PV System Fault Diagnosis

Methods and devices for monitoring the operational parameters of photovoltaic systems, detecting anomalies, and diagnosing specific faults like reverse connections, insulation failures, or efficiency drops, often using predictive models.

5,415 US filings from 1,574 companies since 2023 · 2023: 1,452 · 2024: 1,629 · 2025: 1,615 · 2026 YTD: 719

Photovoltaic (Solar Cells)

Top companies

Ranked by filings in this theme since 2023. 2026 is partial.

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	Huawei Digital Power Technologies Co., Ltd.	152	58	39	41	14	+5.1%
2	LG Energy Solution, Ltd.	122	20	42	38	22	-9.5%
3	Solaredge Technologies Ltd.	86	26	29	29	2	0.0%
4	Siemens Aktiengesellschaft	79	28	29	11	11	-62.1%
5	TOYOTA JIDOSHA KABUSHIKI KAISHA	78	17	23	29	9	+26.1%
6	ABB Schweiz AG	69	21	15	20	13	+33.3%
7	Sungrow Power Supply Co., Ltd.	66	13	19	26	8	+36.8%
8	Robert Bosch GmbH	62	18	24	16	4	-33.3%
9	Hyundai Motor Company	59	11	11	22	15	+100.0%
10	Mitsubishi Electric Corporation	59	16	18	17	8	-5.6%
11	Kia Corporation	57	8	11	22	16	+100.0%
12	GM GLOBAL TECHNOLOGY OPERATIONS LLC	53	13	12	21	7	+75.0%
13	HITACHI ENERGY LTD	52	·	14	23	15	+64.3%
14	Schweitzer Engineering Laboratories, Inc.	48	16	14	13	5	-7.1%
15	SCHNEIDER ELECTRIC USA, INC.	47	10	16	14	7	-12.5%
16	Eaton Intelligent Power Limited	44	6	13	12	13	-7.7%
17	Panasonic Intellectual Property Management Co., Ltd.	42	10	11	18	3	+63.6%
18	SMA Solar Technology AG	37	14	11	9	3	-18.2%
19	Bender GmbH & Co. KG	35	9	9	11	6	+22.2%
20	ITRON, INC.	35	14	10	4	7	-60.0%
21	Samsung SDI Co., Ltd.	34	6	3	15	10	+400.0%
22	Aclara Technologies LLC	32	8	7	10	7	+42.9%
23	S&C Electric Company	32	15	10	5	2	-50.0%
24	Schneider Electric Industries SAS	31	13	7	4	7	-42.9%
25	HAMILTON SUNDSTRAND CORPORATION	30	9	12	7	2	-41.7%