Solar PV explained in 6 steps…
1 – Sun produces daylight; NB Solar PV Technology produces electricity from daylight which means even without direct sun, e.g., a cloudy day, you can still produce Solar PV electricity.
2 – Solar PV panels absorb the light which converts into DC electricity
3 – This current flows into an inverter which converts the electricity into AC for your home
4 – The current flows through a generation meter to monitor your production and then straight into your home’s consumer unit
5 – Your system will automatically use your free electricity during daylight hours before it pulls from the grid. You can become more energy efficient by changing your energy consumption habits and focusing on using utility items during the day i.e. dishwasher, washing machine.
6 – Any excess electricity generated but not used will be exported back to the grid. You will be paid an export tariff from your energy supplier for this.
What makes up a Solar PV module?
Solar PV cells are made of an extremely abundant semi-conductor material, silicon. This semi-conductor material is processed and made into thin wafers less than 1mm thick. Two layers of these silicon wafers are used, one is positively charged and one is negatively charged, when light falls onto the layers a small current flows between the layers. As the light intensity increases the amount of current also increases. Many small solar pv cells are then interconnected, framed and encapsulated to make the rugged Solar PV panel; a number of these panels are connected together to make a Solar PV array as shown in the diagram above.