OpenSolar is a highly popular, completely free solar design and proposal software for professionals. It monetizes through partnerships with equipment manufacturers rather than charging subscription fees.
Created by the National Renewable Energy Laboratory (NREL), SAM is a completely free, open-source performance and financial modeler.
Helioscope software free often includes a range of features and capabilities, such as:
❌ shade analysis for a real installation. ❌ You design systems over 5 kW. ❌ You’re a professional – you’ll outgrow it in 1 hour.
👉 Recommendation:
: Not advertised prominently. You may need to contact Folsom Labs’ academic sales team directly. Turnaround can take 1–2 weeks.
OpenSolar is a highly popular, completely free solar design and proposal software for professionals. It monetizes through partnerships with equipment manufacturers rather than charging subscription fees.
Created by the National Renewable Energy Laboratory (NREL), SAM is a completely free, open-source performance and financial modeler.
Helioscope software free often includes a range of features and capabilities, such as:
❌ shade analysis for a real installation. ❌ You design systems over 5 kW. ❌ You’re a professional – you’ll outgrow it in 1 hour.
👉 Recommendation:
: Not advertised prominently. You may need to contact Folsom Labs’ academic sales team directly. Turnaround can take 1–2 weeks.
