Product Cut Sheet Whole-Home Energy System
Whole-home energy system

Steady power for your whole home. Even when the grid goes down.

A hybrid inverter paired with a smart battery becomes your home's energy hub — delivering clean, conditioned power every day and switching to seamless backup the instant the grid fails. Two sizes; choose the one that fits your home.

Up to 0hrs
backup when the grid's down
0/7
clean, conditioned power
<0ms
switchover — no flicker
Choose your solution

Right-sized power, real peace of mind.

At a glance
Option OneEssential Backup
Option TwoWhole-Home
Inverter
10 kW
12 kW
Battery
10 kWh
16 kWh
Hours of backup · comfort level
~16 hrs
~25 hrs
Best for
Backup + clean power
Whole-home independence
Match it to this home Drag to set average daily use — backup runtime updates instantly.
25kWh / day
10most homes use 20–3060
Option One

Essential Backup

Dependable backup and clean, steady power.
0 kW
Inverter
0 kWh
Battery
  • Keep the essentials on. Fridge, lights, Wi-Fi and key outlets ride right through any outage.
  • Clean, conditioned power. Steady voltage protects sensitive electronics from surges, sags, and rough grid power.
  • Silent, instant switchover. Backup kicks in in the blink of an eye — no fumes, no noise, no fuel.
  • Smart, simple, expandable. Monitor everything from your phone and add a second battery whenever you like.
Backup runtime on a full charge
Critical~39hrs
Lights, fridge, Wi-Fi & phones
Comfortable~16hrs
+ TV, fans, outlets & home office
Max load~8hrs
Full home, including air-conditioning
Best for: 1–3 bedroom homes and apartments that want dependable backup and clean, steady power.

Estimated runtime from a full battery for a home using about 25 kWh/day. Critical ≈ 20% of use (5 kWh/day) · Comfortable ≈ 50% (12.5 kWh/day) · Max load = whole home. Conservative basis: 90% usable depth of discharge and 90% system efficiency. Actual times vary with use and weather.

Every Firefly solution includes

Safe LFP chemistryNon-toxic, non-combustible cells
8-year warrantyInverter & battery · 15-yr design life
App monitoringSee production & savings live
Solar-ready hybridAdd solar panels anytime, no new hardware
For the technically minded

Technical specifications.

Hybrid Inverter Option One10 kW Option Two12 kW
Rated continuous AC output10 kW12 kW
Peak / surge output (10 s)20 kW24 kW
TopologyHybrid (solar + storage + grid)Hybrid (solar + storage + grid)
Max. PV input13 kWp15.6 kWp
MPPT trackers22
Max. battery charge / discharge10 kW12 kW
Peak efficiency97.6%98.0%
Backup transfer time< 20 ms< 20 ms
AC outputSplit-phase 120/240 VSplit-phase 120/240 V
Enclosure ratingIP65 (indoor / outdoor)IP65 (indoor / outdoor)
Operating temperature−25 °C to 60 °C−25 °C to 60 °C
Design life15 years15 years
Warranty8 years8 years
Storage Battery Option One10 kWh Option Two16 kWh
Usable capacity10 kWh16 kWh
Cell chemistryLithium iron phosphate (LFP)Lithium iron phosphate (LFP)
Nominal voltage51.2 V51.2 V
Continuous power5 kW8 kW
Round-trip efficiency≥ 95%≥ 95%
Depth of discharge100%100%
Design life15 years or 6,000 cycles15 years or 6,000 cycles
Scalability (parallel)Up to 4 unitsUp to 6 units
Enclosure ratingIP65IP65
Operating temperature−10 °C to 50 °C−10 °C to 50 °C
Warranty8 years8 years

Specifications are typical values and may vary by configuration and site conditions. Final figures confirmed in your system design.