This database of existing nonutility information may be searched by state, company, unit ID, generator nameplate capacity, and year of commercial operation, as well as by other fields.

The Electricity Database Files Web site from the Department of Energy's Energy Information Administration division contains several helpful resources. The site's two main categories are entitled Electric Generator Databases and Power Plant Databases, which contain more than a dozen links to related information. These include everything from an Annual Electric Generator Report, Electric Utilities...