Solar Savings Calculator

Use our solar savings calculator to estimate the potential savings from solar panels. Enter your details below for instant results.

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How do we calculate this? (Assumptions & Disclaimer)
  • We assume average usable daylight hours in the UK: 3.8 hours/day (annual average, source: National Grid/BEIS).
  • Panel efficiency: 19% (typical for modern monocrystalline panels).
  • System losses: 15% (shading, inverter, wiring, etc.).
  • We use the higher of Area or (Length x Width) for each roof input.
  • Annual generation = total system size (kWp) × 3.8 × 365 × 0.85.
  • Annual savings = annual generation × your electricity rate.
  • This tool is for illustrative purposes only. Actual results will vary based on roof orientation, pitch, shading, local weather, and system design.

For a detailed, no-obligation proposal with a site-specific yield assessment, contact Solo Property Services.

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