What powers our older satellites in space? They have been up there for close to 100 years and still work.?

If the technology for solar power is close to 100 years old and the satellites still work how come we can’t power our homes and cars and etc. Surely we have much better solar panels today than almost 100 years ago. What kind of solar battery can last so long that we can keep recharging it for over 100 years?

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