Solar Power is energy generated from the sun. In just one hour the sun generates enough energy to power the world for an entire year. The sun’s rays are captured by solar cells and converted into electricity. This is known as the photo-electric effect. Solar power is an abundant renewable energy source with the potential to supply the world’s energy needs.
Solar PV cells convert sunlight directly into low voltage electricity. The supply is direct current (like a battery). An inverter is used to convert this to a higher alternating voltage suitable for supply into the electricity grid. The average size of a household grid-connected solar PV system is about 1.5 kilowatts which has a PV panel area of about 10 square meters.
The solar panels need to be installed facing north and inclined at an angle to maximize exposure to the sun. If the aim is to maximize output during the grid’s afternoon peak demand period the panels can be installed facing more towards the north-west. If your roof is flat or too steep a tilt frame can be utilized for a small additional price. To increase the total amount of electricity generated the solar panels can be mounted on a tracking unit which ensures that the panels are always facing directly towards the sun throughout the day.
Grid-connected PV systems do not need batteries to maintain supply, as electricity is drawn from the grid when the solar cells are not providing power at night or have reduced output due to cloudy weather.