Size your solar + battery
system in 60 seconds
Real sun-hours and utility rates for your ZIP. See your system size, payback period, and the exact BigBattery kit that fits your home.
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3 How accurate do you want to be?
The more you tell us, the more precise your quote. Bill upload is unbeatable — we use your real monthly kWh.
4 How much backup do you need?
Battery capacity is sized around how long you want to ride out an outage.
Building your custom quote
Crunching panels, batteries, and savings for your home…
A 28.6 kWh BigBattery ESS, paired with 9.2 kW of solar.
Your recommended BigBattery kits
Best Value – Ideal for starting small, gaining energy independence now, and expanding storage capacity over time as your energy needs grow.
Recommended – The best match for your current energy usage and system sizing requirements.
Premium – Our top-tier ESS solution featuring the latest technology and highest-performance hardware for customers who want a no-compromise setup.
How a 28.6 kWh MeterHome works through your day
A 9.2 kW solar array in your area · ~12,500 kWh per year
Recommended System — Estimated Solar Production and Energy Consumption
Based on your sized array and household consumption. Y-axis uses real kW values; production curve uses NREL sun-hour data and a 77% system efficiency factor.
💰 Your BigBattery cost
BigBattery ships the ESS (battery + inverter). Solar panels and licensed-electrician installation are sourced separately through your installer and aren't included above.
Get your full quote PDF + talk to a BigBattery expert
We'll email your complete spec, financing breakdown, and panel/battery BOM. A US-based engineer will follow up if you want help, no high-pressure sales.
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Talk to a BigBattery engineer
Free 15-min sizing call · Mon–Fri 8am–5pm PT · No sales pressure