All battery backup plans
Eos offers 5 residential battery backup plans from 9 to 45 kWh and 5 commercial plans from 36 to 135 kWh. Every system uses the modular Sigenergy platform with a 10-year manufacturer warranty.
Residential plans
- EssentialCritical circuit protection
9 kWh nominal (8.76 kWh usable), 11.5 kW continuous output, up to 6 hours runtime, $9,915 cash or from $87.45/month financing. Best for: Apartments, condos, or homes that only need fridge, Wi-Fi, and lights covered.
- PlusFull day coverage
18 kWh nominal (17.52 kWh usable), 11.5 kW continuous output, up to 12 hours runtime, $13,194 cash or from $141.42/month financing. Best for: Most homes, with enough capacity to ride out a full day with comfort.
- ProThe generator alternative
27 kWh nominal (26.28 kWh usable), 11.5 kW continuous output, up to 18 hours runtime, $16,472 cash or from $169.9/month financing. Best for: Homeowners who want to replace or avoid buying a generator entirely.
- PremiumExtended whole-home coverage
36 kWh nominal (35.04 kWh usable), 11.5 kW continuous output, up to 24 hours runtime, $19,751 cash or from $198.38/month financing. Best for: Larger homes that want full-day-plus coverage with simple single-controller install.
- UltimateMaximum capacity
45 kWh nominal (43.80 kWh usable), 11.5 kW continuous output, up to 30 hours runtime, $23,030 cash or from $226.86/month financing. Best for: Large homes, extended outage protection, or homeowners with high energy usage.
Commercial plans
- Commercial EssentialCritical backup for small operations
36 kWh nominal (35.04 kWh usable), 11.5 kW continuous output, up to 24 hours runtime, $19,751 cash. Best for: Small offices, clinics, and retail that need critical-load backup without a generator.
- Commercial PlusDual-controller business backup
54 kWh nominal (52.56 kWh usable), 23 kW continuous output, up to 36 hours runtime, $29,069 cash. Best for: Mid-size commercial operations with dual-zone HVAC or higher continuous load.
- Commercial ProFull-day commercial coverage
72 kWh nominal (70.08 kWh usable), 23 kW continuous output, up to 48 hours runtime, $35,626 cash. Best for: Larger commercial sites needing extended runtime at sustained load.
- Commercial PremiumExtended commercial runtime
90 kWh nominal (87.60 kWh usable), 23 kW continuous output, up to 60 hours runtime, $42,184 cash. Best for: Commercial operations with high sustained load or multi-day outage exposure.
- Commercial UltimateMaximum commercial capacity
135 kWh nominal (131.40 kWh usable), 34.5 kW continuous output, up to 90 hours runtime, $61,338 cash. Best for: Large commercial sites, industrial operations, or critical infrastructure.