Solar Inverter Sizing Guide: How to Size Your Inverter
Learn how to properly size your solar inverter with our complete guide. Discover the optimal DC-to-AC ratio and avoid costly sizing mistakes.
Your inverter size should match your solar array's capacity, not your electricity bill. This means your inverter doesn't need to power your entire home—it just converts whatever your panels generate. Let's say you have a 6kW solar array (twenty 300-watt panels).
When choosing an inverter for a house, you should consider its size, type, and potential features. Two major types of inverters exist in the market: modified sine wave and pure sine wave. Pure sine wave inverters are expensive but they can deliver a reliable and consistent power supply to AC appliances, thereby maintaining their safety.
When choosing the size of the inverter, you need to consider several things, including the continuous power or running wattage of all appliances and surge capacity or the highest starting wattage to determine how much peak and continuous power an inverter should supply.
Think of inverter sizing like choosing the right-sized engine for your car. Too small, and you'll struggle on hills. Too large, and you're paying for power you'll never use. The sweet spot maximizes both performance and value. It's a common misconception that inverter size should match your home's energy usage.
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