![]() HOW IT WORKSThe solar panels convert the suns energy into DC electricity. The inverter then converts the DC into normal 240V AC electricity, feeding energy into your homes electrical wiring. The houses appliances use their immediate electricity needs and any excess energy is fed back into the grid (effectively spinning your meter backwards) gaining you credits on your electricity bill. During the night or in cloudy weather, your meter runs forward again. The whole process is seamless and automatic. In the case of a blackout during the day, the solar system will shut down for safety reasons, automatically coming back on when the power comes back. UNDERSTANDING YOUR ELECTRICITY USEElectricity bills for the past year are the best way to determine your electricity usage. This can help you determine what percentage of your electricity use is covered by your solar system. Your bills indicate the number of kilo-watt-hours (kWh) you consume from the grid. Add together the usage from each bill to get your yearly electricity usage. For example an average home may use 5475 kWh/year (15kWh/day). A 1kW solar system will generate approximately 1500 kWh/year (4.1kWh/day), hence covering around a quarter of your usage. Your yearly electricity bill will therefore be Usage (5475 kWh) – Solar output (1500 kWh) = 3975 kWh.
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