Solar em Telhado Comercial
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The commercial rooftop solar potential calculator estimates energy generation capacity based on available roof area. It uses the rule of thumb of ~100 kWp per 1,000 m², factoring in roof orientation, shading, and panel efficiency. Designed for businesses planning photovoltaic system installations.
It works by multiplying the roof area (in square meters) by 0.1 kWp/m², assuming ideal conditions (e.g., 1,000 m² yield ~100 kWp). Results vary by slope, equipment quality, and geographic location. This calculation provides an initial estimate and should not replace a detailed technical assessment.
Use this tool for dimensioning systems in commercial, industrial, or corporate buildings. Common scenarios include factories with large flat areas or offices with sun-exposed roofs. Caution: consult a specialist for validation, especially if neighboring buildings cast shadows or roof structures exist.
Frequently asked questions
What is the accuracy of the results?
Results are initial estimates. Actual generation depends on shading, slope, and panel efficiency. For precise calculations, consult a technical expert.
Do I need to measure the roof area exactly?
Use approximate dimensions from blueprints or visual inspection. More accurate measurements require mapping tools or technical consultation.
How does roof orientation affect the calculation?
The calculator assumes optimal orientation (south in the northern hemisphere or north in the southern). Other orientations may reduce efficiency by up to 20%, depending on location.
Does it include installation costs?
No. The calculation focuses only on theoretical generation. Costs vary by equipment, labor, and local regulations.