Electricity Generation Aggregated by Maryland County

State Rank	County	Net Generation (Past Year)	Power Plants
#11	Allegany County, MD	198.7 GWh	5
#5	Anne Arundel County, MD	3.2 TWh	13
#9	Baltimore city, MD	376.2 GWh	11
#16	Baltimore County, MD	74.9 GWh	31
#1	Calvert County, MD	14.9 TWh	3
#14	Caroline County, MD	94.3 GWh	2
#21	Carroll County, MD	24.4 GWh	4
#4	Cecil County, MD	3.5 TWh	10
#3	Charles County, MD	3.9 TWh	6
#13	Dorchester County, MD	133.6 GWh	8
#18	Frederick County, MD	71.2 GWh	11
#8	Garrett County, MD	760.0 GWh	24
#6	Harford County, MD	1.8 TWh	20
#17	Howard County, MD	73.8 GWh	26
#22	Kent County, MD	13.5 GWh	6
#7	Montgomery County, MD	788.4 GWh	18
#2	Prince George's County, MD	8.0 TWh	42
#10	Queen Anne's County, MD	343.7 GWh	10
#12	Somerset County, MD	160.1 GWh	7
#23	Talbot County, MD	12.7 GWh	3
#15	Washington County, MD	76.3 GWh	20
#19	Wicomico County, MD	44.6 GWh	11
#20	Worcester County, MD	34.3 GWh	5

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

Totals are based on the most recent 12 months net generation

List of All Maryland Counties