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Power Outages in McHenry County, IL

Rock Energy Cooperative has not reported outages here, but it only publishesactive outages, so that isn't a confirmed all-clear. Commonwealth Edison Co publishes only a system-wide total, not county figures. In 2025, the average customer here lost power for about 3.0 hours.

McHenry County, IL is served by 2 tracked utilities.

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https://massoutage.com/illinois/mchenry-county
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Not available
Publisher
MassOutage

MassOutage, "Power Outages in McHenry County, IL". https://massoutage.com/illinois/mchenry-county

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McHenry County, IL
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This county Loading live outagesout
No outages reported (partial view)

Rock Energy Cooperative only appearsin feeds while reporting outages, so no report isn't a confirmed all-clear.

Commonwealth Edison Co publishes no county-level figures.

Live status by utility · McHenry County

0.0%of this county's ~144,618 customers are served by utilities with a county-level live feed.

Blind spots

Only visible while reporting outages: Rock Energy Cooperative. Zero here is not a confirmed all-clear.

System-wide total only, no county split: Commonwealth Edison Co.

UtilityFeedOutServed% outSmall outagesIncidentsUtility ETRAs of
Commonwealth Edison CoLive · total onlynot by county------
Rock Energy CooperativeOutages onlynone reported------

Electricity-dependent residents

HHS emPOWER · data October 7, 2026

Medicare beneficiaries in McHenry Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.

Power-dependent
3,050
Oxygen service
688
Dialysis (facility)
285
Home health / hospice
545
By ZIP code (19)
ZIPPower-dependentVentilatorsO2 concentratorsHome dialysis
6014241216272≤11
6005033119249≤11
6001430817212≤11
6009828615203≤11
6010224312165≤11
60051213≤11159≤11
60156165≤11116≤11
60013150≤1198≤11
60152125≤1179≤11
60033102≤1173≤11
6009792≤1182≤11
6008185≤1162≤11
6001285≤1156≤11
6004257≤11460
6007133≤1123≤11
6002133≤11240
6003419012≤11
60180120≤110
60072≤110≤110

Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.

🔔 Alerts for McHenry County, IL

Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for McHenry County or any town and utility in it.

Get alerts for McHenry CountySend updates to your dashboardRSS feed
◢ ACTIVE WEATHER ALERTS · NWS

No active NWS alerts for McHenry County right now.

Recent NWS alert activity · McHenry County

McHenry County has been under 26 National Weather Service alerts recently, most recently a Freeze Warning on October 17, 2026.

  • Flood Watch ×7
  • Flood Advisory ×6
  • Hydrologic Outlook ×5
  • Special Weather Statement ×4
  • Dense Fog Advisory ×2
  • Freeze Warning ×2

Latest McHenry County, IL outage updates

A running log of how this outage has changed, updated automatically as utilities report in.

  1. RESOLVED

    Power restored after 9h 20m

  2. RESTORATION ETA

    Restoration now estimated September 20, 2026

  3. RESTORATION ETA

    Restoration now estimated September 20, 2026

  4. RESTORATION ETA

    Restoration now estimated September 20, 2026

  5. OUTAGE BEGAN

    Outage began: 506 customers out (0.4% of the county)

  6. RESOLVED

    Power restored after 2h 20m

  7. RESTORATION ETA

    Restoration now estimated September 19, 2026

  8. RESTORATION ETA

    Restoration now estimated September 19, 2026

Outage trend · McHenry County, IL
0customers out · peak 32
Data as of Oct 15, 2026 00:30 UTC
McHenry County, IL: customers without power, last 24 hoursPeak 32 customers out; latest 0 as of Oct 15, 2026 00:30 UTC. Each point is the highest reading in its interval.010203040Oct 146 AM12 PM6 PM
Use the arrow keys to read values.
Times in EDT. Shaded stretches had no reading.

Hardest-hit cities in McHenry County

Where this event is concentrated across the county's towns and townships.

  • Crystal Lakeno outage reported

Historical reliability

In 2025, the average customer in McHenry County went about 3.0 hours without power. Peak simultaneous outage on record reached 36,109 customers.

Official state benchmark (EIA 2025)Source: US EIA

The US EIA reports Illinois utilities averaged 2.4 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 3.0 hrs.

A decade of outages (2015–2025)
avg hrs without power / customer
McHenry County average outage hours per customer by year2015–2025: 2015 2.0h, 2016 0.5h, 2017 2.7h, 2018 3.7h, 2019 3.0h, 2020 3.4h, 2021 7.9h, 2022 1.7h, 2023 7.9h, 2024 1.7h, 2025 3.0h. Highlighted: 2021.024682.0h20150.5h20162.7h20173.7h20183.0h20193.4h20207.9h20211.7h20227.9h20231.7h20243.0h2025
Use the arrow keys to read values.

Worst year here was 2021 (peak 30,959 customers out) · decade average 3.4 hrs without power per customer/yr.

YearOutage eventsPeak customers outAvg hrs/customer
201585316,1512.0
20164162,9110.5
201774910,5462.7
201885424,4313.7
201986310,3783.0
202092718,0373.4
202192730,9597.9
20229926,0741.7
20231,02436,1097.9
20241,0444,1491.7
202599013,2503.0

Cost of power in McHenry County

ENERGY & AI DEMAND →

Estimated residential electricity price for McHenry County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.

17.7¢/kWh
estimated residential average
▲ 34% since 2015
vs Illinois avg 19.2¢
vs US avg 20.0¢
BY UTILITY · RESIDENTIAL ¢/kWh

Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.

Worst recorded outages
STARTEDPEAK OUTDURATION
February 22, 202336,1093d 12h
August 10, 202130,9594d 2h
September 25, 201824,4312d 5h
August 10, 202018,0375d 11h
June 8, 201516,1518h 45m
See the biggest power outages in US history →
Natural hazards & outage risk
ELEVATED

Relatively High high winds exposure · 3.4 hrs/yr of outages over the last decade.

TornadoRelatively High
Strong windRelatively High
FloodingRelatively Moderate
All hazard rankings →

Power outages in McHenry County: FAQ

How often does McHenry County, IL lose power?
Based on EAGLE-I records, McHenry County, IL logged 990 distinct outage events in 2025, averaging about 3.0 hours without power per customer over the year.
What was the worst power outage in McHenry County, IL?
The largest tracked outage peaked at 36,109 customers without power, beginning February 22, 2023 and lasting about 3d 12h.
Is there a power outage in McHenry County, IL right now?
No major outage is currently reported for McHenry County, IL. Live coverage depends on whether local utilities report to ODIN.
Which utilities serve McHenry County, IL?
Tracked electric providers include Commonwealth Edison Co.
Nearby counties
Boone CountyCook CountyDeKalb CountyKane County
Cities & towns in McHenry County

Crystal Lake. Outage counts for these communities are reported at the McHenry County level shown above.

ZIP codes in McHenry County

Outages are tracked at the county level; these ZIP codes fall within McHenry County.

60012, 60013, 60014, 60021, 60033, 60034, 60050, 60051, 60071, 60072, 60081, 60097, 60098, 60102, 60142, 60152, 60156, 60180

Electric providers serving this county

From EIA-861 service territory, with official reliability where reported.

ProviderOfficial SAIDI (EIA)LiveReport outage
Commonwealth Edison Co1.3 hrsLive · total only-
Rock Energy Cooperative0.6 hrsOutages only-

Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Illinois customers). Machine-readable data: /api/v1/counties/17111 and /api/v1/counties/17111/history.