Tilted Roofs or Industrial Metal Roofs
Now what to do in case we are planning to install a solar PV rooftop project over a roof that is already having a tilt or slope? Let’s understand this with a help of an example.:
Example 1 – Optimum tilt angle for solar PV rooftop project to be installed at Punjab, India. The proposed roof already have a slope of 12 degrees facing towards South.
Latitude angle of Punjab is around 31 Degrees, hence the optimum tilt angle should be around 31 Degrees as per the thumb rule. Since, our roof here is already at a 12 degree tilt, there can be two scenarios:
Scenario 1 : Adding an additional tilted structure over the tilted roof to make the final angle near to 31 Degree
Scenario 2 : Planning and Installing module parallel to the existing roof i.e. at 12 Degree angle
In the scenario 1, no doubt we will have the optimum energy generation from the project. But due to the extra tilt structure installation
- An extra weight would be added to the existing shed or roof. This is not recommendable for the stability of the roof.
- Higher tilt angle will make solar PV module more prone to wind impacts. Structure failure chances will be increased
- Extra structure means extra CAPEX cost of the structure.
Hence, to be on a safer side it is always recommended to install solar PV modules parallel to the existing roof tilt. So, scenario 2 will be preferred here.
0 Comments