Calculator, solar + battery ROI
Solar + Battery ROI Calculator
Estimate an indicative payback range for a combined solar and battery system, based on your net system cost and current annual electricity spend.
Assumptions
Combined solar + battery systems typically offset 55–75% of an annual bill, depending on usage pattern, tariff structure and system sizing. Payback is a simple (non-discounted) calculation and excludes financing costs, maintenance and any price escalation.
Indicative return on investment
- Indicative annual savings
- $1,540 – $2,100/yr
- Simple payback range
- 8.6 – 11.7 yrs
Indicative only, subject to bill review and site assessment.
02Methodology
How we estimate payback.
We apply a typical offset range for combined solar + battery systems to your annual bill to get indicative annual savings, then divide your net system cost by that range. A full proposal models your interval data, tariff and incentive eligibility precisely.