5 crucial facts you should be aware of when choosing PV inverters

A solar power plant that can't handle the sun?

Tests show that inexpensive inverters significantly lose power output when ambient temperature rises.

The relationship between a solar power plant and the sun seems to be relatively simple: The more sun a solar power plant is exposed to, the more power it can produce. But where there is sun, there is heat, too. And this is, where this relationship starts to become a lot more tricky.

Solar power plants are complex, high-tech systems with a lot of electronic components. Unfortunately, electronic components are temperature-sensitive and start to suffer a loss of performance and lifetime at higher temperatures.
20% less performance at 35°C
In our testing center, we tested an inverter of our competitor for performance stability when exposed to ambient temperatures that are common for solar power plants. The results were clear. While the output power of our competitor’s inverter at 20°C was 30 kW (or 100%), it significantly lost output power as soon as the ambient temperature rose above 21°C. At a temperature of 35°C, which is quite common for solar power plants, the output power degraded to 24 kW. This equals 20% less performance and it gets worse with every additional centigrade.
Power Loss
100% power output even at 50°C with SMA
In comparison, SMA inverters with their perfectly matched components deliver 100% output power at ambient temperatures up to 50°C.