- Assembly of silicon cells used on satellites to convert sunlight into electric power. Solar arrays have grown during the space age into structures capable of producing many kilowatts of power from areas of many tens of square metres of material. In the future, space stations will demand even more electricity, and larger arrays will be used along with new technology, including a change to new materials like gallium arsenide instead of silicon, and the use of focussing mirrors to concentrate more light on a given area of material.
- synonym solar panel
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