Kryptonite mine
Kryptonite goes into almost everything – research, ships, defense. The kryptonite mine is one of your core mines from day one.

Next to metal, kryptonite is the second major building material. Research, warships and defense units devour lots of it, and the Microsystem accelerator consists largely of it. Skimp here and you'll slow down your whole development later on. Like the pig iron mine, the Kryptonite mine is already at level 1 on every new planet.
Keep your Kryptonite mine roughly level with your Pig iron mine. It needs a bit more energy per level than the pig iron mine – compare the energy demand column with the energy your Fusion plant delivers. Mining technology boosts kryptonite output as well, and like all mines it stays affordable well into high levels.
Background
Kryptonite, due to its crystalline structure, is ideal to create alloys, which are distinguished by their endurance and resistance. It's use in shipbuilding results in stronger ship hulls and it is required in laser technology. As a construction material it is used to enhance buildings to resist the extreme temperatures on many planets.
Levels at a glance
| Level | Pig iron | Kryptonite | Build time | Kryptonite / hour | Energy needed |
|---|---|---|---|---|---|
| 1 | 90 | 55 | 14 s | 14 | -5 |
| 2 | 136 | 84 | 21 s | 32 | -11 |
| 3 | 206 | 126 | 31 s | 55 | -20 |
| 4 | 310 | 190 | 47 s | 85 | -31 |
| 5 | 468 | 286 | 1 min 11 s | 123 | -45 |
| 6 | 707 | 432 | 1 min 47 s | 170 | -62 |
| 7 | 1,067 | 652 | 2 min 41 s | 228 | -83 |
| 8 | 1,611 | 985 | 4 min 4 s | 299 | -110 |
| 9 | 2,433 | 1,487 | 6 min 8 s | 387 | -142 |
| 10 | 3,674 | 2,245 | 9 min 16 s | 495 | -182 |
| 11 | 5,547 | 3,390 | 13 min 59 s | 626 | -230 |
| 12 | 8,376 | 5,119 | 21 min 7 s | 786 | -288 |
| 13 | 12,647 | 7,729 | 31 min 53 s | 979 | -359 |
| 14 | 19,097 | 11,670 | 48 min 8 s | 1,213 | -445 |
| 15 | 28,835 | 17,622 | 1 h 12 min | 1,495 | -549 |
| 16 | 43,541 | 26,609 | 1 h 49 min | 1,834 | -673 |
| 17 | 65,747 | 40,179 | 2 h 45 min | 2,241 | -823 |
| 18 | 99,278 | 60,670 | 4 h 10 min | 2,728 | -1,002 |
| 19 | 149,909 | 91,612 | 6 h 17 min | 3,312 | -1,216 |
| 20 | 226,363 | 138,333 | 9 h 30 min | 4,009 | -1,472 |
| 21 | 341,808 | 208,883 | 14 h 21 min | 4,841 | -1,778 |
| 22 | 516,130 | 315,413 | 21 h 40 min | 5,833 | -2,142 |
| 23 | 779,356 | 476,273 | 1 d 8 h 44 min | 7,013 | -2,576 |
| 24 | 1,176,827 | 719,172 | 2 d 1 h 26 min | 8,415 | -3,091 |
| 25 | 1,777,008 | 1,085,949 | 3 d 2 h 39 min | 10,081 | -3,703 |
| 26 | 2,683,282 | 1,639,783 | 4 d 16 h 43 min | 12,057 | -4,429 |
| 27 | 4,051,755 | 2,476,073 | 7 d 2 h 12 min | 14,399 | -5,289 |
| 28 | 6,118,150 | 3,738,870 | 10 d 17 h | 17,172 | -6,308 |
| 29 | 9,238,406 | 5,645,693 | 16 d 4 h | 20,453 | -7,513 |
| 30 | 13,949,993 | 8,524,996 | 24 d 10 h | 24,332 | -8,938 |
| 31 | 21,064,490 | 12,872,744 | 36 d 20 h | 28,915 | -10,622 |
| 32 | 31,807,379 | 19,437,843 | 55 d 16 h | 34,325 | -12,609 |
| 33 | 48,029,142 | 29,351,142 | 84 d 1 h | 40,707 | -14,953 |
| 34 | 72,524,004 | 44,320,225 | 126 d 22 h | 48,232 | -17,718 |
| 35 | 109,511,246 | 66,923,539 | 191 d 16 h | 57,099 | -20,975 |
| 36 | 165,361,981 | 101,054,544 | 289 d 10 h | 67,539 | -24,810 |
