Restaurant emergency power: refrigeration drives the decision.
Restaurant emergency power planning focuses on protecting refrigeration (food inventory), POS systems (revenue continuity), and emergency lighting (life safety).
By Steven Lockhart · Reviewed by Alex Towery, C-10 #989290
Updated 2026-06-16
Restaurant emergency power scope varies by priority: minimum (life safety only): emergency lighting via battery-backed fixtures, exit signs, alarm system. Standard (refrigeration protection): generator or battery system sized for walk-in cooler/freezer plus essential lighting. Comprehensive (full operation continuity): generator sized for full kitchen operation enabling restaurant to continue serving during outages. Cost scales from $3,000 (minimum) to $40,000+ (comprehensive).
01Three backup power tiers for restaurants.
Minimum (life safety only): emergency lighting via battery-backed fixtures (typically integrated with fixture or separate emergency battery units), illuminated exit signs (battery-backed), alarm system battery backup. Code-required for restaurant occupancy. Cost typically $3,000-$8,000 included in restaurant TI scope.
Standard (refrigeration protection): generator sized for walk-in cooler/freezer plus essential lighting plus POS power. Typical 14-22 kW propane or natural gas generator with essential loads sub-panel. Cost $14,000-$22,000 including transfer switch. Most common Marin restaurant backup approach for established restaurants.
02What's worth backing up.
Walk-in refrigeration
Highest priority — food inventory in walk-ins can represent $5,000-$25,000+ in product depending on restaurant size. Extended outages cause total loss. Generator backup for walk-in compressors typically pays for itself preventing 1-2 outage-related inventory losses.
POS systems and credit card processing
POS down means cash-only operation or service stop. Modern restaurants are highly POS-dependent. UPS battery backup for POS terminals plus network equipment costs $400-$1,500 total — minimal investment for revenue continuity.
Essential lighting and ventilation
For restaurants planning to continue operation during outages: kitchen lighting, hood ventilation (if cooking continues), dining area minimum lighting. Hood ventilation electrical-coupled to hood-fire suppression — must operate during cooking regardless of outage status. Generator scope includes this if continued operation is the goal.
03Marin-specific considerations.
PSPS events common in Marin (5-15 events per year typical) and unpredictable — generator backup capability shifts from optional to operational necessity for restaurants in fire-prone areas. Natural gas service typically continues during PSPS (gas infrastructure buried, lower wildfire risk), so natural gas generators provide reliable backup during typical PSPS events.
Battery storage emerging as alternative to generators for shorter outages and partial backup. Tesla Powerwall or commercial battery systems can support refrigeration and POS for 12-24 hours without generator. Combined battery + generator provides best-of-both — battery handles short outages silently, generator activates for extended outages or when battery depletes.
Common questions.
Do restaurants need backup power?
Required: emergency lighting and exit signs (code-mandated for restaurant occupancy). Recommended: refrigeration backup (protects inventory, prevents food waste from extended outages). Optional but valuable: full operation continuity backup (continues restaurant operation during outages). Decision depends on operational priorities and outage frequency at restaurant location.
What size generator for a restaurant?
Minimum scope (refrigeration + essential lighting + POS): 14-22 kW typically. Standard scope (above plus selected kitchen equipment): 22-30 kW. Full operation continuity: 30-48 kW typically, sometimes more for large operations. Specific sizing based on essential loads analysis.
Can I add backup power after restaurant opens?
Yes — backup power addition possible post-opening. Adds project: generator install, transfer switch, essential loads sub-panel, circuit migration. Cost similar to including in original TI scope but with operational disruption during install. Most cost-effective to include in original TI.
How do you handle pricing — flat fee or hourly?
Both, depending on scope. Routine service calls and predictable scope (panel replacement, EV charger install, transfer switch install, fixture replacement) are flat-fee quoted up front. Diagnostic visits and emergency scope are hourly because we don't know what we'll find. Either way, you get a written quote before work starts on anything significant, and we don't proceed beyond the quote without your sign-off.
How quickly can you schedule?
Depends on scope and season. Emergency dispatch: same-day across Marin County (1-3 hours business hours, 1-4 hours after-hours). Same-day standard service: 3-6 hours from call when capacity allows; otherwise next business day. Scheduled service work: 1-3 weeks typical. Larger projects requiring permits and PG&E coordination: 4-12 weeks depending on scope. We're upfront about timeline at the quote stage.
What warranty do you offer on work?
Our standard residential warranty: 2 years on labor, manufacturer warranty on parts (varies by product — typically 1-10 years). Major installs (panels, generators, EV chargers) often have longer manufacturer warranties (5-10 years). If there's an issue with our work in the warranty period, we come back and fix it at no cost. We also stand behind work past warranty — repeat customers and referrals matter more than a transactional fix.
Are you licensed and insured?
Yes. California State License Board C-10 Electrical Contractor #989290, in good standing. Carry general liability insurance and workers' compensation insurance as required by California law. Bondable on projects requiring it. Happy to provide proof of insurance to clients or property managers on request. License lookup: cslb.ca.gov.
Emergency response across Marin County.
Same-day dispatch for safety scenarios. Typical on-site time 1-3 hours weekday, 1-4 hours after-hours.