PSPS outage backup planning for LA homes.
Battery sizing, critical loads, generator alternatives, and the SGIP Equity Resiliency rebate that can pay for your entire Powerwall system. Real planning data for LA homeowners facing increasing PSPS frequency.
PSPS basics for LA homeowners.
Public Safety Power Shutoff (PSPS) events are utility-initiated power outages during high fire risk weather (Santa Ana winds, low humidity, high temperatures). SCE, PG&E, and SDG&E run PSPS events to prevent wildfires from utility equipment failures during dangerous conditions.
LA PSPS frequency by territory (2024-2025 data):
| Utility | Typical PSPS Events/Year | Avg Duration | Affected LA Areas |
|---|---|---|---|
| SCE | 3-7 events | 12-36 hours | Foothill cities, Pasadena, Burbank-adjacent, Pacific Palisades, Malibu, Calabasas |
| LADWP | 0-1 events | 2-12 hours | Limited; mostly weather-related not PSPS |
| BWP, GWP, PWP | Rare | Variable | Burbank, Glendale, Pasadena municipal customers |
Critical loads inventory.
Before sizing backup, document what MUST run during an outage:
| Load Category | Typical Wattage | Daily Energy (kWh) |
|---|---|---|
| Refrigerator + freezer | 100-200W continuous, 600W peak | 3.0 kWh |
| Lighting (LED, partial home) | 50-200W | 1.5 kWh |
| WiFi router + modem + networking | 30-60W | 0.8 kWh |
| Phone/laptop charging | 15-50W | 0.3 kWh |
| Medical (CPAP, oxygen concentrator) | 30-100W | 1.0 kWh |
| TV/entertainment (intermittent) | 50-200W (when on) | 0.5 kWh |
| BASELINE CRITICAL LOADS | — | ~7 kWh/day |
| + HVAC (intermittent, partial use) | 2,000-4,000W | +5-15 kWh/day |
| + EV charging | 3,840-11,500W | +8-30 kWh per EV |
Battery sizing for typical PSPS scenarios.
| Scenario | Required Battery | Notes |
|---|---|---|
| Critical loads only, 24 hr outage | 1× Powerwall 3 (13.5 kWh) | ~2 days of critical-only backup |
| Critical + AC use, 24 hr outage | 2× Powerwall 3 (27 kWh) | Whole-home including AC |
| Critical + AC + 1 EV charge, 24 hr outage | 2× Powerwall 3 + solar recharge | Solar must recharge battery during day |
| Whole-home + 2 EVs, 36 hr outage | 3× Powerwall 3 (40.5 kWh) + solar | Full grid-independence configuration |
| Medical equipment + extended outage | 2-3× Powerwall 3 | SGIP Equity Resiliency rebate eligible |
SGIP Equity Resiliency — battery rebates for qualifying homes.
California’s SGIP Equity Resiliency budget provides battery rebates for qualifying homes. Eligibility:
- →Medical baseline customers — homes with documented medical equipment requiring electricity
- →High Fire Threat District (HFTD) residents — Pacific Palisades, Altadena, Mandeville Canyon, parts of Bel Air, Malibu, Calabasas, foothill cities all qualify
- →Income-qualified households — under 80% Area Median Income
For a typical 27 kWh Powerwall system (2 units), SGIP Equity Resiliency incentives may be available for qualifying homes; amounts depend on program funding, eligibility, and utility approval, and can substantially offset system cost in some cases. Home Upgrade Specialist is not a tax advisor. It may also stack with a federal tax credit, if eligible (subject to current law).
Powerwall vs generator for PSPS — quick answer.
For most LA PSPS scenarios, Powerwall wins. Reasons:
- →PSPS conditions (Santa Ana winds + sunshine) are PERFECT for solar generation — battery recharges during the day
- →Powerwall switches instantly (milliseconds) vs generator (10-30 seconds)
- →No fuel storage, no maintenance, no noise (Beverly Hills HOA-friendly)
- →A federal tax credit (if eligible) + potential SGIP Equity Resiliency rebate
Generator still wins for: extended multi-day outages without sunlight, very large continuous loads (multiple AC + pool pumps simultaneously), or budget-constrained installs. See full Powerwall vs Generator comparison →
Frequently asked questions
What is a PSPS event in California?
PSPS (Public Safety Power Shutoff) is a utility-initiated power outage during high fire risk weather conditions (Santa Ana winds, low humidity, high temperatures). SCE, PG&E, and SDG&E run PSPS events to prevent wildfires from utility equipment. Most affect 50,000-300,000+ customers and last 8-72 hours. LADWP territory has fewer PSPS events than SCE territory.
How do I prepare my LA home for PSPS outages?
Three-tier preparation: (1) Critical-loads inventory — fridge, medical equipment, networking, lighting. (2) Backup power source — Tesla Powerwall (silent, solar-rechargeable, recommended) or whole-house generator (longer runtime, fuel-dependent). (3) Emergency supplies — flashlights, battery banks, food/water, manual can opener. Most LA outages are now 8-24 hours; sizing for 36 hours provides comfortable margin.
Are SGIP battery rebates available for LA PSPS preparation?
Yes for SCE customers in high-fire-zone areas. California’s SGIP Equity Resiliency budget provides battery rebates for battery installations in qualifying homes (medical baseline customers, residents of High Fire Threat Districts, or income-qualified households). SGIP Equity Resiliency incentives may be available for qualifying homes; amounts depend on program funding, eligibility, and utility approval, and can substantially offset system cost in some cases. Home Upgrade Specialist is not a tax advisor.
Get your backup readiness plan.
We inventory your critical loads, size your battery, check SGIP Equity Resiliency eligibility, and install before peak fire season. Tesla Certified Premium Installer.
