Electricity Generation Aggregated by U.S. County

National Rank	County	Net Generation (Past Year)	Power Plants
#139	Mason County, KY	8.8 TWh	2
#631	Mason County, IL	1.3 TWh	4
#198	Mason County, WV	6.9 TWh	2
#1,175	Mason County, WA	304.6 GWh	3
#846	Mason County, MI	686.5 GWh	4
#833	Martin County, MN	717.1 GWh	9
#965	Martin County, NC	513.0 GWh	18
#1,230	Martin County, TX	253.9 GWh	1
#1,286	Martin County, KY	210.9 GWh	1
#146	Martin County, FL	8.6 TWh	6
#1,744	Martin County, IN	28.5 GWh	2
#1,894	Marshall County, MS	10.1 GWh	4
#1,629	Marshall County, IN	53.9 GWh	2
#1,097	Marshall County, IL	382.4 GWh	6
#1,022	Marshall County, AL	454.8 GWh	2
#315	Marshall County, IA	4.1 TWh	7
#600	Marshall County, KY	1.5 TWh	3
#649	Marshall County, KS	1.2 TWh	2
#298	Marshall County, WV	4.6 TWh	4
#902	Marquette County, MI	600.9 GWh	9
#1,273	Marlboro County, SC	219.8 GWh	3
#1,181	Mariposa County, CA	299.7 GWh	2
#1,046	Marion County, OR	434.3 GWh	30
#870	Marion County, AR	647.3 GWh	1
#985	Marion County, TN	491.2 GWh	1
#1,330	Marion County, IA	179.5 GWh	5
#885	Marion County, WV	616.4 GWh	4
#2,101	Marion County, IL	964.0 MWh	4
#1,718	Marion County, OH	32.7 GWh	4
#2,130	Marion County, FL	129.0 MWh	1
#1,769	Marion County, SC	24.8 GWh	11
#320	Marion County, IN	4.0 TWh	24
#663	Marion County, TX	1.2 TWh	1
#565	Marion County, KS	1.7 TWh	3
#1,310	Marinette County, WI	193.4 GWh	10
#1,802	Marin County, CA	19.0 GWh	3
#1	Maricopa County, AZ	79.1 TWh	88
#1,173	Marengo County, AL	313.0 GWh	1
#262	Marathon County, WI	5.2 TWh	8
#91	Manitowoc County, WI	10.8 TWh	7
#980	Manistee County, MI	495.3 GWh	3
#147	Manatee County, FL	8.6 TWh	13
#1,124	Malheur County, OR	356.3 GWh	15
#760	Major County, OK	855.5 GWh	3
#1,756	Mahoning County, OH	26.8 GWh	3
#908	Mahaska County, IA	591.8 GWh	1
#1,055	Madison County, GA	426.9 GWh	2
#1,343	Madison County, TN	172.9 GWh	4
#1,247	Madison County, MS	238.9 GWh	1
#1,161	Madison County, IA	330.0 GWh	2
#1,328	Madison County, NY	181.7 GWh	16
#1,551	Madison County, MT	76.2 GWh	1
#1,542	Madison County, AL	79.4 GWh	2
#991	Madison County, IL	481.3 GWh	10
#1,029	Madison County, FL	446.7 GWh	4
#688	Madison County, IN	1.1 TWh	10
#512	Madison County, OH	1.9 TWh	5
#1,692	Madison County, ID	38.1 GWh	1
#1,923	Madison County, MO	8.4 GWh	1
#1,805	Madison County, NE	18.5 GWh	5
#2,071	Madison County, NC	2.1 GWh	3
#700	Madera County, CA	1.1 TWh	28
#1,907	Macoupin County, IL	9.5 GWh	4
#1,531	Macon County, MO	84.7 GWh	6
#1,313	Macon County, NC	190.3 GWh	3
#898	Macon County, GA	604.0 GWh	3
#486	Macon County, IL	2.2 TWh	6
#1,381	Macomb County, MI	154.5 GWh	4
#1,407	Lyon County, MN	137.1 GWh	16
#910	Lyon County, KY	590.6 GWh	2
#922	Lyon County, NV	581.3 GWh	5
#656	Lyon County, KS	1.2 TWh	4
#468	Lynn County, TX	2.3 TWh	5
#224	Lycoming County, PA	6.3 TWh	8
#13	Luzerne County, PA	26.3 TWh	10
#509	Luna County, NM	2.0 TWh	8
#207	Lucas County, OH	6.6 TWh	11
#2,088	Lucas County, IA	1.5 GWh	1
#406	Lubbock County, TX	2.9 TWh	8
#215	Lowndes County, MS	6.5 TWh	4
#1,020	Lowndes County, GA	455.0 GWh	12
#900	Lowndes County, AL	602.0 GWh	1
#384	Lower Connecticut River Valley Planning Region, CT	3.3 TWh	16
#1,991	Love County, OK	4.6 GWh	1
#290	Louisa County, IA	4.7 TWh	2
#37	Louisa County, VA	17.1 TWh	9
#289	Loudoun County, VA	4.7 TWh	2
#647	Loudon County, TN	1.3 TWh	4
#33	Los Angeles County, CA	17.7 TWh	308
#2,116	Los Alamos County, NM	447.0 MWh	1
#555	Lorain County, OH	1.7 TWh	7
#611	Logan County, IL	1.4 TWh	7
#720	Logan County, OK	993.5 GWh	3
#392	Logan County, CO	3.2 TWh	18
#1,843	Logan County, AR	13.7 GWh	3
#954	Logan County, OH	532.8 GWh	3
#1,140	Logan County, KY	343.7 GWh	1
#358	Llano County, TX	3.6 TWh	2
#460	Livingston County, IL	2.4 TWh	13
#1,150	Livingston County, KY	336.3 GWh	1

Net Generation data is based on the last 12 months since Dec 2025

Top 20 U.S. Counties by Net Generation

Totals are based on the most recent 12 months net generation

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