRC unanimously approved the plans, which means it could still be the first offshore project in the US.
The council is the leading permitting agency for the project. In January, it released a preliminary judgement, offering no objection to the Block Island plans with just some recommendations.
Last week, the project's developer, Deepwater Wind, received two environmental permits from the state's environmental management department.
The project now requires federal approval from the Bureau of Ocean Energy Management and the US Army Corps of Engineers.
Deepwater has awarded Alstom the contract to supply five 6MW Haliade turbines for the site.
It intends to use the 30MW project as a demonstration for a possible offshore wind project of up to 200 turbines in the Rhode Island Sound.
Last week, it was announced that Deepwater would also develop an offshore project in Oregon, which received $47 million from the US Department of Energy.