Fusion Core

The “Fusion Core” upgrade increases your [Battlecruisers]] energy produced by its power core, and increases the max shield strength. Other ways to increase produced power is using a power dock or increasing the energy produced by small ships already docked via the vessel energy upgrade. Fusion core upgrades are taken into account when you increases the core output from the energy console.

http://i.imgur.com/bPysUma.jpg Upgrade

Upgrade Requirements, Prices & Research Times

Fusion Core
Each level: Increases power core energy production by 10GW Increases max shields by 250
Level Price Time 1 50 15 5 4 2 (t1) 65 25 10 4 3 (t2) 80 35 15 4 4 95 45 20 4 5 (t3) 110 55 25 4 6 125 65 30 4