How many solar panels do you need for your home?
In this blog, we will try to reveal the basic principles of implementing a home solar power plant, and consider all the pros and cons.
The technology for recycling solar energy and converting it into electricity dates back to the mid-20th century. The first prototype of the solar panel was created by the Italian photochemist Giacomo Luigi Chamichan.
Some time later, the first space satellites were equipped with solar panels. The simplicity and reliability, as well as the relative efficiency of generating this type of electricity, allowed solar panels to quickly spread and form one of the most environmentally friendly and efficient markets for electricity generation in the world.
So what does a solar panel consist of?
The most widespread, namely, for simplicity and relative cheapness, received solar panels based on silicon elements. Silicon is the second most massive element on our planet (the first Oxygen). This enabled the industry to mass-produce silicon cells and further assemble them into solar panels. As a rule, a solar panel consists of 60 and 72 silicon plates, which are connected by current-removing tracks and glued to the glass. This set of series-connected silicon wafers allows you to produce solar panels with a power of 250 to 370 Watts.
Key indicators of the solar panel is the coefficient of performance (COP).
Manufacturers of modern solar panels, which are mass-produced and used, were able to achieve an efficiency of 16-20%. This means that 16-20% of the received solar energy, on the surface of the panel, will be converted into direct electric current. Advanced theoretical research has made it possible to increase the efficiency of solar panel solar cells up to 66%.
How is the capacity of a solar power plant formed?
Consider the example of a solar power plant in a private household.
The first thing to start with is to determine the location of the solar panels. Since the sun moves and constantly changes the angle relative to the earth’s surface, you need to choose the optimal azimuth and angle of inclination of the panels. The best azimuth of rotation of solar panels in relation to the sun is 180°. When placing solar panels on the roof of the house, it is necessary to choose the South side. At the same time, the angle relative to the horizon will be exactly the same as the roof itself has. However, today, manufacturers of solar panel mounts offer a wide range of mounts that will improve the value of angular reflection and increase the efficiency of solar panels.
After we have decided on the location of the solar panels, we need to measure the size and calculate how many solar panels can be placed. Most solar panels have standard dimensions: 60 silicon cells – 1650×992 mm, 72 silicon cells-1950×992 mm. Simply put, we have two sizes: 1 m by 1.7 m and 1 m by 2 m.