San Miguel de Allende

Power that never blinks.

Automatic battery backup designed for the way you live. Lights, internet, refrigerator, water — on, without you lifting a finger.

Get my customized proposal How it works

<20ms switchover
Solar-ready
20 yrs serving Mexico

20 yrs Serving Mexico
<20ms Seamless switchover
100% Automatic
No fuel No fumes, no maintenance

How it works

Power that takes care of itself.

From the grid to your home — Firefly watches over every second.

Always watching

Six ways Firefly keeps your home steady.

Whatever the grid does, your home keeps its calm.

Power outage

When the grid goes dark, your home stays on — most devices won't even flicker.

Weak or unstable power

On low voltage, Firefly switches to clean, steady battery power so your fridge, AC and well pump keep running and last longer.

Poor power quality

Firefly isolates rough incoming power and delivers clean, stable power for sensitive electronics.

Sudden voltage spike

Firefly disconnects instantly, runs your home on battery and solar, then reconnects once power is safe again.

Long or planned outages

Your essentials run for hours on battery and solar — often longer, as solar refills the battery through the day.

Flicker & brief dropouts

Firefly rides through the quick sags and momentary cuts that dim your lights and reset clocks — so the everyday blips pass without a blink.

Firefly watches your power 60 times a second and reacts in under 20 ms — completely automatic, day and night.

<20 ms: Switchover
60×/sec: Grid checks
100%: Automatic
24/7: Always on

The equipment

Compact, wall-mounted, tucked away.

Our most common setup: 12 kW of continuous power and 16 kWh of storage — professionally installed in a covered space, like a garage, utility closet or covered patio. No fuel, no fumes, no generator roar.

A Firefly system installed in a warm San Miguel home: a wall-mounted 12 kW inverter above a floor-standing 16 kWh battery, wired through a disconnect to the main electrical panel.

Right-sized for your home

How long will it keep you running?

Every Firefly system is configured to your home's needs — and costs thousands less than a whole-home generator, with no fuel, no fumes, and no noise.

Essentials

Keep the critical things on — lights, fridge, internet, water.
- 6.5 kW inverter
- 5 kWh battery
- up to 6.5 kW solar
Critical loads only — includes a dedicated sub-panel.

How long will it last?
Essentials only ~8 hrs

Normal use ~4 hrs

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Comfort

Everyday life through an outage, including some air conditioning.
- 10 kW inverter
- 10 kWh battery
- up to 10 kW solar
How long will it last?
Essentials only ~15 hrs

Normal use ~9 hrs

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Recommended
Whole-home

Run the whole house — our most common install.
- 12 kW inverter
- 16 kWh battery
- up to 12 kW solar
How long will it last?
Essentials only ~24 hrs

Normal use ~14 hrs

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☀ With solar, the system recharges through the day — riding out most outages indefinitely. Backup times are approximate, on battery alone, based on ~25 kWh/day of normal use. Actual runtime depends on your home's loads.