Removal of the System upon Expiration or Termination of the Term. Upon the expiration or sooner termination of the Term, if Host has not duly exercised the option to purchase the System (if such option is applicable in the circumstances involved), Seller shall, at its own expense, remove all of the panels and inverters comprising the System from the Site by a mutually convenient date but in no case later than one hundred and eighty (180) days after the Expiration Date (or Termination Date, as applicable), return the Site to its original condition, ordinary wear and tear excepted, and leave the Site in neat and clean order; provided, however, that if Seller has terminated this Agreement pursuant to Section 13.3(b), then Host shall pay the costs incurred by Seller in removing the System from the Site. As set forth in Article 4.2(b), removal of the System does not include removal of the penetrations or fixtures.