Talk:Nuclear Cell/@comment-2600:1010:B003:58C4:CC76:D298:165C:4369-20180417150720/@comment-9219-20180814191807

All reactors come with a specific amount of time they can function. Once their lifetime runs out, they become an outline of themselves and have to be replaced.

If you haven`t researched the Manager option for the appropriate reactor, you will have to do so manually. If you had, and it still run out without replacement, then you may have turned "Auto Rebuild" option off (top right corner) or you don`t have enough money to buy it again, in which case you need to either put down something cheaper to produce heat to save up for another nuclear cell, or you might need to sell off some less important infrastructure to get the funds together.