Psionic Harvester

Psionic Harvester generates small amounts of Psionic Energy based on the number of Tenants (only those summoned with Colony Deed Mark II, not with the regular Colony Deed) within the distance of 128 blocks. In 79% cases it will gather Psi-1 Energy, and in 20% cases it will gather Psi-2 Energy. Out of the remaining 1%, it's twice as likely to get Psi-3 Energy than Psi-4 Energy.

It also makes tenants happy, increasing the rent they pay to the Colony Core.