| Ohio Power Company | Ohio | state | 2019 | undisclosed | | enterprise zone |
| AEP UTILITIES, INC | Oklahoma | state | 2019 | $12,125,366 | | tax credit/rebate |
| AEP UTILITIES, INC | Oklahoma | state | 2019 | $12,348,798 | | tax credit/rebate |
| Ohio Power Company | Ohio | local | 2018 | $3,656,438 | | tax credit/rebate |
| American Electric Power Service Corporation | Ohio | state | 2018 | $9,778,672 | | tax exemption |
| American Electric Power | Virginia | state | 2018 | $54,000 | | training reimbursement |
| Wheeling Power Company | West Virginia | state | 2018 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2018 | undisclosed | | tax credit/rebate |
| Wheeling Power | West Virginia | state | 2018 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2018 | undisclosed | | tax credit/rebate |
| AEP UTILITIES, INC | Oklahoma | state | 2017 | $25,420,773 | | tax credit/rebate |
| AEP Texas Central Company | Texas | local | 2017 | undisclosed | | grant |
| Wheeling Power Company | West Virginia | state | 2017 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2017 | undisclosed | | tax credit/rebate |
| Wheeling Power | West Virginia | state | 2017 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2017 | undisclosed | | tax credit/rebate |
| AMERICAN ELECTRIC POWER | Ohio | state | 2016 | $100,000 | | training reimbursement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | state | 2016 | $52,342 | | property tax abatement |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2016 | $483,820 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2016 | $441,426 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2016 | $539,162 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2016 | $555,299 | | property tax abatement |
| AEP Ohio Transmission Company, LLC | Ohio | state | 2016 | undisclosed | | enterprise zone |
| Wheeling Power Company | West Virginia | state | 2016 | undisclosed | | tax credit/rebate |
| Aep Generation Resources Inc | West Virginia | state | 2016 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2016 | undisclosed | | tax credit/rebate |
| Wheeling Power | West Virginia | state | 2016 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2016 | undisclosed | | tax credit/rebate |
| AEP GENERATION RESOURCES INC | Ohio | state | 2015 | $173,380 | | grant |
| AMERICAN ELECTRIC POWER | Ohio | state | 2015 | $250,000 | | grant |
| OHIO POWER COMPANY | Ohio | state | 2015 | $246,142 | | grant |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2015 | $7,371,737 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2015 | $624,560 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2015 | $570,754 | | property tax abatement |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2015 | $651,752 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2015 | $510,311 | | property tax abatement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | state | 2015 | $25,314 | | property tax abatement |
| AEP UTILITIES, INC | Oklahoma | state | 2015 | $1,027,044 | | tax credit/rebate |
| American Electric Power | Michigan | state | 2015 | undisclosed | | property tax abatement |
| American Electric Power Company | Michigan | state | 2015 | undisclosed | | property tax abatement |
| Wheeling Power Company | West Virginia | state | 2015 | undisclosed | | tax credit/rebate |
| Aep Generation Resources Inc | West Virginia | state | 2015 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2015 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2015 | undisclosed | | tax credit/rebate |
| AMERICAN ELECTRIC POWER | Ohio | state | 2014 | $249,348 | | grant |
| OHIO POWER COMPANY | Ohio | state | 2014 | $207,811 | | grant |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | local | 2014 | $642,180 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | local | 2014 | $816,058 | | property tax abatement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | local | 2014 | $274,283 | | property tax abatement |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | local | 2014 | $318,164 | | property tax abatement |
| AEP Service Corp / Ohio Power Company Agreement | Ohio | state | 2014 | $290,761 | | enterprise zone |
| AEP Transmission Company, Inc. | Ohio | state | 2014 | undisclosed | | enterprise zone |
| AEP UTILITIES, INC | Oklahoma | state | 2014 | $2,430,289 | | tax credit/rebate |
| American Electric Power Company Inc | West Virginia | state | 2014 | undisclosed | | tax credit/rebate |
| Wheeling Power Company | West Virginia | state | 2014 | undisclosed | | tax credit/rebate |
| Aep Generation Resources Inc | West Virginia | state | 2014 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2014 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2014 | undisclosed | | tax credit/rebate |
| OHIO POWER COMPANY | Ohio | state | 2013 | $44,508 | | training reimbursement |
| AMERICAN ELECTRIC POWER | Ohio | state | 2013 | $35,342 | | training reimbursement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2013 | $384,803 | | property tax abatement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | state | 2013 | $356,717 | | property tax abatement |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2013 | $278,621 | | property tax abatement |
| AEP UTILITIES, INC | Oklahoma | state | 2013 | $2,489,486 | | tax credit/rebate |
| American Electric Power Co Inc | West Virginia | state | 2013 | undisclosed | | tax credit/rebate |
| Wheeling Power Company | West Virginia | state | 2013 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2013 | undisclosed | | tax credit/rebate |
| Ohio Power Company | West Virginia | state | 2013 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2013 | undisclosed | | tax credit/rebate |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2012 | $314,322 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2012 | $616,012 | | property tax abatement |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2012 | $1,063,000 | | property tax abatement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | state | 2012 | $44,919 | | property tax abatement |
| AEP UTILITIES, INC | Oklahoma | state | 2012 | $1,965,232 | | tax credit/rebate |
| AEP UTILITIES, INC | Oklahoma | state | 2012 | $8,109,538 | | tax credit/rebate |
| American Electric Power Co Inc | West Virginia | state | 2012 | undisclosed | | tax credit/rebate |
| Wheeling Power Company | West Virginia | state | 2012 | undisclosed | | tax credit/rebate |
| Ohio Power Company | West Virginia | state | 2012 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2012 | undisclosed | | tax credit/rebate |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2011 | $97,363 | | property tax abatement |
| Southwestern Electric Power Company (Lieberman Power Plant) | Louisiana | state | 2011 | $40,294 | | property tax abatement |
| Wheeling Power Company | West Virginia | state | 2011 | undisclosed | | tax credit/rebate |
| American Electric Power Co Inc | West Virginia | state | 2011 | undisclosed | | tax credit/rebate |
| Ohio Power Company | West Virginia | state | 2011 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2011 | undisclosed | | tax credit/rebate |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2010 | $3,954,000 | | Enterprise zone |
| Southwestern Electric Power Company dba SWEPCO | Louisiana | state | 2010 | $92,588,770 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2010 | $788,878 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2010 | $661,731 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2010 | $617,675 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2010 | $579,368 | | property tax abatement |
| Southwestern Electric Power Company (Dolet Hills Power Plant) | Louisiana | state | 2010 | $380,854 | | property tax abatement |
| Appalachian Power Company | West Virginia | state | 2010 | $3,628 | | training reimbursement |
| SWEPCO | Louisiana | multiple | 2010 | $96,542,770 | | MEGADEAL (Archived)  |
| Appalachian Power | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| Ohio Power Company | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| American Electric Power Co INC | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| American Electric Power Co INC | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| Appalachian Power Company | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| Wheeling Power Company | West Virginia | state | 2010 | undisclosed | | tax credit/rebate |
| American Electric Power Service Corporation | United States | federal | 2010 | $45,844,268 | | federal grant |
