| Mississippi Power Company | United States | federal | 2010 | $279,000,000 | | federal allocated tax credit |
| Southern Company Services | United States | federal | 2004 | $270,000,000 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2008 | $256,411,736 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2014 | $219,290,665 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2006 | $182,035,889 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2009 | $164,527,160 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 1990 | $104,337,914 | | federal grant |
| Diamond State Generation Partners, LLC | United States | federal | 2014 | $77,613,975 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2016 | $37,084,896 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2021 | $27,354,975 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2011 | $13,224,132 | | federal grant |
| Southern Company Services Inc | United States | federal | 2008 | $13,000,000 | | federal grant |
| Alabama Power Company | United States | federal | 2010 | $6,000,000 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2019 | $5,674,533 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2007 | $2,852,666 | | federal grant |
| Mississippi Power Company | United States | federal | 2010 | $2,611,049 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2007 | $1,968,000 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2018 | $1,734,729 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2005 | $1,625,241 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2022 | $997,897 | | federal grant |
| Southern Power Company | North Carolina | state | 2020 | $797,681 | | tax credit/rebate |
| Southern Power Company | North Carolina | state | 2015 | $648,886 | | tax credit/rebate |
| Southern Power Company | North Carolina | state | 2014 | $520,435 | | tax credit/rebate |
| Southern Company Services, Inc. | United States | federal | 2015 | $419,629 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2005 | $306,994 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2018 | $249,985 | | federal grant |
| Southern Company Services, Inc. | United States | federal | 2014 | $248,492 | | federal grant |
| Southern Power Company | North Carolina | state | 2016 | $235,142 | | tax credit/rebate |
| Southern Power Company | North Carolina | state | 2022 | $202,685 | | tax credit/rebate |
| Mississippi Power | Mississippi | state | 2011 | $175,748 | | training reimbursement |
| Southern Power Company | North Carolina | state | 2021 | $161,537 | | tax credit/rebate |
| NICOR, Inc. | New Mexico | State | 2019 | $102,067 | | grant |
| Mississippi Power | Mississippi | state | 2009 | $96,410 | | training reimbursement |
| NICOR | New Mexico | state | 2015 | $88,689 | | training reimbursement |
| Mississippi Power | Mississippi | state | 2010 | $78,529 | | training reimbursement |
| GEORGIA POWER COMPANY | United States | federal | 2014 | | $3,462,409,117 | federal loan or loan guarantee |
| GEORGIA POWER COMPANY | United States | federal | 2021 | | $1,668,223,779 | federal loan or loan guarantee |
| Alabama Power Company | United States | federal | 2006 | | $419,500,000 | federal tax-exempt bond |
| Mississippi Power Company | United States | federal | 2010 | | $100,000,000 | federal tax-exempt bond |
| NICOR INC | United States | federal | 2022 | | $2,444,500 | federal loan or loan guarantee |
| NICOR INC | United States | federal | 2022 | | $1,425,000 | federal loan or loan guarantee |
| NICOR INC | United States | federal | 2020 | | $765,400 | federal loan or loan guarantee |
| Mississippi Power Company | Mississippi | state | 2012 | undisclosed | | tax credit/rebate |
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