A rule unveiled by the Environmental Protection Agency could force power plants to capture smokestack emissions using a technology that has long been promised but is not in widespread use in the U.S.

Alaska's new Sustainable Energy Action Plan aims to cut greenhouse gas emissions and promote renewable energy, excluding oil industry cuts.

An $11 million study, funded by a U.S. Department of Energy grant, will investigate the feasibility of a new coal power plant in Alaska with carbon capture and storage technology.