If you plan to install photovoltaic solar energy in your home, you should know some factors that bring about the installation of a solar system, such as How much energy is wasted in a solar photovoltaic installation ?.
The production of electricity using solar panels has become very popular in recent years, this shift towards solar energy is due to the decrease in the costs of solar panels and a greater environmental awareness.
How much energy is wasted in a solar photovoltaic installation?
The sun is an inexhaustible and ecological source of energy. And most importantly, it shines for free and anyone can use it. To create a photovoltaic installation, simply mount photovoltaic modules on the roof, connect them with electrical cables, connect them to the inverter, and that’s it. This is all that is needed for each homeowner to become a producer of their own free electricity.
Total solar radiation on a flat surface in Poland amounts to approximately 1,000 kWh / m² per year. Inclined to the horizontal at an optimal angle: approximately 1200 kWh / m² per year.
The solar cells that make up the photovoltaic modules convert more than 15% of this into electricity. 2/3 of the energy is obtained in summer and 1/3 in winter.
Photovoltaic installation – electricity production
A photovoltaic plant produces electricity during the day but How much energy is wasted in a solar photovoltaic installation ?. It has a very low starting threshold: it produces electricity from dawn. All you need is daylight. A photovoltaic installation with a power of 1 kWp can provide approximately 900-980 kWh of electricity per year.
A photovoltaic installation with a power of 5 kWp generates annually between 4,000 and 5,000 kWh of electricity (depending on the location, orientation and angle of inclination with respect to the horizontal plane). This corresponds to approximately 100% of the average electricity demand for a four-person household and a reduction in CO 2 emissions to the environment by approximately 2,200 kg per year; Every kilowatt-hour of electricity produced by a photovoltaic installation saves the same amount of energy in a conventional power plant .
How much energy is wasted in a solar photovoltaic installation ?: Photovoltaic installation – electrical performance
We present a simulation of three photovoltaic installations with nominal power: 2, 4 and 10 kWp.
South to horizontal slope : 35 degrees
Photovoltaic modules: Vitovolt 200 type P250JB 250 W (polycrystalline silicon cells)
Photovoltaic installation: 2 kWp
Photovoltaic generator: 8 x Vitovolt 200
Total area: 13 m²
Annual electricity yields per 1 kWp of installed power: 942 kWh / kWp
Reduction of CO 2 emissions into the atmosphere: 1669 kg / year
Electricity (AC) supplied by photovoltaic installation: 1,893 kWh / year