Solar + Battery ROI Calculator

Estimate your savings with federal and state rebates using our advanced calculator

System Details

Solar System Size (kW)

Typical residential systems range from 3kW to 10kW

Battery Size (kWh)

Add a battery for energy independence

Total System Cost ($)

Average system cost: $4,000-$12,000 for solar only

Location & Usage

State

Daily Electricity Usage (kWh)

Average Australian household: 15-20 kWh/day

Electricity Rate ($/kWh)

National average: $0.25-$0.35/kWh

Feed-in Tariff ($/kWh)

Typical range: $0.05-$0.15/kWh

Financial Settings

Annual Price Increase (%)

Historical average: 3-5% per year

Join Virtual Power Plant (VPP) Earn additional income by sharing excess energy

Your Savings Analysis

System Cost After Rebates

$10,450

Includes all eligible rebates

Save $4,550

Payback Period

6.2 years

Time to break even

Faster than average

10-Year Savings

$18,720

Estimated cumulative savings

Excellent ROI

Annual Savings

$1,872

First year savings estimate

23% reduction

Rebate Breakdown

Savings Projection

ROI Analysis

Disclaimer: This calculator provides estimates only and does not constitute financial, legal, or energy advice.

Results are based on user-inputted data and assumptions about future energy prices, system performance, and government policies.
Rebate values reflect current programs and may change without notice.
STC calculations use zone ratings from the Clean Energy Regulator and assume an STC value of $39 (ex-GST).
Battery rebates are capped at 50kWh under the Cheaper Home Batteries Program (CHBP).
For accurate quotes, consult a CEC-accredited installer.

By using this tool, you agree to our Privacy Policy and acknowledge that Sunburn Solar is not liable for decisions made based on these estimates.

Solar and Battery ROI Calculator