People in the U.S. sometimes think they don't have enough sunshine to install solar. Let's keep in mind that Germany started installing a lot of solar about 10 years ago.
Want to see how much sunshine Germany gets compared to the U.S?
As far as what to take away from looking at this map, the East Coast including Virginia, DC and Maryland get more sun hours than a good part of Europe. It's sunnier longer for more of the year here than in sunny France or Italy.
So break out the bikinis and put up some solar panels! The resource is excellent and the technology to harness it has been proven for years. Find some other solar topics you might want to understand better on our Guide to Residential Solar.