Home Battery Calculator

Find your right size, model and payback in 30 seconds. No email required to use it. Leave it only if you want a tailored quote.

Estimates use a 0.9 round-trip efficiency and 1 arbitrage cycle/day. Figures are indicative; a tailored quote confirms exact sizing and pricing.

— kWh
recommended capacity
Daily saving$0
Annual saving$0
Est. system cost$0
Payback period

Want this configured for your site, with distributor pricing? Leave your email — we reply within 24h, no obligation.

Thanks — we'll send your tailored quote within 24h.

Calculator FAQ

What size home battery do I need?

For grid-tied self-consumption, size to about 60% of your daily use. Off-grid, size to 1.5x your net daily use after solar. The calculator above maps the result to a concrete NovaBESS model.

How long does a home battery take to pay back?

Typically 6–12 years depending on peak/off-peak spread and cycles/day. Higher rate gaps and daily arbitrage shorten payback.

Do I need solar to use a home battery?

No. A battery also earns from peak/off-peak arbitrage and provides backup. Solar multiplies savings but is not required.

Can I expand capacity later?

Yes. NovaBESS HomeStack modules parallel from 5 kWh up to 60 kWh, so you can start small and add later.

Not sure about your numbers?

Tell us your country, application and capacity — we'll respond with a configured solution and distributor pricing.

Request a Quote