I'm assuming that most people have Google Earth™ installed on their computer. If not, well I'm sure you can find and install it if you have the interest. There is a cool .kml file that overlays all the power plants in the world onto Google Earth.
Sadly most of the ones I checked out didn't have the coordinates quite right - so you might find a power plant flag in the middle of a housing tract, or out in the middle of nowhere! However, it's easy to make edits to the wiki if you are inclined to correct such things. I might enjoy doing some of that in my spare time.
Here is the link to the page with the .kml file. http://enipedia.tudelft.nl/wiki/Portal:Power_Plants Scroll down to where it says "Navigate Enipedia with Google Earth kml file" then click download.