I'm curious why so few ppl\companies use solar panels? So why don't we use it?
Do you have several panels in orbit that beam you the energy around the clock?
You don't need this to save power. You use the grid when there is no sun, and when there is sun the power is free, idealistically halving your bill. But wait, there is more... What if you overproduce power when there is sun? Depending on country/state, the power meter goes backwards. You can either get the bill close to zero, or even go negative so they will deduct it from your next bill (and in some cases even pay you).
Given the amount of energy large mining operations use, this is harder to see for them than for small miners or home users. But it works the same. Each panel you add, will reduce your power bill. Is THAT simple.
Elon Musk has access to BOTH solar panels, batteries AND space. He could actually think of sending a satellite to microwave energy back down if that ever becomes feasible. But in the meantime, a Grid Tie Inverter and panels is all you need, and you can start with a few hundred dollars, much less than a late model asic miner, and its going to last you decades.
Solar and other renewables such as wind turbines are very attractive in the most expensive electricity countries like South Korea, even for domestic home use it makes no sense NOT to buy into it.