Solar Plant

## Summary

* The Solar Plant unlocks at Area 72, and costs 20 solar panels.
* Electricity is used for Level 8+ Mining Stations, Oil Pumps, and Red Lasers.
	+ Because you will also have access to the Wind Turbine if you can build the Solar Plant, and both plants generate +1 electricity per level, you should generally speaking always consider selling your panels and upgrading your Turbine instead of upgrading your Plant - not only may it cost fewer coins, but it will certainly cost fewer rares at Solar Plant 4 and above, as the Turbine never costs rares.
* The cost of upgrading to the next level are as follows:

1. 30 minutes and 20 Solar Panels
2. 10 minutes and 10 Solar Panels
	* You can sell 10 Solar Panels for 690K coins, enough for a level 2 Wind Turbine with change left over.
3. 20 minutes and 20 Solar Panels
	* You can sell 20 Solar Panels for 1.38M coins, enough for a level 3 Wind Turbine with change left over.
4. 30 minutes and 50 Solar Panels + 1 Arcanite
	* You can sell 50 Solar Panels for 3.45M coins, enough for a level 7 Wind Turbine with change left over.
5. 35 minutes and 85 Solar Panels + 1 Anaptanium
	* You can sell 85 Solar Panels for 5.865M coins, enough for a level 12 Wind Turbine with change left over.
6. 40 minutes and 115 Solar Panels + 1 Thorium
	* You can sell 115 Solar Panels for 7.935M coins, enough for a level 16 Wind Turbine with change left over.
7. 45 minutes and 145 Solar Panels + 1 Saronite
	* You can sell 145 Solar Panels for 10.05M coins, enough for a level 20 Wind Turbine with change left over.
8. 50 minutes and 175 Solar Panels + 1 Trillium
9. 55 minutes and 210 Solar Panels + 1 Red Beryl
10. 60 minutes and 240 Solar Panels + 1 Moonstone
11. 65 minutes and 270 Solar Panels + 2 Arcanite
12. 70 minutes and 300 Solar Panels + 2 Anaptanium
13. 75 minutes and 330 Solar Panels + 2 Thorium
14. 80 minutes and 365 Solar Panels + 2 Saronite
15. 85 minutes and 395 Solar Panels + 2 Trillium
16. 90 minutes and 425 Solar Panels + 2 Red Beryl
17. 95 minutes and 455 Solar Panels + 2 Moonstone
18. 100 minutes and 488 Solar Panels + 3 Arcanite
19. 105 minutes and 520 Solar Panels + 3 Anaptanium
20. 115 minutes and 600 Solar Panels + 3 Thorium
21. 135 minutes and 680 Solar Panels + 3 Saronite
22. 155 minutes and 760 Solar Panels + 3 Red Beryl
23. 175 minutes and 840 Solar Panels + 3 Arcanite
24. 3 hours 15 minutes and 920 Solar Panels + 3 Anaptanium
25. 3 hours 35 minutes and 1,000 Solar Panels + 4 moonstone
26. 3 hours 55 minutes and 1,100 Solar Panels + 4 Thorium
27. 4 hours 15 minutes and 1,200 Solar Panels + 4 Trillium
28. 4 hours 35 minutes and 1,300 Solar Panels + 4 Saronite
29. 4 hours 55 minutes and 1,400 Solar Panels + 4 Red Beryl
30. 5 hours 15 minutes and 1,500 Solar Panels + 4 Arcanite

The total number of solar panels you need for all 30 levels is 15,918, but as you can see above, there is a strong bias for later levels to cost more panels. Here is the cumulative number of panels you need.

1. 20
2. 30
3. 50
4. 100
5. 185
6. 300
7. 445
8. 620
9. 830
10. 1,070
11. 1,340
12. 1,640
13. 1,970
14. 2,335
15. 2,730
16. 3,155
17. 3,610
18. 4,098
19. 4,618
20. 5,218
21. 5,898
22. 6,658
23. 7,498
24. 8,418
25. 9,418
26. 10,518
27. 11,718
28. 13,018
29. 14,418
30. 15,918

The cost in rares for each rare proceeds as follows, in terms of the cumulative cost:

Anaptanium: 1, 3, 6, 9

Arcanite: 1, 3, 6, 9, 13

Moonstone, Trillium: 1, 3, 7

Red Beryl, Saronite, Thorium: 1, 3, 6, 10