Me. Rev. Stat. tit. 30-A, § 1902

The jail authority formed under this chapter may acquire and hold real and personal property that the jail authority considers necessary for its purposes and is granted the right of eminent domain. The jail authority may take and hold, either by exercising its right of eminent domain or by purchase, lease or otherwise, for public uses any land, real estate, easements or interest in land, real estate or easements necessary for construction and operating the multicounty jail.