Solar Power and method to calculate panels in accordance to your load

Annotations:

Latitude: Geographical latitude of the location where the solar panel is installed.

Date: Specific day of the year for which the calculation is performed (dd.mm). For example, "21.12" represents the winter solstice in the northern hemisphere, which is the shortest day of the year with the least daylight duration.

Panel Tilt Angle: Angle of the solar panel relative to the horizontal plane. Optimal tilt depends on latitude and season. A tilt of 0° is treated as slightly greater than 0° to avoid calculation errors.

Azimuth Angle: Orientation of the solar panel relative to true south (or north in the southern hemisphere). A value of 0° indicates a south-facing panel.

Load Power: Power required by the load (W).

Load Time: Number of hours the load operates per day.

Panel Efficiency: Efficiency of the solar panel in converting sunlight into electricity (0-1). Common materials and their typical efficiencies include:

• Monocrystalline Silicon: 0.18–0.22
• Polycrystalline Silicon: 0.15–0.18
• Amorphous Silicon: 0.06–0.10

Atmospheric Transmittance Coefficient (τ): Measure of how much sunlight passes through the atmosphere. Lower values indicate higher atmospheric absorption or scattering.

cosθ: Cosine of the angle of incidence between the sun's rays and the normal to the solar panel surface. It accounts for the panel's tilt and orientation.

Real P Solar: Rated power of the solar panel required to meet the load's energy demand.

Panel Area: Area of the solar panel required based on the real P solar.