Jamaica has agreed to waive a bauxite levy at RusAl's last operational plant on the island.
As part of the one-year concessionary pact, RusAl will maintain its workforce of 600 workers at the Ewarton Alumina Refinery.
A RusAl spokeswoman said Wednesday that the company also plans to build a coal-fired plant at the site.
Jamaican Energy Minister Phillip Paulwell said that will be a $100 million investment. He said construction on the coal-fired plant will begin next year.