Power outages in Mono County, CA

Live outage counts for Mammoth Lakes and the rest of Mono County, updated every 10 minutes from Southern California Edison.

Right now

No live outage data for Mono County yet.

Liberty Utilitiesno live feed

This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.

Serves this county, per federal utility records

From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.

Valley Electric Assn, Incno live feed

This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.

Serves this county, per federal utility records

From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.

Outage map

County outlineSouthern California Edison publishes totals only, not outage locations.

Some utilities publish only how many customers are out, not where. Their outages are in the counts but can't be drawn on the map.

Outage history in Mono County

2014–2025 record

Mono County averaged 69.3 significant outages a year in 2023–2025, more than most California counties.

In the 12 months to December 2025, there were 88. Half were over within 8 hours; the longest lasted 5.5 days, starting October 8, 2025.

The largest on record began June 29, 2021, with 24,313 customers out at once.

69.3significant outages a year (2023–2025)

At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.

4.5 hourstypical (median) length

Half of significant outages here ended sooner than this, and half lasted longer.

13 dayslongest on record (March 2023)

24,313most customers out at once

Largest events (start)	Peak out	Lasted i How long this area stayed at or above the significant-outage line, not how long any one home was without power.	Customer-hours i Customers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours.
June 29, 2021	24,313	5 hours	22,203
October 5, 2019	15,764	14 hours	155,128
March 24, 2025	11,699	5 hours	55,526
October 7, 2022	9,898	8 hours	17,887
August 30, 2025	9,171	22 hours	95,916

Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).

From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.

If your power is out

Report it to your utility

Southern California Edison: outage map and reporting
Stay at least 35 feet from downed power lines and report them right away.

Food safety

0–4 hKeep the fridge closed. It keeps food cold for about 4 hours.
4 h+Throw out meat, dairy and leftovers that have been above 40°F for more than 2 hours.
24 hA half-full freezer holds about 24 hours if kept closed.
48 hA full freezer holds about 48 hours.

Generators, heat and cold

Run generators outside only, at least 20 feet from windows and doors. Never in a garage.
Use a battery-powered carbon monoxide alarm.
Never heat your home with a gas stove or oven.