Electricity Generation Aggregated by Oregon County

State Rank	County	Net Generation (Past Year)	Power Plants
#1	Umatilla County, OR	10.7 TWh	17
#2	Sherman County, OR	10.5 TWh	12
#3	Morrow County, OR	9.1 TWh	22
#4	Wasco County, OR	6.4 TWh	7
#5	Columbia County, OR	6.1 TWh	3
#6	Gilliam County, OR	4.0 TWh	12
#7	Multnomah County, OR	3.7 TWh	7
#8	Klamath County, OR	3.5 TWh	24
#9	Wallowa County, OR	1.9 TWh	2
#10	Jefferson County, OR	1.3 TWh	10
#11	Baker County, OR	1.1 TWh	9
#12	Clackamas County, OR	866.0 GWh	37
#13	Jackson County, OR	801.1 GWh	14
#14	Lane County, OR	708.0 GWh	12
#15	Douglas County, OR	587.1 GWh	15
#16	Linn County, OR	502.3 GWh	8
#17	Marion County, OR	434.3 GWh	30
#18	Crook County, OR	365.6 GWh	5
#19	Malheur County, OR	356.3 GWh	15
#20	Union County, OR	282.9 GWh	2
#21	Lake County, OR	273.5 GWh	19
#22	Clatsop County, OR	168.4 GWh	2
#23	Harney County, OR	93.5 GWh	4
#24	Deschutes County, OR	88.8 GWh	8
#25	Benton County, OR	72.8 GWh	3
#26	Yamhill County, OR	65.6 GWh	15
#27	Lincoln County, OR	56.2 GWh	1
#28	Hood River County, OR	43.7 GWh	4
#29	Polk County, OR	7.1 GWh	8
#30	Washington County, OR	4.6 GWh	6

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 Oregon Counties