A negative value for temperature coefficient indicates what kind of relationship with voltage?

A negative value for the temperature coefficient indicates an inverse relationship between temperature and voltage. In solar photovoltaic (PV) systems, the temperature coefficient typically refers to how the voltage output of a solar panel changes with temperature variations. When the temperature rises, the voltage output decreases due to the negative temperature coefficient.

This relationship is significant because it implies that as the operating temperature of the solar cells increases, their ability to produce voltage diminishes. This is important for system design and performance prediction, as higher ambient temperatures can lead to reduced efficiency and output from the solar panels.

Understanding this inverse relationship enables installers and engineers to account for temperature effects when designing solar energy systems, ensuring that energy yield predictions are adjusted based on temperature variations throughout the year.