The power source for a Landsat satellite are four solar panels. Each solar panel was 2.3 meters by 1.5 meters.

Allan D Kotin has written:

'Satellite power system (SPS)' -- subject(s): Environmental aspects, Environmental aspects of Satellite solar power stations, Satellite solar power stations

James B. Blackburn has written:

'Satellite power system (SPS)' -- subject(s): Environmental aspects, Environmental aspects of Satellite solar power stations, Satellite solar power stations

Margaret R. White has written:

'Environmental assessment for the Satellite Power System Concept Development and Evaluation Program' -- subject(s): Environmental aspects, Environmental aspects of Satellite solar power stations, Satellite solar power stations

Satellites are usually fitted with a re-chargeable battery, and solar panels. The solar panels absorb energy from the sun, and the batteries store the energy for use by the satellite.