Modern renewable energy plants feature a wide range of electronic assemblies, such as control units for the alignment of the rotor blades and yaw control devices in wind turbines, or inverters in photovoltaic plants. When the temperature inside these devices increase, their performance drops, reducing the efficiency of the entire plant. For reliable and efficient power generation, the electronic assemblies need to be constantly cooled. This is done through high-performance heat sinks, or cooling housings, which is the preferred option for inverters. As renewable power plants are often exposed to extreme weather conditions and are generally hard to access, their cooling equipment must meet particularly stringent requirements: They must be corrosion-proof and durable, and maintenance must be reduced to a minimum.