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Good enough for what? If we're talking about providing for the energy needs of the Earth, that'd be way way overkill too. See how much solar we'd need on Earth

Good enough for what? If we're talking about providing for the energy needs of the Earth, that'd be way way overkill too. See how much solar we'd need on Earth to power our needs: http://www.techinsider.io/map-shows-solar-panels-to-power-the-earth-2015-9 http://www.techinsider.io/map-shows-solar-panels-to-power-th... If we're talking about powering some future hypothetical civilization.. Yeah it'd have to be ginormous and have huge energy requirements to warrant that much energy. Maybe if they wanted to channel that energy and blow up a few planets it could be useful..

majewsky 10y ago
> to power our needs Demand follows supply.
veli_joza 10y ago
Building the ring would be interesting engineering challenge. Once you build it with sun in its center of mass, it's in unstable equilibrium, so you only need to compensate for the drift. But until it is built, your components have to orbit the sun. So the finished ring would also keep this momentum and it would be rotating around its center.