system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible for any electric generator to have an efficiency that approaches 100%?

I know that different types of generators have a maximum theoretical efficiency (such as wind power) that's determined by the way the energy is physically derived. I also know that it's practically impossible for any generator to have an efficiency of 100% due to energy being given off as heat and whatnot. So, are there any kinds of generators where the efficiency at least approaches 100% rather than a lower value?
gpt
It depends what you are considering an electric generator. The turbines used in hydroelectric power stations can have efficiencies of up to 95%. The generators they are attached to are typically around 98% efficient. However, overall system efficiency is around 85-90% due to losses in the penstocks, etc.