Transparent Cost Database

The information you'll find on OpenEI is community driven, it is a collection of content and data provided by contributors ranging from experts to enthusiasts. The platform is a wiki, similar to Wikipedia’s Wiki, with which many people are already familiar. OpenEI users can view, edit, add data – and download data for free. There are currently more than 201,611 pages on OpenEI, those pages contain a wide variety of topics: from renewable energy, to policy & regulations, to analyzed data and raw data.