With the volatility of oil cost, and its negative impacts on the environment, solar energy is destined to get a lot of attention in the coming years. The Solar Energy Research Education Foundation (SEREF) has produced maps illustrating the growth of jobs likely to result from growth in the solar energy industry for the US. They got help from Google Earth Outreach and Google.org to produce the maps using Google Earth technology. The maps show over 400,000 new jobs due to solar energy industry growth by the year 2016.
You can view the map using the GE plugin on a web page here . Or, you can load it directly in Google Earth using this KML file .
The KML file also includes additional maps for the different types of solar energy, and includes a 4D animated prism map of the job growth (but, the last map file is missing at the moment). via Official Google Blog