Solar PV Cells on the International Space Station

The International Space Station uses 262,400 Multijunction solar cells (4 solar arrays) with high-efficiency that can reach up to 34% .  The PV arrays can generate electricity between 84 to 120 kW. The space station’s solar arrays were installed over several space shuttle missions.

The PV system produces more power than the station needs. Where 60% of generated energy goes to charge batteries. The battery system is used when the arrays are fully or partially shaded by the earth.

Solar Array Facts

• Together the arrays contain a total of 262,400 solar cells and cover an area of about 27,000 square feet (2,500 square meters) — more than half the area of a football field.
• A solar array’s wingspan of 240 feet (73 meters) is longer than a Boeing 777’s wingspan, which is 212 feet (65 meters).
• The space station’s electrical power system is connected by eight miles (12.9 kilometers) of wire.

Story Image Credit: ESA/NASA

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The above post is reprinted from materials provided by NASA. Note: Materials may be edited for content and length.