TechoSolara is a smart solar viability assessment tool for Android. It uses your device's tools, GPS and gyroscope to fill in the information it needs, and solar arc mathematics to instantly determine the solar generation potential of a property - before you engage a solar engineer.
TechoSolara is a single low-cost purchase with no subscription, no ads, and no ongoing charges.
Yes. All calculations are performed on-device. TechoSolara works in areas with no mobile or data coverage.
No. TechoSolara employs Privacy by Design. Location data is used only for the calculation and is never stored, shared, or sent to any server. It is fully GDPR compliant.
An Android phone. Stand at the property, open the app, and it does the rest.
TechoSolara rates solar potential as Poor, OK, Good, or Excellent — giving you a clear indication of whether solar panels are worth pursuing before spending money on a site survey.
No. TechoSolara is a viability filter, not an engineering tool. It tells you whether solar is worth pursuing — a solar engineer will provide precise output figures.
Yes — and this is a key strength of TechoSolara. Many tools only assess a single roof. TechoSolara supports up to three roof aspects simultaneously, meaning east and west facing roofs are properly evaluated. And full support for both hemispheres to assess whether a north or south roof are better in your location.
TechoSolara not only compares your multiple roofs, but it can assess them as a single installation. This allows you to see whether one roof, or multiple roofs will give you the results you need. With or without a battery.
TechoSolara allows you to instantly validate solar viability on-site, making your EPC recommendations more accurate and meaningful without waiting for a specialist engineer.
TechoSolara uses established solar arc mathematics based on GPS location, roof pitch, and orientation. It is designed as a pre-engineer filter tool — it gives reliable directional assessments, not engineering-grade output predictions.
Check out the Quality Assurance pages to see the latest results.
By identifying properties where solar is genuinely viable, TechoSolara helps planners target resources effectively and supports data-driven sustainability decisions at a local level.
Phase 1 supports individual property assessment. Licensing for bulk or portfolio assessment is planned for Phase 2.
Check out the Roadmap to see our current goals.
Patent pending: GB2604728.2 | © 2026 Sam J Watkins and TSamko Ltd.
TechoSolara © 2026 TSamko Ltd. All rights reserved.