Anyone can put anything on the Internet. You need to evaluate each web page you look at.
After considering these factors, if you're still not sure, ask a professor or a librarian.
The National Renewable Energy Laboratory (NREL) is an applied energy laboratory and uses a comprehensive, integrated, and deliberate approach to clean energy research and development. This approach might best be called "deliberate science". This video shows how NREL is "deliberately focused toward helping the nation reach its clean energy goals."