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The ISS has 8 solar array wings (often abbreviated "SAW") of two retractable "blankets" of solar cells with a mast between them. Each wing houses almost 33,000 solar cells and when fully extended is 35 metres long length and 12 metres wide. Upon retraction each wing folds into a solar array blanket box which is just 51 centimetres high and 4.57 metres long.

The grand total of 264,000 solar cells deliver about 240 kW (enough for 60 households) at a voltage of 160 V DC, converted to 124 V DC for use on-board.

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12y ago

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The main source of power for the International Space Station (ISS) is its solar arrays, which convert sunlight into electricity. These solar panels provide the energy needed to power the station's systems and support its operations while in orbit.


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