Disclaimer

Last updated: May 28, 2026

⚠️ IMPORTANT: The information, calculations, and estimates provided by SolarCalc.fyi are for general informational and educational purposes only. They do not constitute professional engineering, electrical, financial, investment, or legal advice.

1. Estimates Only

All results from the SolarCalc.fyi calculator — including but not limited to solar array size, battery bank capacity, inverter sizing, charge controller specifications, and cost estimates — are estimates only. These estimates are based on:

  • User-provided appliance information (wattage, usage hours, quantity)
  • Average solar irradiation data from the National Renewable Energy Laboratory (NREL)
  • Industry standard formulas and best practices
  • Approximate equipment costs based on current market averages

Actual results will vary. We strongly recommend obtaining a professional site assessment before making any purchase or installation decisions.

2. Not Financial Advice

Any cost estimates, return on investment projections, payback periods, or savings calculations provided by the Site are not financial advice. They are rough estimates for educational comparison purposes only.

Factors that can affect actual financial outcomes include but are not limited to:

  • Actual equipment pricing from local suppliers and installers
  • Labor costs, which vary significantly by region
  • Changes in federal, state, and local incentives and tax credits
  • Utility rate changes and net metering policy modifications
  • Financing terms, interest rates, and loan availability
  • System performance degradation over time
  • Maintenance and replacement costs

Consult a qualified financial advisor or tax professional for advice specific to your situation.

3. No Guarantee of Accuracy

While we strive for accuracy, SolarCalc.fyi makes no guarantees, warranties, or representations — express or implied — that:

  • The calculations are error-free, complete, or up-to-date
  • The NREL data reflects your specific microclimate or exact location
  • Equipment specifications match actual products available on the market
  • Cost estimates reflect current or future market conditions
  • The system design complies with local building codes or electrical standards

4. Actual Solar Production Will Vary

Solar energy production depends on many site-specific factors that our calculator cannot fully account for:

  • 🌤️ Weather patterns: Actual insolation varies day-to-day and year-to-year
  • 🌳 Shading: Trees, buildings, and other obstructions reduce production
  • 🧭 Orientation & tilt: Panel angle significantly affects output
  • 🌡️ Temperature: Panels lose efficiency as temperature rises above 25°C (77°F)
  • 🧹 Soiling: Dust, snow, and debris reduce panel output
  • ⚙️ System losses: Wiring, inverter, and battery charge/discharge losses add up
  • 📉 Degradation: Panels lose 0.5-0.8% output per year

5. Always Consult a Professional

SolarCalc.fyi is a planning tool, not a substitute for professional engineering. Before purchasing equipment or beginning installation:

  1. Consult a licensed solar installer for a professional site assessment
  2. Verify all calculations with a professional engineer where required
  3. Check local building codes, electrical codes, and permit requirements
  4. Obtain multiple quotes from qualified contractors
  5. Review equipment warranties and manufacturer specifications

6. External Links Disclaimer

The Site may link to third-party websites, products, or services. These links are provided for convenience only. We do not endorse, guarantee, or assume responsibility for any third-party content, products, or services.

7. No Liability

To the maximum extent permitted by law, SolarCalc.fyi and its operators disclaim all liability for any loss, injury, claim, or damage arising from your use of the Site or reliance on any information provided. This includes, but is not limited to:

  • Property damage or loss
  • Personal injury or death
  • Financial loss or missed savings
  • Equipment damage or incompatibility
  • System underperformance or failure

8. Changes to This Disclaimer

We may update this Disclaimer from time to time. Changes will be posted on this page with an updated date.

For questions about this disclaimer, contact us at admin@solarcalc.fyi.