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Solar power from space? Actually, it might happen in a couple of years. (arstechnica.com)

submitted 4 hours ago* (last edited 4 hours ago) by threelonmusketeers@sh.itjust.works to c/spaceflight@sh.itjust.works

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In the long term, there's the potential to provide a base load of power to augment the intermittent availability of terrestrial wind and solar energy—a key need if the world is to de-carbonize its electricity generation.

But that's probably putting the cart before the horse. One of the biggest challenges of space-based solar power is that it has always been theoretical. It should work. But will it work? Trying out a low-cost demonstrator mission in the next couple of years is a fine way of finally putting that question to rest.

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[–] RobotToaster@mander.xyz 4 points 2 hours ago (3 children)

It's a good idea, but what happens if one of these high energy LASERs misses the collector?

[–] PyroNeurosis@lemmy.blahaj.zone 1 points 18 minutes ago

I, too, played SimCity 2k.

[–] Etterra@lemmy.world 1 points 33 minutes ago

Nothing. This question came up when microwave meaning technology was conceived. You use a laser from the ground to align the transmitter to the receiver. The target sensor is aligned and shielded such that it can only receive a signal from a single, narrow direction. If the transmission beam deviates out of alignment even a fraction of a degree then the satellite kills the transmission. You can use multiple redundant systems to work along with it, and have both a software and hardware cutoff to stop the transmission beam bring frying anything off-target.

[–] Mihies@programming.dev 1 points 54 minutes ago

If you're lucky, you get free energy!

[–] Someonelol@lemmy.dbzer0.com 4 points 4 hours ago

It's gonna be interesting to see how hardware that's meant to run a lot of power through it will survive over time in the harsh radiation conditions of space over a prolonged mission, even if it were in LEO. A lot of these components would have to run at lower than intended voltages to provide operational margins of stacking single event effects, which is a huge problem for something that's supposed to act as a kind of power plant. Mitigating failures with redundant components would also not be very effective if they're effectively the same design as they'd be susceptible to the same failure modes as the parts they're supposed to substitute during the mission.

Good luck to them either way. We need creative ways to get a constant source of renewable energy to get us off fossil fuels.

[–] threelonmusketeers@sh.itjust.works 1 points 4 hours ago

I'm still skeptical, but I'm glad that some folks are going to try.