Discussion on solar Inverter Efficiency

How efficient is a solar inverter?

The efficiency of a solar inverter significantly impacts the total energy produced by a solar installation. Since all the electricity generated by the installation passes through the inverter, its efficiency is crucial. For instance, with an 80% efficient inverter, 20% of the electricity is lost, while a 98% efficient inverter only loses 2%.

Why is inverter efficiency important?

By approximation, efficiency of the inverter is a linear factor for the system's energy yield. Consequently, for a good system performance, a high efficiency over the entire power range is essential. Notably, the inverter efficiency also depends on the DC voltage.

How does inverter efficiency affect the value of a solar system?

Consider a solar installation producing 7,000 kilowatt-hours (kWh) annually. Over 25 years, this amounts to 175,000 kWh. Assuming each kWh is valued at $0.13 , increasing annually by 2.6%, here’s how inverter efficiency affects the total value: A hypothetical 100% efficient inverter would yield 175,000 kWh, totaling $31,489.

What is a peak efficiency inverter?

The peak efficiency of an inverter tells you how good it is at turning the DC energy from your solar panels into AC energy for your house when it’s working at its best. Simply put, it measures the inverter’s top performance level. This stands for the efficiency rating set by the California Energy Commission.