Fuel flexibility isn't free. Whether you're equipping a new power plant to burn more than one type of coal or retrofitting an existing plant to handle coal blends, you'll have to spend time and money to ensure that all three functions performed by its coal-handling system-unloading, stockout, and reclaim-are up to the task. The first half of this article lays out the available options for configuring each subsystem to support blending. The second half describes, in words and pictures, how 12 power plants-both new and old-address the issue.