About HeliosROI
We build simple, transparent tools that help households evaluate solar PV payback, ROI, and savings—based on real irradiance, prices, and realistic usage patterns.
Our Mission
Solar is powerful, but confusing math can get in the way. HeliosROI makes ROI calculation clear and credible so you can make better decisions—no hype, just numbers.
- Realistic modeling of self-consumption vs export
- Support for batteries, tariffs, and seasonal usage
- Location-aware solar data (e.g., PVGIS/NASA)
How the Calculator Works
We combine your inputs (bill, location, system size) with local solar radiation and price assumptions. The model accounts for system losses, panel degradation, and optional battery behavior to estimate payback years, 20-year ROI, and annual savings.
Transparency first: default assumptions are shown in the UI and can be adjusted.
Trust & Editorial Principles
- Sources: Open, reputable datasets (PVGIS, NASA POWER, NSRDB, REE/ENTSO-E, etc.).
- Clarity: Show formulas, assumptions, and ranges where relevant.
- Privacy: Calculator inputs run in your browser by default. See our Privacy Policy.
Contact
Questions, feedback, or partnership ideas? We’d love to hear from you.
Email: contact@heliosroi.com
Legal
HeliosROI provides informational tools only. Outputs are estimates, not financial advice. Installation quotes and incentives vary—always confirm with local installers and authorities.