Power Lines by Anne McCaffrey

In this sequel to Powers That Be , the hardworking inhabits of the sentient planet Petaybee continue their struggles with the magnates controlling Intergal Company. While chairperson Dr. Whittaker Fiske has been convinced of the planet's intelligence--and the necessity of negotiating with it--other members of the board believe that he and the Petaybeans are suffering from a collective delusion.