Power Out Map
– 0% of Tehama out 0 customers out in California

Power outage history

Tehama County California

22hours

without power for the average customer in a typical year, 2018–2025

16th most of 56 in California 3.4× the national median

Worst outage on record Oct 27, 2019 60% of customers out · 90% back in 41 hours
Hours without power, average customer per year 22h / yr State average 6.2 h · national median 6.6 h
Major outages a year 6.5 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 3hours Median across major outages, from the peak
Longest single outage 5.0days Dec 13, 2021, over 1% of customers out
Outage hours on storm days 57% Share falling on days with a NOAA storm report here
Worst year 2019 2.8 days without power, average customer
Electricity customers 28,134 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Tehama's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2019 was the worst well-recorded year, at 2.8 days for the average customer. Hatched years have a thin record and are left out of the averages.

Tehama, hours without power per customer

TehamaUS median countyCalifornia average
0 20 40 60 80 ’17 6.5 ’18 67 ’19 17 ’20 32 ’21 10 ’22 19 ’23 19 ’24 9.8 ’25 US 6.6 CA 6.2

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Oct 26, 2019 No storm report 16,890 60% 4.1 d 41 h 702k
Aug 17, 2021 Wildfire 11,358 40% 47 h 23 h 355k
Oct 10, 2019 Windstorm 22,507 80% 45 h 27 h 270k
Oct 9, 2019 No storm report 22,507 80% 11 h 23 h 230k
Feb 24, 2023 Winter storm 15,911 57% 45 h 12 h 159k
Feb 13, 2019 Winter storm 22,391 80% 29 h 26 h 153k
Oct 11, 2021 Wildfire 5,150 18% 38 h 30 h 150k
Oct 9, 2019 Windstorm 22,542 80% 12 h 15 h 135k
Oct 25, 2020 Wildfire 5,329 19% 2.1 d 20 h 117k
Nov 20, 2019 Windstorm 5,944 21% 31 h 28 h 104k
Jun 23, 2018 Heat 12,143 43% 25 h 15 h 90k
Dec 13, 2021 Winter storm 1,089 4% 5.0 d – 75k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +12h 90% by +26h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Tehama from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 43%
  • Wildfire 24%
  • Windstorm 14%
  • Winter storm 13%
  • Heat 4.7%
  • Flooding 0.9%

Who keeps the lights on

Utilities serving Tehama

As each utility reports to the Energy Information Administration for its whole California territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Pacific Gas & Electric Co. Investor Owned 273 208 1.63 37.5 5.1M
WAPA-- Western Area Power Administration Federal – – – – –

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across California

Where it is darkest

Hours / yr64+

All California counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 28,134 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →