16.08 kWh
6500+
GTF51314-16K-01
Quote pricing available
Free system designWall-mount energy storage that scales with your home.
Off-grid systems
Off-grid solar systems
PowerWallStore designs off-grid solar systems that pair LiFePO4 battery storage with a split-phase hybrid inverter to run cabins, workshops, and full-time homes without the grid. We size the battery bank, inverter, and solar array together — typically 28 kWh or more of storage, a 10–12 kW inverter, and a generator input for long cloudy stretches — so the system matches how you actually live. Free system design and a quote within one business day, shipped across the US and UK.
Home batteriesBattery
LiFePO4 storage.
Most popular
Battery28.67 kWh
8000+
BAT-ST51560A-A1
Quote pricing available
Free system designLong-cycle LFP storage, built for daily depth of discharge.
Hybrid inverters
Inverter
Split-phase inverters.
Flagship
Inverter8 – 12 kW
99.9%
SEI Pro Series
Quote pricing available
Free system designSplit-phase hybrid inverter, up to 12 kW.
8 / 10 kW
99.9%
SPI Series
Quote pricing available
Free system designCompact storage inverter, 8 or 10 kW.
Complete your system
Sized and shipped as a matched system.
Off-grid orders pair a LiFePO4 battery bank with a split-phase hybrid inverter, sized together in your free system design.
Build a system
Battery + inverter, sized together.
Free system design and a no-obligation quote within one business day. Ships across the US & UK.
Why PowerWallStore
Why these off-grid systems.
A balanced system
We size battery, inverter, and solar together — not just the biggest battery — so the system matches how a home or cabin is actually used.
Days of autonomy
LiFePO4 storage from 28 kWh and up, parallel-expandable to 20 units, supports the 2–3 days of autonomy most full-time off-grid homes need for cloudy stretches.
Generator-ready
A generator input on the hybrid inverter lets you recharge through long storms, snow, or maintenance days without rewiring the home.
Whole-home power
10–12 kW split-phase hybrid inverters start motors, pumps, and HVAC and deliver standard 120/240 V output for everyday appliances.
FAQ
Off-grid system FAQs.
How many kWh of battery do I need for an off-grid house?
A small cabin may work with 10–20 kWh, while a full-time off-grid home often needs 28–60 kWh depending on loads, weather, and desired days of autonomy. Start with daily kWh use, then multiply by 2–3 days for year-round resilience.
What size inverter do I need for off-grid solar?
Size the inverter to peak simultaneous load, not daily energy use. Many homes fit a 10–12 kW split-phase hybrid inverter, but large HVAC, pumps, or workshop loads may require parallel inverters or load management.
Do off-grid systems still need a generator?
Usually yes. A generator is cheap insurance for long cloudy stretches, snow cover, equipment maintenance, or unusually high loads. It should connect through the hybrid inverter for controlled battery charging.
Can I go fully off-grid with these systems?
Yes. Pairing a hybrid inverter with enough LiFePO4 storage and solar lets you run a home entirely off-grid. Most off-grid homes combine a 10–12 kW inverter with 28 kWh or more of stacked battery capacity.
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