CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue
Total revenue	$ 38,374	$ 33,999	$ 70,886	$ 59,468
Cost of Revenue
Total cost of revenue	25,574	24,624	47,548	74,284
Gross profit (loss)	12,800	9,375	23,338	(14,816)
Operating expenses:
Sales and marketing	7,250	10,944	14,042	22,070
Research and development	9,993	15,281	21,321	29,417
General and administrative	8,900	15,846	22,466	34,406
Impairment of goodwill	0	547,152	0	547,152
Total operating expenses	26,143	589,223	57,829	633,045
Loss from operations	(13,343)	(579,848)	(34,491)	(647,861)
Other income (expense), net:
Interest expense	(4,072)	(4,631)	(8,362)	(9,338)
Gain on extinguishment of debt	220,047	0	220,047	0
Change in fair value of derivative liability	0	1,477	0	1,477
Other income, net	374	794	870	1,360
Total other income (expense), net	216,349	(2,360)	212,555	(6,501)
Income (loss) before provision for income taxes	203,006	(582,208)	178,064	(654,362)
Provision for income taxes	(475)	(62)	(533)	(215)
Net income (loss)	$ 202,531	$ (582,270)	$ 177,531	$ (654,577)
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 24.31	$ (71.81)	$ 21.48	$ (81.74)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (1.79)	$ (71.81)	$ (4.54)	$ (81.74)
Net income (loss) attributable to Stem common stockholders, basic	$ 202,531	$ (582,270)	$ 177,531	$ (654,577)
Net loss attributable to Stem common stockholders, diluted	$ (15,160)	$ (582,270)	$ (38,205)	$ (654,577)
Weighted-average shares used in computing net income (loss) per share to common stockholders, basic (in shares)	8,330,679	8,107,947	8,263,378	8,008,477
Weighted-average shares used in computing net loss per share to common stockholders, diluted (in shares)	8,481,799	8,107,947	8,414,498	8,008,477
Solar software
Revenue
Total revenue	$ 9,521	$ 7,905	$ 18,375	$ 15,697
Edge hardware
Revenue
Total revenue	12,086	11,134	22,349	19,182
Project and professional services
Revenue
Total revenue	2,330	1,323	4,146	2,683
Storage software & managed services
Revenue
Total revenue	9,003	5,875	16,054	11,563
Battery hardware resale
Revenue
Total revenue	5,434	7,762	9,962	10,343
Cost of services and other
Cost of Revenue
Total cost of revenue	14,262	10,955	25,675	20,939
Cost of hardware
Cost of Revenue
Total cost of revenue	$ 11,312	$ 13,669	$ 21,873	$ 53,345