Power Outages in Mariposa County, CA
Pacific Gas & Electric Co. publishes only a system-wide total, not county figures. In 2025, the average customer here lost power for about 32.7 hours.
Mariposa County, CA is served by 1 tracked utility.
Cite this data
- URL
- https://massoutage.com/california/mariposa-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Mariposa County, CA". https://massoutage.com/california/mariposa-county
Pacific Gas & Electric Co. publishes no county-level figures.
0.0%of this county's ~10,905 customers are served by utilities with a county-level live feed.
System-wide total only, no county split: Pacific Gas & Electric Co..
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Pacific Gas & Electric Co. | Live · total only | not by county | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Mariposa 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.
By ZIP code (8)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 95338 | 157 | 12 | 130 | ≤11 |
| 95311 | 40 | ≤11 | 36 | ≤11 |
| 93601 | 18 | 0 | 14 | 0 |
| 95306 | 17 | ≤11 | 15 | 0 |
| 95389 | ≤11 | 0 | ≤11 | 0 |
| 95345 | ≤11 | 0 | ≤11 | ≤11 |
| 95325 | ≤11 | 0 | ≤11 | 0 |
| 95318 | ≤11 | 0 | ≤11 | ≤11 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Mariposa County or any town and utility in it.
No active NWS alerts for Mariposa County right now.
Mariposa County has been under 24 National Weather Service alerts recently, most recently a Red Flag Warning on October 17, 2026.
- Heat Advisory ×15
- Red Flag Warning ×7
- Child Abduction Emergency ×1
- Special Weather Statement ×1
Latest Mariposa County, CA outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 11m
- OUTAGE BEGAN
Outage began: 156 customers out (2.1% of the county)
- RESOLVED
Power restored after 2h 30m
- OUTAGE BEGAN
Outage began: 195 customers out (2.7% of the county)
- RESOLVED
Power restored after 19m
- OUTAGE BEGAN
Outage began: 156 customers out (2.1% of the county)
- RESOLVED
Power restored after 3h 34m
- RESTORATION ETA
Restoration now estimated September 17, 2026
Hardest-hit cities in Mariposa County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Mariposa County went about 32.7 hours without power. Peak simultaneous outage on record reached 7,262 customers.
The US EIA reports California utilities averaged 6.0 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 32.7 hrs.
Worst year here was 2021 (peak 7,262 customers out) · decade average 64.6 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2018 | 210 | 3,289 | 30.9 |
| 2019 | 433 | 7,262 | 61.5 |
| 2020 | 484 | 7,262 | 28.7 |
| 2021 | 404 | 7,262 | 136.1 |
| 2022 | 402 | 3,863 | 83.1 |
| 2023 | 407 | 7,262 | 110.3 |
| 2024 | 410 | 4,100 | 33.9 |
| 2025 | 400 | 3,844 | 32.7 |
Cost of power in Mariposa County
ENERGY & AI DEMAND →Estimated residential electricity price for Mariposa 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.
- Pacific Gas & Electric Co.37.5¢1,738,444 cust
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.
Relatively High wildfire exposure · 64.6 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability very high: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Mariposa County: FAQ
- How often does Mariposa County, CA lose power?
- Based on EAGLE-I records, Mariposa County, CA logged 400 distinct outage events in 2025, averaging about 32.7 hours without power per customer over the year.
- What was the worst power outage in Mariposa County, CA?
- The largest tracked outage peaked at 7,262 customers without power, beginning March 10, 2021 and lasting about 16h.
- Is there a power outage in Mariposa County, CA right now?
- No major outage is currently reported for Mariposa County, CA. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Mariposa County, CA?
- Tracked electric providers include Pacific Gas & Electric Co..
Outages are tracked at the county level; these ZIP codes fall within Mariposa County.
93623, 95306, 95311, 95318, 95325, 95338, 95345, 95389
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Pacific Gas & Electric Co. | 4.5 hrs | Live · total 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 California customers). Machine-readable data: /api/v1/counties/06043 and /api/v1/counties/06043/history.