Singularity Wiki

Many experiments on Katorga-12 use the power of E99 and this leftover technology can be used to create upgrades. You can purchase upgrades once you've found someone that understands the E99 technology

–Ingame Description

E99 Tech is a collectible item in Singularity, and is the currency used to purchase various upgrades at Augmentors and spare ammo at Weapon Lockers.

Several different types of E99 Tech can be found, and each one has a different value ranging from 50 to 300 E99 Tech points.