2023 Top Illinois Solar Contractors

This is the 2023 list of Top Solar Contractors completing work in Illinois. The kilowatts listed as being installed in the state reflect only kilowatts installed in Illinois in 2022. Companies listed on this state list could be headquartered in other states, participate in any market (residential, commercial, community solar, utility) and provide any installation service (EPC, developer, installer, installation subcontractor, electrical subcontractor, sales partner).

The listed kilowatts installed by each company in Illinois could come from installations in all markets (residential, commercial, community solar, utility) but only within Illinois state lines.

The companies below are a segmented portion of the overall 2023 Top Solar Contractors List, organized by kilowatts (DC) installed in 2022.

For more information on Solar Power World’s annual Top Solar Contractors List and additional sublists, visit our Top Solar Contractors home page.

Illinois Rank	Company	kW Installed In Illinois	Primary Market	Primary Service	Total kW installed in U.S. in 2022	Overall Rank
1	SOLV Energy	214,700.00	Utility	EPC	1,633,040.00	3
2	Signal Energy	116,433.00	Utility	EPC	1,349,231.00	6
3	Inovateus Solar	49,989.00	Utility	EPC	101,932.00	44
4	Quanta Services	33,366.00	Utility	EPC	2,735,152.00	1
5	Knobelsdorff	24,000.00	C&I	EPC	73,370.00	54
6	Nelnet Renewable Energy	19,180.72	Res & Com	EPC	30,003.25	87
7	Radiance Solar	18,884.00	C&I	EPC	215,908.00	32
8	ADT Solar	14,376.10	Residential	Installer	193,293.30	34
9	Nexamp	11,358.50	Community Solar	Developer	106,715.60	42
10	Recon Corp.	10,531.00	Utility	EPC	19,902.00	112
11	Alta Energy Services	10,000.00	Utility	Installation Subcontractor	126,800.00	40
12	New Energy Equity	7,827.00	Community Solar	Developer	26,181.25	95
13	Arch	6,413.84	Res & Com	Installer	17,575.49	117
14	StraightUp Solar	6,095.08	Res & Com	EPC	9,423.86	163
15	Continental Energy Solutions	5,808.41	C&I	EPC	6,079.01	200
16	Standard Solar	5,501.00	C&I	Developer	59,688.15	61
17	J. Ranck Electric	5,106.00	Utility	EPC	22,183.81	106
18	eEquals	4,556.64	Residential	Installer	4,591.32	223
19	Windfree Solar	4,062.95	Residential	EPC	4,293.81	230
20	National Solar Service	3,723.50	Residential	Installer	7,957.18	179
21	Fresh Coast Solar	3,683.11	Residential	Installer	4,761.54	219
22	Babcock & Wilcox Solar Energy	3,500.00	Community Solar	EPC	3,500.00	246
23	Veregy	3,341.20	C&I	EPC	10,469.52	155
24	GEM Energy	3,200.00	C&I	EPC	3,886.00	239
25	Core Development Group	2,960.00	C&I	EPC	52,929.71	63
26	SunVest Solar	2,624.00	Utility	Developer	10,690.00	153
27	Titan Solar Power	2,599.93	Residential	Installer	218,375.77	31
28	Tron Solar	2,087.55	Residential	EPC	3,445.94	249
29	Verde Solutions	1,870.61	C&I	EPC	2,784.21	270
30	Eagle Point Solar	1,425.24	Res & Com	EPC	8,876.07	170
31	Stateline Solar	1,346.91	Residential	Installer	1,364.91	332
32	RxSun	1,308.11	Residential	Sales Partner	1,453.92	326
33	ForeFront Power	1,060.00	C&I	Developer	27,801.00	92
34	Tick Tock Energy	1,001.19	Res & Com	Installer	1,021.15	352
35	SunPeak	879.04	C&I	EPC	1,605.54	321
36	LightWave Solar	831.60	C&I	EPC	9,051.81	168
37	Solar One	680.87	C&I	Developer	1,757.99	311
38	Sun Solar	535.69	Residential	EPC	11,077.95	148
39	iBuild Solar	450.00	C&I	Installation Subcontractor	6,379.80	198
40	Dynamic Energy	407.88	C&I	EPC	12,822.16	138
41	Novel Energy Solutions	338.00	C&I	Developer	29,286.52	88
42	Green Home Systems	262.42	Residential	Installer	4,607.77	222
43	PurePoint Energy	214.88	C&I	EPC	581.57	379
44	Unity Solar Group	197.75	Res & Com	Developer	197.75	410
45	Sonne Energy Solutions	162.87	Residential	EPC	180.26	412
46	Endries Solar & Electric	79.90	Residential	Installer	4,295.00	229
47	Astrawatt Solar	48.27	Residential	Installer	4,331.06	227
48	ECG Solar	34.46	Residential	Installer	2,267.60	287
49	Morton Solar	11.20	Residential	Installer	577.87	380
50	ESA	6.09	Res & Com	Developer	15,123.73	122

Illinois Rank

Company

kW Installed In Illinois

Primary Market

Primary Service

Total kW installed in U.S. in 2022

Overall Rank

SOLV Energy

214,700.00

Utility

EPC

1,633,040.00