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1. gok+h4[view] [source] 2026-02-02 22:06:22
>>g-mork+(OP)
> it is possible to put 500 to 1000 TW/year of AI satellites into deep space, meaningfully ascend the Kardashev scale and harness a non-trivial percentage of the Sun’s power

We currently make around 1 TW of photovoltaic cells per year, globally. The proposal here is to launch that much to space every 9 hours, complete with attached computers, continuously, from the moon.

edit: Also, this would capture a very trivial percentage of the Sun's power. A few trillionths per year.

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2. moeadh+Lf[view] [source] 2026-02-02 22:47:12
>>gok+h4
In fairness, solar cells can be about 5x more efficient in space (irradiance, uptime).
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3. __alex+Oh[view] [source] 2026-02-02 22:54:10
>>moeadh+Lf
Solar cells have exactly the same power rating on earth as in space surely? What would change is their capacity factor and so energy generation.
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4. bastaw+Mi[view] [source] 2026-02-02 22:57:00
>>__alex+Oh
The atmosphere is in the way, and they get pretty dirty on earth. Also it doesn't rain or get cloudy in space
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5. Punchy+ls[view] [source] 2026-02-02 23:40:15
>>bastaw+Mi
even at 10% (say putting it on some northen pile of snow) it is still cheaper to put it on earth than launch it
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6. mrguyo+Jq3[view] [source] 2026-02-03 18:47:13
>>Punchy+ls
Here in Maine in the depths of winter (late December), 1 m^2 of ground can collect 4 kwh per day (weird units).

That's why people are trying to build solar here. Our power is expensive due partially to failing to build basically any new generation, and some land is very cheap, and the operational cost of a solar farm is minuscule.

Solar farming is basically an idle game in real life and my addiction is making me itchy.

You can overprovision, and you should with how stupidly cheap solar is.

That we aren't spending billions of Federal dollars building solar anywhere we can, as much as we can, is pathetic and stupid and a national tragedy.

We got so excited about dam building that there's no where to build useful dams anymore, and there is significant value to be gained by removing those dams, yet somehow we aren't deploying as much solar as we possibly can?

It's a national security issue. China knows this, and is building appropriately.

The southwest should be generating so much solar power that we sequester carbon from the atmosphere simply because there is nothing else left to do with the power.

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