Is my home suitable for solar energy-5 deciding factors

Deciding on utilizing the solar power by installing a solar panel in your house would lead you to a question-Is my home suitable for solar energy?  Here are the 5 deciding factors which may be/may not be on you side, continue reading to find out.

1. Exposure to the sun rays

Check whether the house is not shaded by the tall buildings nearby.

Whether there is some space in the terrace that receives direct sun light and whether the space is matching with the area of the solar panels required for your appliances.

The location of the house is an important factor in

2. Tilt angle and facing of the roof

The tilt of the solar panels for optimum harnessing of the solar radiation throughout the year should be Latitude ± 100.

Even though there are solar trackers which change the face of the solar panel to the direction of sunlight, studies show that spending money on a solar tracker is not worth the cost

Solar panels in the northern hemisphere should face the true south, whereas the panels in the southern hemisphere should face the true north.


tilt angle formulae




Βopt – optimum tilt (deg.)

– Monthly average solar irradiance in KWh/sq.m

φ – Latitude (deg.)

d – declination (deg.)


3.  Area of the roof

The area of the roof determines the number of solar panels that can be installed, hence the amount of solar energy captured. The more is the roof area better is the amount of energy captured. The minimum required area of a roof for installation of solar panel is 24 meter square.

4.  Solar irradiance

Measure the solar irradiance using a pyranometer or pyrheliometer and if it is any value around 800 W/sq.m and above , it is promising for solar energy harness.

5. Shading of the roof 

Extent of shading of the roof can be monitored for few days in every season to ascertain the usefulness of the roof for putting up the panels. A shaded roof can bring down the amount of energy produced by huge extent. A solar panel is made of a number of series and parallel circuitry. If a parallel circuit is shaded, then reduction in energy production can go down by 40%.

 Are the factors not in favour of you? check out the passive way to put solar energy to good use.

Passive solar buildings are those which have specialized building design (windows, walls, and floors) which can collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, it doesn’t involve the use of mechanical and electrical devices.

This way of solar energy harvesting requires the home to be built/modified to allow natural flow of air and heat, to maintain the house temperature warm during winters