Powergrid was initially started as a Powerhouse remix, but was quickly scrapped. Only a small section of Powerhouse was kept, but it's difficult to even tell what it is.
The map is fairly asymmetrical, though each team is given the same number of upper and lower pathways, and the same number of weapons.
Each team has access to a BR, a DMR, a low-magazine Hydra, and a Needler. Each side also has a Ghost, a Mantis, and a Scout Hog.
The map has a set of neutral weapons and powerups, including a Plasma Pistol, a Spartan Laser, a Rocket Launcher, and an Overshield.
The map is very early in design, and needs plenty of testing. It will also certainly go through various changes.