It all depends how the leases are written and who's responsible for the solar panels. Since the panels could potentially be the landlord's, warehouse tenant's,

It all depends how the leases are written and who's responsible for the solar panels. Since the panels could potentially be the landlord's, warehouse tenant's, or a third party roof tenant's, it could be written up in a variety of ways. The Landloard is going to be the most concerned about it as A) it could potentially effect the base building, and/or B) tenants may take issue with a leak. Chances are the repair would be rolled up into CAM (Common Area Maintenace) charges, which are generally dispersed to the tenant based on an arrangement in the lease (typically % of cost based on % of sq ft of the property). The best chance for it to be handled some other way is if the warehouse tenant and the solar tenant are one in the same. The landlord will still likely be involved, but chances are the tenant will do the repair.