Electricity Generation Aggregated by Maryland County

State Rank	County	Net Generation (Past Year)	Power Plants
#2	Prince George's County, MD	6.8 TWh	34
#14	Baltimore County, MD	65.8 GWh	25
#15	Howard County, MD	60.4 GWh	21
#13	Washington County, MD	79.4 GWh	19
#6	Harford County, MD	1.7 TWh	19
#8	Montgomery County, MD	695.9 GWh	18
#9	Garrett County, MD	623.4 GWh	14
#5	Anne Arundel County, MD	3.0 TWh	11
#16	Frederick County, MD	59.6 GWh	11
#10	Baltimore city, MD	356.5 GWh	11
#11	Queen Anne's County, MD	196.9 GWh	9
#17	Dorchester County, MD	50.4 GWh	7
#4	Cecil County, MD	3.0 TWh	7
#12	Somerset County, MD	154.8 GWh	7
#18	Wicomico County, MD	43.6 GWh	7
#3	Charles County, MD	4.0 TWh	6
#20	Kent County, MD	17.7 GWh	6
#7	Allegany County, MD	754.6 GWh	5
#19	Carroll County, MD	24.8 GWh	4
#21	Worcester County, MD	13.5 GWh	4
#22	Talbot County, MD	3.7 GWh	3
#23	Caroline County, MD	1.3 GWh	2
#1	Calvert County, MD	14.6 TWh	2

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

Totals are based on the most recent 12 months net generation

List of All Maryland Counties