Understanding some basic solar power terms can make it much easier to follow what your installer is talking about and give you confidence in making decisions about your system. Here are eight commonly used terms that will help you navigate the world of solar energy:

1. DC (Direct Current): DC stands for direct current, which is the type of electricity generated by solar panels. When sunlight hits a panel, it causes electrons to move in a single direction, creating DC electricity. However, DC is not compatible with most home appliances. To make it usable, DC power must be converted to AC by an inverter.
2. AC (Alternating Current): AC, or alternating current, is the standard type of electricity used in homes and businesses. Unlike DC, AC changes direction frequently, making it more efficient for transmitting electricity over long distances. This is why it’s the preferred current for electrical grids and what powers most household appliances, lighting, and machinery. In a solar system, DC from the panels is transformed into AC so it can be used to power all your home’s electrical needs.
3. Inverter: The inverter is a critical component in any solar setup, as it converts DC electricity from the solar panels into AC electricity that can power your home. Beyond this, it also plays an essential role in managing energy flow. If your solar panels produce more energy than you currently need, the inverter sends that extra electricity back to the main grid
4. kWh (Kilowatt-Hour): A kilowatt-hour, abbreviated as kWh, is a unit of energy that measures how much electricity is used over time. You’ll often see this measurement on your electricity bill, as it’s how power companies track and charge for energy consumption.
5. Feed-In Tariff: A feed-in tariff is a program that compensates you for any excess electricity your solar panels generate. When your system produces more power than you’re using, this surplus can be stored in a battery (if you have one) or sent back to the electrical grid. In return, your utility company pays you or offers a credit for this contribution, which can help reduce your electricity costs.
6. On-Grid Solar System: An on-grid solar system is connected to the local utility grid, making it one of the most common types of setups in both residential and commercial spaces. Being grid-tied means that any excess electricity generated by your solar panels can be exported to the main grid, while still allowing you to draw power from the grid when needed, such as at night or on cloudy days. This arrangement maximises energy efficiency and ensures a consistent power supply.
7. Off-Grid Solar System: Unlike on-grid systems, an off-grid solar system operates independently from the utility grid, requiring its own battery storage. In an off-grid setup, extra energy generated during sunny days is stored in a battery, so it’s available for use during periods without sunlight. Off-grid systems are often preferred in remote locations where access to the main grid is limited or unavailable, giving these households complete energy independence.
8. Photovoltaic Effect: The photovoltaic effect is the process by which solar panels generate electricity. Solar panels are composed of photovoltaic cells, typically made of semiconductor materials like silicon. When sunlight hits these cells, photons are absorbed, releasing electrons and creating a flow of DC electricity. Metal contacts on the panel collect this energy, and an inverter then converts it to AC, making it compatible with household appliances.

Having a grasp on these terms will make it easier to communicate with your installer, understand your system’s capabilities, and make more informed decisions about your energy use and savings.

Your Solar & Electrical Experts

Established in 2020, Tropical Solar and Electrical Services is a locally owned and operated company servicing homes and businesses throughout Mackay and surrounding areas including Moranbah, Sarina, Proserpine and Rockhampton. Whether it’s power on the roof or within the property, we’ll ensure it’s running as it should. Get in touch with our electrical experts today for a free quote. We’re available 24/7 for your convenience.