According to the Lab and Skylark pages, the Ancient Generator artifact was the backup generator for the Skylark?
"The Ship does have a backup core, which was salvaged, but barely has enough power to run the Ship, and is used as the generator for the Lab."
I went back to the Lab to talk to some of the NPC's, all of which have said they know nothing about it. I even went on Youtube to look up a video about the Ancient Generator mission. Nothing was mentioned about the artifact being a backup generator for the Skylark.
Perhaps whoever edited the pages wasn't very clear on the info.