The following tables disaggregate revenue by major source for the periods presented. The tables also include a reconciliation of the disaggregated revenue by reportable segments. For more information on Basin Electric’s business segments, see Note 14.


	Three Months Ended March 31, 2026
	Electric Utility		Gasification		Coal and Limestone Operations		Elimination of Intersegment		Total
	(In thousands)
Sales of electricity to members	$	600,778	$	—	$	—	$	—	$	600,778
Sales of electricity to non-members	68,804		—		—		—		68,804
Synthetic natural gas	—		42,056		—		—		42,056
Fertilizer and DEF products	—		55,900		—		—		55,900
Other byproducts	—		16,895		—		—		16,895
Lignite coal	—		—		79,062		(30,966)		48,096
Miscellaneous	2,007		344		7,065		—		9,416
Revenue from contracts with customers	671,589		115,195		86,127		(30,966)		841,945
Other revenue	—		(742)		—		—		(742)
Total operating revenue	$	671,589	$	114,453	$	86,127	$	(30,966)	$	841,203


	Three Months Ended March 31, 2025
	Electric Utility		Gasification		Coal and Limestone Operations		Elimination of Intersegment		Total
	(In thousands)
Sales of electricity to members	$	555,678	$	—	$	—	$	—	$	555,678
Sales of electricity to non-members	59,317		—		—		—		59,317
Synthetic natural gas	—		39,888		—		—		39,888
Fertilizer and DEF products	—		51,411		—		—		51,411
Other byproducts	—		18,689		—		—		18,689
Lignite coal	—		—		70,974		(28,604)		42,370
Miscellaneous	2,577		329		6,853		—		9,759
Revenue from contracts with customers	617,572		110,317		77,827		(28,604)		777,112
Other revenue	861		639		—		—		1,500
Total operating revenue	$	618,433	$	110,956	$	77,827	$	(28,604)	$	778,612