Electricity Generation Aggregated by Maryland County

State Rank	County	Net Generation (Past Year)	Power Plants
#2	Prince George's County, MD	8.0 TWh	40
#17	Baltimore County, MD	70.0 GWh	29
#15	Howard County, MD	74.2 GWh	25
#14	Washington County, MD	77.4 GWh	20
#6	Harford County, MD	2.0 TWh	19
#7	Montgomery County, MD	780.3 GWh	18
#8	Garrett County, MD	701.4 GWh	16
#5	Anne Arundel County, MD	3.4 TWh	12
#16	Frederick County, MD	70.9 GWh	11
#9	Baltimore city, MD	380.5 GWh	11
#4	Cecil County, MD	3.7 TWh	9
#10	Queen Anne's County, MD	310.4 GWh	9
#18	Wicomico County, MD	44.5 GWh	8
#13	Dorchester County, MD	93.8 GWh	7
#12	Somerset County, MD	158.0 GWh	7
#3	Charles County, MD	3.8 TWh	6
#22	Kent County, MD	17.3 GWh	6
#11	Allegany County, MD	195.8 GWh	5
#19	Worcester County, MD	34.3 GWh	5
#20	Carroll County, MD	24.4 GWh	4
#1	Calvert County, MD	14.9 TWh	3
#23	Talbot County, MD	14.2 GWh	3
#21	Caroline County, MD	17.8 GWh	2

Net Generation data is based on the last 12 months since May 2026

Totals are based on the most recent 12 months net generation

List of All Maryland Counties