Free solar calculator

Estimate yearly yield, savings and payback in 30 seconds. No signup. Your numbers stay in your browser.

System size
—
kWp
Yearly yield
—
kWh/year
Yearly savings
—
EUR/year
Payback
—
years

Estimate only. Real yield depends on shading, panel quality, inverter losses, and local weather. For accurate design, use Diaz Editor with 3D shading analysis.

Want exact numbers?

Diaz Editor does 3D shading, BOM, PDF permit packs, and multi-discipline design (solar + battery + heat pump + electrical). €197 lifetime, no subscription.

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What you get for €197

One-time. Lifetime. 3 seats. No subscription.

  • Diaz Editor Pro — lifetime license for your full workday
  • 3 seats — you + your foreman + your work-prep ✓
  • All trades in one tool — building, carpentry, electrical, plumbing, mechanical, solar 4 tools saved
  • DXF export — works with any architect, contractor, or installer Included
  • 1-click PDF export — quote, work-drawing, and BOM in one pack Included
  • DXF + CNC export for the workshop — cut lists, sheet layouts, mill paths Included
  • All future updates — v0.4, v0.5, v0.6... Included
  • Feedback form that reaches the developer directly Exclusive

Built for self-employed tradespeople + small teams (1-10 people). Not for architects or utility-scale engineering — AutoCAD and Aurora are better at those.

Introductory price — goes up at v0.5:

€197 today

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