Power Outage Risk & Generator Size in ZIP 77002 (Houston, TX)
Primary Utility: Reliant Energy Retail Services (Retail Power Marketer) · Avg 21.2 hrs/yr annual outage time · Residential rate 17.38 ¢/kWh.
Dual-Fuel Home Backup Generator (7,500W–10,500W) + 30A Transfer Switch
Your local grid averages 21.2 hrs/yr of blackout time per year (601 min average restoration per outage). A 7,500W–10,500W gas/propane generator keeps your fridge, sump pump, and heating/cooling running through multi-hour severe weather.
⚡ Home Backup Wattage Sizer for ZIP 77002 (Houston, TX)
Check the appliances you need to keep running during a blackout. We calculate your continuous running watts, highest motor starting surge, and 20% NEC safety headroom automatically.
🌩️ Severe Weather Storms vs. Everyday Grid Equipment Outages
U.S. EIA Form 861 measures utility blackouts both With Major Event Days (hurricanes, ice storms, derechos, high winds) and Without Major Event Days (everyday tree limbs, transformer trips, and equipment aging):
Electric Utility Reliability & Rate Comparison for ZIP 77002
Source: Official U.S. Energy Information Administration (EIA Form 861) utility filings and DOE OpenEI service territory lookups. SAIDI is total annual outage minutes per customer; SAIFI is annual outage frequency; CAIDI is average restoration minutes per outage. How we grade utilities.
| Electric Utility | Service Status & Type | Outages / Yr (SAIFI) | Normal Grid (No Storms) | Total Outage Time (With Storms) | Avg Restoration (CAIDI) | Residential Rate | Reliability Grade |
|---|---|---|---|---|---|---|---|
| Reliant Energy Retail Services EIA #15847 (861-S · TX Grid Avg) · 1,548,250 customers | Serves This Area Retail Power Marketer | 2.11x / yr | 129 min (2.2 hr) | 1271 min (21.2 hr) | 601 min | 17.38 ¢/kWh | Grade F · Severe |
| Oncor Electric Delivery Company LLC EIA #44372 (Utility Standard) · 4,013,062 customers | In-State Comparison Investor-Owned | 1.71x / yr | 67 min (1.1 hr) | 532 min (8.9 hr) | 311 min | 14.96 ¢/kWh | Grade D · High |
| CenterPoint Energy EIA #8901 (IEEE 1366) · 2,847,806 customers | In-State Comparison Investor-Owned | 3.70x / yr | 150 min (2.5 hr) | 4316 min (71.9 hr) | 1166 min | 14.96 ¢/kWh | Grade F · Severe |
| AEP Texas Central Company EIA #3278 (IEEE 1366) · 913,164 customers | In-State Comparison Investor-Owned | 1.63x / yr | 150 min (2.5 hr) | 228 min (3.8 hr) | 140 min | 14.96 ¢/kWh | Grade B · Moderate |
| City of San Antonio - (TX) EIA #16604 (IEEE 1366) · 865,914 customers | In-State Comparison Municipal | 1.15x / yr | 62 min (1.0 hr) | 74 min (1.2 hr) | 64 min | 12.43 ¢/kWh | Grade A · Low |
| Austin Energy EIA #1015 (IEEE 1366) · 507,291 customers | In-State Comparison Municipal | 0.96x / yr | 76 min (1.3 hr) | 92 min (1.5 hr) | 96 min | 12.58 ¢/kWh | Grade A · Low |
| Entergy Texas Inc. EIA #55937 (IEEE 1366) · 457,369 customers | In-State Comparison Investor-Owned | 3.46x / yr | 305 min (5.1 hr) | 1728 min (28.8 hr) | 500 min | 13.66 ¢/kWh | Grade F · Severe |
| Pedernales Electric Coop, Inc EIA #14626 (IEEE 1366) · 405,587 customers | In-State Comparison Cooperative | 0.79x / yr | 57 min (1.0 hr) | 57 min (1.0 hr) | 72 min | 12.22 ¢/kWh | Grade A · Low |
Closest city report: Houston, TX Power Outage Risk & Generator Sizer (2.4 mi from ZIP 77002 center) · Browse all Texas cities & ZIPs.
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