20 ILCS 3125/5: Findings.

(a) The legislature finds that an effective energy efficient building code is essential to:

(1) reduce the air pollutant emissions from energy consumption that are affecting the health of residents of this State;

(2) moderate future peak electric power demand;

(3) assure the reliability of the electrical grid and an adequate supply of heating oil and natural gas; and

(4) control energy costs for residents and businesses in this State.

(b) The legislature further finds that this State has a number of different climate types, all of which require energy for both cooling and heating, and that there are many cost-effective measures that can reduce peak energy use and reduce cooling, heating, lighting, and other energy costs in buildings.