Southern Power , a subsidiary of Southern Company , has signed an agreement with Renewable Energy Systems Americas ( RES ) to jointly develop and build around 10 GW of wind projects in the US . As part of the deal, RES will be the lead developer and balance-of-plant provider for projects while Southern Power will serve as co-developer for future projects. The agreement includes 10 different projects which will be operational between 2015 and 2020 . Turbines for the sites will be supplied by both Siemens and Vestas . The agreement will see RES act as lead developer and balance - of - plant provider , and Southern Power serve as co - developer .
Southern Power , a subsidiary of Southern Company , has signed an agreement with Renewable Energy Systems Americas ( RES ) to jointly develop and build around 10 GW of wind projects in the US . The agreement includes 10 different projects which will be operational between 2015 and 2020 . Turbines for the sites will be supplied by both Siemens and Vestas . The agreement will see RES act as lead developer and balance - of - plant provider , and Southern Power serve as co - developer .