<Table> Solar Thermal Electric Generation in the United States <Tr> <Th> Year </Th> <Th> Summer Capacity (GW) </Th> <Th> Electrical energy (G kWh) </Th> <Th> Capacity factor </Th> <Th> Yearly growth of Generating Capacity </Th> <Th> Yearly growth of produced Energy </Th> <Th> Portion of renewable electrical energy </Th> <Th> Portion of total electrical energy </Th> </Tr> <Tr> <Td> 2015 </Td> <Td> 1.7767 </Td> <Td> 3.241 </Td> <Td> 0.227 </Td> <Td> 7.177% </Td> <Td> 32.777% </Td> <Td> 0.59% </Td> <Td> 0.08% </Td> </Tr> <Tr> <Td> 2014 </Td> <Td> 1.6579 </Td> <Td> 2.441 </Td> <Td> 0.198 </Td> <Td> 33.70% </Td> <Td> 166.78% </Td> <Td> 0.45% </Td> <Td> 0.06% </Td> </Tr> <Tr> <Td> 2013 </Td> <Td> 1.24 </Td> <Td> 0.915 </Td> <Td> 0.178 </Td> <Td> 160.50% </Td> <Td> 5.71% </Td> <Td> 0.18% </Td> <Td> 0.02% </Td> </Tr> <Tr> <Td> 2012 </Td> <Td> 0.476 </Td> <Td> 0.876 </Td> <Td> 0.238 </Td> <Td> 1.06% </Td> <Td> 8.68% </Td> <Td> 0.18% </Td> <Td> 0.02% </Td> </Tr> <Tr> <Td> 2011 </Td> <Td> 0.471 </Td> <Td> 0.806 </Td> <Td> 0.239 </Td> <Td> </Td> <Td> 2.15% </Td> <Td> 0.16% </Td> <Td> 0.02% </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 0.789 </Td> <Td> 0.245 </Td> <Td> </Td> <Td> 7.35% </Td> <Td> 0.18% </Td> <Td> 0.02% </Td> </Tr> <Tr> <Td> 2009 </Td> <Td> </Td> <Td> 0.735 </Td> <Td> 0.236 </Td> <Td> </Td> <Td> - 6.73% </Td> <Td> 0.18% </Td> <Td> 0.02% </Td> </Tr> <Tr> <Td> 2008 </Td> <Td> </Td> <Td> 0.788 </Td> <Td> 0.195 </Td> <Td> </Td> <Td> 32.21% </Td> <Td> 0.21% </Td> <Td> 0.02% </Td> </Tr> </Table> <Tr> <Th> Year </Th> <Th> Summer Capacity (GW) </Th> <Th> Electrical energy (G kWh) </Th> <Th> Capacity factor </Th> <Th> Yearly growth of Generating Capacity </Th> <Th> Yearly growth of produced Energy </Th> <Th> Portion of renewable electrical energy </Th> <Th> Portion of total electrical energy </Th> </Tr> <Tr> <Td> 2015 </Td> <Td> 1.7767 </Td> <Td> 3.241 </Td> <Td> 0.227 </Td> <Td> 7.177% </Td> <Td> 32.777% </Td> <Td> 0.59% </Td> <Td> 0.08% </Td> </Tr> <Tr> <Td> 2014 </Td> <Td> 1.6579 </Td> <Td> 2.441 </Td> <Td> 0.198 </Td> <Td> 33.70% </Td> <Td> 166.78% </Td> <Td> 0.45% </Td> <Td> 0.06% </Td> </Tr>

Where is solar energy found in the united states