EnerGuide

EnerGuide is a 26th Century Company creating Generators to produce power for facilities running on older power systems. The company is likely earth-based, since an EnerGuide building is seen in what appears to be the business district of New Mombasa. The generators proved very useful for Marines fighting the Covenant near Voi, during the Battle of Earth in 2552. They were widely used throughout UNSC facilities at the time due to electrical power failure in recent battles.

Trivia

 * The current logo, as seen on the New Mombasa building, features a tilted lowercase "e" inside of a partial circle. EnerGuide is then spelled out below the symbol.
 * Another logo has been seen on the labels of generators, which spells out  in block letters except for the "g," which is represented by a circle with a triangle on the right quadrant of the circle to form a "g"-like symbol.