| 37 | 249,696,591 | 152,592,361 | 437 d 1 h | 79,828 | -29,324 |
| 38 | 377,041,852 | 230,414,465 | 659 d 23 h | 94,283 | -34,634 |
| 39 | 569,333,196 | 347,925,842 | 996 d 13 h | 111,279 | -40,878 |
| 40 | 859,693,126 | 525,368,022 | 1,504 d 19 h | 131,253 | -48,215 |
| 41 | 1.30 B | 793,305,712 | 2,272 d 6 h | 154,714 | -56,833 |
| 42 | 1.96 B | 1.20 B | 3,431 d 2 h | 182,261 | -66,953 |
| 43 | 2.96 B | 1.81 B | 5,180 d 23 h | 214,591 | -78,829 |
| 44 | 4.47 B | 2.73 B | 7,823 d 6 h | 252,518 | -92,762 |
| 45 | 6.75 B | 4.12 B | 11,813 d 3 h | 296,996 | -109,100 |
| 46 | 10.19 B | 6.23 B | 17,837 d 20 h | 349,135 | -128,254 |
| 47 | 15.39 B | 9.40 B | 26,935 d 3 h | 410,234 | -150,698 |
| 48 | 23.24 B | 14.20 B | 40,672 d 1 h | 481,807 | -176,990 |
| 49 | 35.09 B | 21.44 B | 61,414 d 20 h | 565,622 | -207,779 |
| 50 | 52.98 B | 32.38 B | 92,736 d 9 h | 663,740 | -243,822 |
| 51 | 80.00 B | 48.89 B | 140,031 d 23 h | 778,567 | -286,004 |
| 52 | 120.80 B | 73.82 B | 211,448 d 6 h | 912,908 | -335,354 |
| 53 | 182.41 B | 111.47 B | 319,286 d 21 h | 1,070,033 | -393,073 |
| 54 | 275.44 B | 168.32 B | 482,123 d 5 h | 1,253,756 | -460,563 |
| 55 | 415.91 B | 254.17 B | 728,006 d 1 h | 1,468,520 | -539,456 |
| 56 | 628.02 B | 383.79 B | 1,099,289 d 3 h | 1,719,503 | -631,654 |
| 57 | 948.31 B | 579.52 B | 1,659,926 d 14 h | 2,012,740 | -739,374 |
| 58 | 1.43 T | 875.08 B | 2,506,489 d 4 h | 2,355,259 | -865,197 |
| 59 | 2.16 T | 1.32 T | 3,784,798 d 15 h | 2,755,247 | -1,012,131 |
| 60 | 3.26 T | 2.00 T | 5,715,045 d 22 h | 3,222,239 | -1,183,679 |
| 61 | 4.93 T | 3.01 T | 8,629,719 d 9 h | 3,767,334 | -1,383,918 |
| 62 | 7.44 T | 4.55 T | 13,030,876 d 6 h | 4,403,458 | -1,617,596 |
| 63 | 11.24 T | 6.87 T | 19,676,623 d 4 h | 5,145,654 | -1,890,240 |
| 64 | 16.97 T | 10.37 T | 29,711,701 d | 6,011,430 | -2,208,280 |
| 65 | 25.63 T | 15.66 T | 44,864,668 d 12 h | 7,021,163 | -2,579,202 |
| 66 | 38.70 T | 23.65 T | 67,745,649 d 11 h | 8,198,558 | -3,011,715 |
| 67 | 58.44 T | 35.71 T | 102,295,930 d 17 h | 9,571,195 | -3,515,949 |
| 68 | 88.25 T | 53.93 T | 154,466,855 d 10 h | 11,171,156 | -4,103,690 |
| 69 | 133.25 T | 81.43 T | 233,244,951 d 16 h | 13,035,754 | -4,788,644 |
| 70 | 201.21 T | 122.96 T | 352,199,877 d | 15,208,379 | -5,586,751 |
| 71 | 303.83 T | 185.67 T | 531,821,814 d 7 h | 17,739,488 | -6,516,546 |
| 72 | 458.78 T | 280.37 T | 803,050,939 d 15 h | 20,687,741 | -7,599,578 |
| 73 | 692.76 T | 423.35 T | 1,212,606,918 d 20 h | 24,121,332 | -8,860,897 |
| 74 | 1.05 Qa | 639.26 T | 1,831,036,447 d 11 h | 28,119,525 | -10,329,621 |
| 75 | 1.58 Qa | 965.29 T | 2,764,865,035 d 16 h | 32,774,447 | -12,039,592 |
| 76 | 2.39 Qa | 1.46 Qa | 4,174,946,203 d 21 h | 38,193,156 | -14,030,138 |
| 77 | 3.60 Qa | 2.20 Qa | 6,304,168,767 d 20 h | 44,500,052 | -16,346,957 |
| 78 | 5.44 Qa | 3.32 Qa | 9,519,294,839 d 11 h | 51,839,671 | -19,043,144 |
| 79 | 8.21 Qa | 5.02 Qa | 14,374,135,207 d 14 h | 60,379,924 | -22,180,380 |
| 80 | 12.40 Qa | 7.58 Qa | 21,704,944,163 d 11 h | 70,315,861 | -25,830,316 |
Values without speed-up and assistants. Costs are for upgrading to the given level. Set your development center and microsystem accelerator above and the build times adjust.