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United States β€Ί Illinois β€Ί Cook County

Cook County, IL solar installation & market data

Updated October 1, 2026 By The SolarDNA Data Team
Cook County has 25,015 solar installations across 162 zip codes at a median installed cost of $7.80/W, installations down 18.1% over the trailing twelve months, and an installs-weighted Market Score of 41.
Active installations
25,015
Zip markets
162
Median cost
$7.80/W
12-mo growth
β–Ό 18.1%
Installers active
144
41
County Market Score
Good Β· installs-weighted across 162 zips
Best zip in Cook County scores higher than 89% of U.S. zip markets.
Versus Illinois

How Cook County compares with the state

Installed cost
$1.24/W above
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
22.19%
of 112.7K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
β–² 23.1%
residential solar added in Illinois, 12 months through Jul 2026
Statewide market
136.9K systems
4.0% of homes Β· utility-reported through Jul 2026
Next-12-month outlook: 2,827–3,455 installs (midpoint 3,141)
Trailing-12-month installs carried forward at half the observed growth rate (capped at Β±30%), with a Β±10% band. Not a forecast of permits or policy.
Growth & pricing

Cook County by year

3,454 installs in the trailing twelve months vs 4,215 before

Installations by year
Median installed cost, $/W DC by year
Installer comp set

Who installs in Cook County

Summed across every zip in the county

Export CSV
#InstallerInstalls12-moZips$/W
1SUNRUN3,2271,467136β€”
2BRIGHT PLANET SOLAR534334113β€”
3FREEDOM FOREVER360172105β€”
4CERTASUN28514087β€”
5FRESH COAST SOLAR28314681β€”
6LGCY POWER1028466β€”
7TRON SOLAR964161β€”
8TESLA863246β€”
9WINDFREE WIND & SOLAR ENERGY854450β€”
10AILEY SOLAR ELECTRIC793442β€”
11VIVINT SOLAR DEVELOPER76839β€”
12BLUE RAVEN SOLAR74135β€”
13SUNPOWER686845β€”
14BRS FIELD OPS663939β€”
15ION SOLAR515039β€”
16KAPITAL ELECTRIC401621β€”
17GOODPWR403128β€”
18PALMETTO SOLAR351021β€”
19SPARC SOLAR353323β€”
20GREEN GRIDS SOLAR343329β€”
21WINDFREE SOLAR34924β€”
22REVOLUTION ENERGY SYSTEMS332226β€”
23QUALITY SOLAR322326β€”
24EARTH WIND AND SOLAR ENERGY301720β€”
25TITAN SOLAR POWER29725β€”
Zip markets

Zips in Cook County

Ranked by installations Β· click for the zip market

ZipInstalls$/WScore
60411663β€”35 D
60629608β€”38 D
60103512β€”37 D
60107502β€”44 C
60652443β€”34 D
60473439β€”34 D
60402437β€”43 C
60643424β€”49 B
60453405β€”43 C
60634393β€”43 C
60804391β€”43 C
60620367β€”37 D
60628366β€”43 C
60478363β€”40 C
60638355β€”41 C
60076347β€”43 C
60053344β€”43 C
60193338β€”43 C
60617333β€”41 C
60067332β€”43 C
60169325β€”43 C
60619325β€”43 C
60409316β€”43 C
60443304β€”43 C
60630302β€”43 C
60641293β€”42 C
60192281β€”42 C
60452280β€”42 C
60004280β€”42 C
60016279β€”42 C
60632273β€”42 C
60304272β€”42 C
60056271β€”42 C
60302267β€”42 C
60062263β€”42 C
60419263β€”50 B
60007261β€”42 C
60438256β€”42 C
60618230β€”42 C
60639230β€”42 C
60462223β€”42 C
60025220β€”42 C
60625215β€”42 C
60201213β€”42 C
60707208β€”42 C
60018206β€”42 C
60477206β€”42 C
60803202β€”42 C
60459202β€”42 C
60714200β€”42 C
60153190β€”42 C
60467187β€”42 C
60202184β€”42 C
60154184β€”42 C
60429181β€”42 C
60077176β€”42 C
60194170β€”42 C
60430165β€”42 C
60426164β€”42 C
60160163β€”42 C
60164159β€”42 C
60068158β€”42 C
60647156β€”42 C
60074155β€”42 C
60805154β€”42 C
60445153β€”42 C
60827153β€”42 C
60422149β€”42 C
60513146β€”42 C
60131146β€”42 C
60090144β€”42 C
60091143β€”42 C
60631143β€”42 C
60008141β€”42 C
60466140β€”42 C
60651138β€”42 C
60546134β€”42 C
60525131β€”42 C
60646128β€”42 C
60406127β€”42 C
60005124β€”42 C
60712121β€”42 C
60706117β€”42 C
60104115β€”42 C
60130113β€”42 C
60655109β€”42 C
60608109β€”42 C
60609108β€”42 C
60425105β€”42 C
60637105β€”42 C
6065698β€”41 C
6064598β€”41 C
6046596β€”41 C
6052695β€”41 C
6062391β€”41 C
6045788β€”41 C
6063387β€”41 C
6064085β€”41 C
6062284β€”41 C
6047184β€”41 C
6065983β€”41 C
6064982β€”41 C
6053476β€”41 C
6016375β€”41 C
6045573β€”41 C
6002669β€”41 C
6055863β€”41 C
6061463β€”41 C
6015562β€”41 C
6062661β€”41 C
6007059β€”41 C
6065758$7.8031 F
6020358β€”41 C
6048257β€”41 C
6009357β€”41 C
6030557β€”41 C
6017657β€”41 C
6016257β€”41 C
6063657β€”41 C
6041555β€”41 C
6017355β€”41 C
6047554β€”41 C
6064454β€”41 C
6046350β€”41 C
6046948β€”41 C
6050147β€”41 C
6061546β€”41 C
6061243β€”41 C
6017143β€”41 C
6066042β€”41 C
6045642β€”41 C
6062441β€”41 C
6065340β€”41 C
6046440β€”41 C
6061340β€”41 C
6062138β€”41 C
6046131β€”41 C
6045831β€”41 C
6061630β€”41 C
6019530β€”41 C
6048029β€”41 C
6016524β€”41 C
6047619β€”41 C
6002218β€”41 C
6047218β€”41 C
6060511β€”41 C
6041810β€”41 C
606429β€”41 C
606078β€”41 C
606105β€”41 C
600434β€”41 C
606062β€”41 C
600952β€”41 C
603012β€”41 C
606911β€”42 C
606021β€”41 C
606041β€”41 C
600651β€”41 C
601411β€”41 C
606541β€”41 C
606111β€”41 C
601591β€”41 C