Ill. Admin. Code tit. 14, § 521.90
a) The Department and each qualifying data center seeking a certificate of exemption or tax credits shall enter into an MOU. The MOU shall specify the terms and conditions of the exemptions or credits. It shall define the rights and responsibilities of the Department and of the data center owner or operator (and, if applicable, its tenants). Provisions with which the data center owner/operator/ tenants will be contractually bound to comply include, but are not limited to, the following: