Electrical system of the International Space Station
The electrical system of the International Space Station is a critical part of the International Space Station (ISS) as it allows the operation of essential life-support systems, safe operation of the station, operation of science equipment, as well as improving crew comfort. The ISS electrical system uses solar cells to directly convert sunlight to electricity.
Source: Wikipedia — Electrical system of the International Space Station (CC BY-SA 4.0)