Frequently Asked Questions
What is a solar panel?
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A solar panel, also known as a photovoltaic (PV) panel, is a device that converts sunlight into electricity. It consists of multiple solar cells made from semiconductor materials, usually silicon. When sunlight hits these cells, it creates an electric current through the photovoltaic effect. This generated electricity can be used to power homes, businesses, and other electrical systems, reducing reliance on traditional energy sources and contributing to environmental sustainability.
How do Solar Systems work?
- A solar system consists of solar panels mounted on the roof, connected with electrical wiring and an inverter. From sunrise to sunset, the solar panels generate Direct Current (DC) electricity, which is sent to the inverter. The inverter then converts the DC electricity into Alternating Current (AC) electricity for household use.
What is an inverter?
- An inverter is a device that converts Direct Current (DC) electricity generated by solar panels into Alternating Current (AC) electricity, which is the standard form of electricity used in homes and businesses. This conversion is essential because most household appliances and electrical systems operate on AC electricity. Inverters also play a crucial role in maximizing the efficiency of the solar power system and ensuring the smooth operation of connected devices.
What size system do I need to power my home?
Is my home suitable for a solar power system?
- Several factors need evaluation to determine if your home is suitable for a solar power system. These factors include orientation, available space, potential shading, and your current electricity usage.
How is electricity stored for use after sunset?
- Grid-connected systems feed excess electricity generated during the day back into the local electricity grid. You receive a credit, known as a Feed-in Tariff, for the power supplied to the grid by your system. At night, when your system is not generating electricity, you draw power from the grid, and your electricity meter measures your consumption. Feed-in tariff rates can vary over time.
Do I still need electricity from the grid?
- Yes, you may still need electricity from the grid even with a solar system. During peak daylight hours, your solar system generates electricity. Excess electricity not immediately used is typically sold back to the grid. At night or during bad weather when your solar system isn’t generating electricity, or if your electricity demand exceeds solar production during the day, you will draw electricity from the grid.
Why is my solar power system not working at night?
- Solar panel systems operate during the day to generate power for your home. At night, when there is insufficient sunlight, the solar power system does not produce electricity and will be inactive until sunlight resumes in the morning. Batteries play a crucial role in storing excess solar energy for use later. They allow you to store electricity generated during the day and use it at night or during periods when solar production is low. This reduces reliance on the grid and enhances energy independence, especially when combined with a grid-connected solar system.
What if my roof isn't oriented to the North?
- While north-facing roofs offer optimal production, solar panel systems can be installed on roofs facing anywhere from east to west. A well-designed solar panel system will align your solar production with your property’s electricity consumption.
What if my roof is flat or has a low pitch?
- Solar panel systems can be installed on flat roofs using tilting frames, which may incur additional costs. A slight pitch is recommended to facilitate water runoff and self-cleaning.
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