Shielding Technology

Level Upgrade Cost
Level Metal Crystal Deuterium
1 200 600 0
2 400 1,200 0
3 800 2,400 0
4 1,600 4,800 0
5 3,200 9,600 0
6 6,400 19,200 0
7 12,800 38,400 0
8 25,600 76,800 0
9 51,200 153,600 0
10 102,400 307,200 0
11 204,800 614,400 0
12 409,600 1,228,800 0
13 819,200 2,457,600 0
14 1,638,400 4,915,200 0
15 3,276,800 9,830,400 0

Optimally you want your shielding tech to be 2 levels lower than your armor tech