SolarOptimiser — Maximise Every Dollar Your Solar Makes

⚡ Tariff Checker Am I getting the best feed-in rate? Free

🔋 Battery Calculator Is a solar battery worth it for me? Free

⚡ Feed-In Tariff Checker

Takes 30 seconds. See how much more you could earn by switching retailers.

Your state

Solar system size

Current retailer

Your feed-in rate (¢/kWh) Find this on your quarterly bill — shown as a rate in ¢/kWh next to your solar export credit.

kWh exported last bill Total kWh exported — under "Solar feed-in" or "Solar credits" on your bill.

Billing period (days) Number of days the bill covers — shown at the top of your bill.

🔋 Battery ROI Calculator

Takes 60 seconds. Get your exact payback period, 10-year return, and available rebates.

Your solar system

State

System size

Your battery

Battery model

Installed cost ($, inc. GST) Update with your actual quote

Battery capacity (kWh)

Your electricity

Usage rate (¢/kWh) From your bill — usually 25–40¢

Feed-in tariff (¢/kWh) What you get paid for solar exports

Daily household usage (kWh) Avg Australian home: 15–20 kWh/day

Home during the day?

You could be earning

more per year by switching to the best available rate

Currently earning

per year

Best available rate

per year at 0¢/kWh

All retailers in your state — ranked by rate

Data updated July 2025. Rates change July 1 each year. Subscribe below for alerts.

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Also — is a solar battery worth it for you? A battery could eliminate most of your grid electricity costs. See your payback period in 60 seconds.

📬 Get notified when rates change

We update rates every July. Enter your email and we'll alert you when there's a better deal — no spam, one email per rate cycle.

✅ You're on the list! We'll email you when rates change.

No spam. Unsubscribe anytime. We never sell your data.

Payback period

—

Payback period

—

years

Annual savings
—
per year

10-year net return

—

after battery cost

How we calculated this

Battery stores daily—

Grid electricity offset per day—

Value of grid offset (at 30¢/kWh)—

Lost feed-in income (exports redirected)—

Net daily benefit—

Installed cost—

Less: government rebates—

Net cost after rebates—

💰 Government rebates in your state

⚡ Bonus: Virtual Power Plant (VPP)

Earn extra income by letting your retailer use your battery during peak grid demand. AGL, Origin, Amber and Tesla all offer VPP programs. No impact on your power supply.

+$300–600/yr

Estimated additional VPP income based on your battery size. Not included in payback above — treat as upside.

Ready to get battery quotes?

Compare 3 quotes from pre-vetted local installers. 2 minutes, no obligation. Installers compete for your business — prices are typically 10–20% lower than going direct.

Get 3 Free Quotes → Compare Battery Prices →

We may receive a referral fee if you request quotes. This doesn't affect prices shown.

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Also — are you getting the best feed-in tariff? A better feed-in rate shortens your battery payback period. Check yours in 30 seconds — it's free.

📬 Get notified when rebates or rates change

Battery rebates and electricity rates change each financial year. We'll email you when something changes that affects your calculation.

✅ Done! We'll email you when rates or rebates change.

No spam. Unsubscribe anytime.

How we make money: SolarOptimiser is a free comparison tool. We may earn referral commissions from energy retailers and installers when you switch or request quotes via our links. This never affects the rates or rankings we show. All tariff data is sourced from retailer published rates, AER, QCA, IPART and ESC. Battery prices and rebate data current as of June 2026. Always confirm current rates and rebate eligibility before making decisions.

Maximise every dollaryour solar makes