Power outages in Grand Terrace, CA

Live outages for Grand Terrace and the surrounding area, updated every 10 minutes. Grand Terrace has 12,936 residents.

Right now

Outages reported

Normal: fewer than 0.1% of customers out. Elevated: 0.1% or more. Major outage: 1% or more.

4,360customers without power in San Bernardino County

A customer is one electric account, usually one home or business, not one person. Utilities count outages this way.

Share of customers unknown

At least one utility here doesn't publish how many customers it serves in this area, so we can't show a percentage.

Updated 7 min ago

We check every utility's outage data every 10 minutes. Each utility updates its own map on its own schedule, usually every 5 to 15 minutes.

PG&E and Southern California Edison doesn't publish a count for Grand Terrace itself; see its ZIP codes below.

Outage map

Grand TerraceSan Bernardino CountyPG&E and Southern California Edison publish 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 San Bernardino County, which includes Grand Terrace

2014–2025 record

San Bernardino County averaged 17.3 significant outages a year in 2023–2025, fewer than most California counties.

In the 12 months to December 2025, there were 30. Half were over within 2.5 hours; the longest lasted 3.7 days, starting January 8, 2025.

The largest on record began January 8, 2025, with 95,972 customers out at once.

17.3significant 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.

45 minutestypical (median) length

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

3.7 dayslongest on record (January 2025)

95,972most 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.
January 8, 2025	95,972	3.7 days	3,101,723
October 26, 2020	62,238	1.8 days	958,004
July 13, 2018	57,794	7 hours	79,430
August 5, 2025	55,242	11 hours	368,830
September 10, 2022	53,475	4.5 hours	102,637

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

PG&E: outage map and reporting
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.