30 ILCS 500/45-100
For purposes of this Section, "electric vehicle" means a vehicle that is exclusively powered by and refueled by electricity, must be plugged in to charge or utilize a pre-charged battery, and is permitted to operate on public roadways. "Electric vehicle" does not include hybrid electric vehicles and extended-range electric vehicles that are also equipped with conventional fueled propulsion or auxiliary engines. For purposes of this section, "Manufactured in Illinois" means, in the case of electric vehicles, that design, final assembly, processing, packaging, testing, or other process that adds value, quality, or reliability occurs in Illinois.
In awarding contracts requiring the procurement of electric vehicles, preference shall be given to an otherwise qualified bidder or offeror who will fulfill the contract through the use of electric vehicles manufactured in Illinois. Specifications for contracts for electric vehicles shall include a price preference of 20% for electric vehicles manufactured in Illinois. The purchasing agency may require additional information from bidders or offerors to verify whether an electric vehicle is manufactured in Illinois as defined by this Section.
30 ILCS 500/45-100