The islands of the Caribbean basin are predominantly net energy importers, with the exception of Trinidad and Tobago. Some islands, such as Aruba, Curacao, and the U.S. Virgin Islands, are important centers for oil refining and storage, due to their proximity to the U.S. market. In recent years, there has been concern that higher global oil prices will impair the Caribbean economies, as they are highly dependent upon oil for the energy needs. In response, the island nations have been discussing ways to promote alternative energy sources and better integrate their energy sectors.