Energy required:

1. Instrument and computer require 575 watts
2. The receiving antenna requires 25 watts per orbit
3. The sending antenna requires (2 x 25) 50 watts per orbit
4. The data recorder requires 100 watts to record + (2 x 50) 100 watts to playback making 200 watts needed for the data recorder

The satellite requires 850 watts per orbit to function.

1. Two batteries are needed to store twice the required energy for the satellite. Therefore, each battery must be hold 850 watts of power. Each battery is 1.7 meters in actual size.
2. The solar array must produce (850 x 2) 1700 watts of power.