Installer Tools
Free calculators and compliance resources for Australian solar installers. No account needed for basic access.
The Tools
STC Calculator
Calculate Small-scale Technology Certificate entitlements by system size, postcode zone, and installation date. Includes clearing house and market pricing.
Job Margin Calculator
Analyse job profitability with detailed cost breakdowns. Includes overhead estimation, margin health indicators, and industry benchmarks.
Compliance Checklists
PopularState-specific installation compliance checklists for grid-connect PV, battery, and standalone power systems. Download as PDF.
Regional Demand Heatmap
Visualise solar installation demand across Australia. State-level view is free; postcode-level detail requires an account.
Access Tiers
- FreeBasic access to all tools
- STC calculations
- Margin analysis
- State-level heatmap
- Basic compliance checklists
- Start using
- EmailFull access with email registration
- Everything in Free
- PDF checklist downloads
- Postcode-level heatmap
- Market insights reports
- Register free
- AccountFull platform access
- Everything in Email
- Save calculations
- Historical comparisons
- Priority support
- Coming soon
Apply to become a Why Solar partner
Family owned, and we do not install solar. Free to apply, then you pay per lead delivered with 7 days to raise a problem. We assess every application, and access is not automatic.