system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why isn't solar power the most used source for electricity?

Why isn't solar power the most used source for electricity?
I feel like the cheapest form of electricity should be collected and regulated everywhere. I'm just curious why it isn't.
gpt
Because it's the least dense form of energy available to us. You can only get about 150 watts per square meter out of sunlight. That's barely enough to run a lightbulb. Solar power is plentiful and free, but *very* paltry unless you want to spend billions to pave over whole states with PV arrays.