☀️ Free Tool — Homeowners & Solar Installers

Solar Savings & Break-Even Calculator

Enter your household usage, tariff structure, system size, and rebates — see exactly when solar pays back and what it earns you over 25 years.

25-yr model with degradation & inflation
State defaults tariffs, FiT & rebates auto-fill
Quote output copy-paste text for installers

What This Calculator Models

🏠
Household Usage Profile
Daily kWh + when you use power — changes self-consumption dramatically
💡
Flat or Time-of-Use Tariffs
Full ToU modelling — peak, shoulder and off-peak blend based on your load profile
🔋
Battery Storage
Toggle a battery on to see the uplift in self-consumption and payback impact
💰
All 2026 Rebates
STC auto-calc by zone, $372/kWh battery scheme, and state rebates
📈
25-Year Forecast
Panel & battery degradation + electricity price inflation compounded annually
✍️
Quote Output Block
Generates copy-paste text installers drop directly into their customer quote

How to Use This to Win More Jobs

  • Run it during the site survey — enter the customer's actual bill details on the spot. A live, personalised forecast built in front of the customer is far more persuasive than a generic savings claim in a later quote.
  • Always show the battery comparison — toggle battery on and off and show both results side-by-side. Many customers say yes to battery when they can see the payback difference directly.
  • Copy the Quote Output Block — paste it into Section 2 (System Summary) of your solar quote. It matches the format recommended in our Solar Quote Writing Guide.
  • Check your margin too — once you've confirmed the system works for the customer, run the Solar Quote Profitability Calculator to make sure it also works for you.

Turn Every Quote Into a Trackable Job

ServiceM8 connects solar quotes to site surveys, compliance checklists, CER documentation, and automatic invoicing — so nothing falls through the cracks after a customer says yes.

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💹 Solar Quote Profitability Calculator 🧮 Admin Cost Calculator 📋 Solar Quote Writing Guide

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