Enter your system cost, incentive, monthly bill and annual escalation — see your payback period and 10/25-year lifetime savings. No email required to use it.
Net cost = gross x (1 − incentive%). Annual saving = 12 x monthly bill, escalated yearly. Figures are indicative; incentives and tariffs vary by country and year.
| Metric | Value |
|---|---|
| Net cost after incentive | — |
| Year-1 saving | — |
| 10-year net saving | — |
| 25-year net saving | — |
| Cost if you never go solar (25y) | — |
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In 2026 a typical grid-tied solar system pays back in about 6–10 years, dropping to 4–7 years where a battery raises self-consumption and incentives such as a 30% tax credit apply. Backup-only or very cheap-grid cases run longer.
It adds upfront cost, but a battery lets you use more of your own solar instead of exporting it cheaply — so it often shortens payback if you cycle it daily. If used only for rare outages, it lengthens pure financial payback while adding resilience value.
A 30% credit cuts your net cost by nearly a third, which shortens payback by years — roughly dividing the payback period by 0.7. Always enter the net-of-incentive figure for an honest result.
Payback takes longer on a cheap grid, but the case shifts to price protection (tariffs usually rise) and resilience. Many buyers still proceed because the 25-year savings compound as rates climb.
Tell us your country, tariff type and daily kWh — we'll size a system and outline the case.
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