The service life of the Earth satellite 100 will depend on the customer's requirements; however, it is expected that the plasma beam generators may be used during summer peak months and during daylight hours only to reserve energy and thruster fuel. Assuming 120 days a year of operation, with average of four (4) hours a day, the combination of four 500 watt-second plasma generators will require 691 kg of precursor gas, while the combination of two 6000 watt-second plasma generators will require 4146 kg of precursor gas.