Dyson sphere construction

Often in science fiction, writers attribute the enormous energy capability of an advanced civilization to Dyson spheres. I've never heard of a detailed schematic of how the energy from the star is utilized. My question is "What is the most energy absorbant form of a Dyson sphere?" Would lining the inside with solar panels be the best option? What about a water heat transfer? Also, what would the most cost-efficient way of transporting this energy be? Long wires? Microwave electricity (Look it up. It's awesome.)?

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Dyson sphere construction

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