Replaces everything after the enacting clause. Amends the Property Assessed Clean Energy Act. Provides that a local unit of government may sell or assign assessment contracts. Provides that the term "energy efficiency improvement" includes energy efficiency projects as defined in the Illinois Finance Authority Act. Provides that the term "energy project" includes new construction. Provides that a property assessed clean energy program may be administered by one or more program administrators (currently, one program administrator). Provides that the Illinois Finance Authority may issue bonds in connection with property assessed clean energy programs. Provides that the imposition of an assessment under the Act is exempt from other statutory procedures and requirements concerning assessments and taxes against property.