Illinois State (U.S.A.), a land of agriculture, Biofuels, manufacturing, wind power, bituminous coal and services

 Illinois is an exciting dynamic state with an interesting mature market of + 12 million consumers. 

The dollar gross state product for Illinois was estimated to be US$772 billion in 2015. Illinois' state income tax is calculated by multiplying net income by a flat rate.

There are two rates for state sales tax: 6.25% for general merchandise and 1% for qualifying food, drugs, and medical appliances. The property tax is a major source of tax revenue for local government taxing districts.

Illinois' major agricultural outputs are corn, soybeans, hogs, cattle, dairy products, and wheat. In most years, Illinois is either the first or second state for the highest production of soybeans.

Illinois ranks second in U.S. corn production with more than 1.5 billion bushels produced annually.

Illinois is a leader in food manufacturing and meat processing. The Chicago area remains a global center for food manufacture and meat processing, with many plants, processing houses, and distribution facilities concentrated in the area of the former Union Stock Yards.

Illinois also produces wine, and the state is home to two American viticultural areas.

Illinois is one of the nation's manufacturing leaders.

Illinois' economy had moved toward a dependence on high-value-added services, such as financial trading, higher education, law, logistics, and medicine. 

Illinois is a net importer of fuels for energy, despite large coal resources and some minor oil production. Illinois exports electricity, ranking fifth among states in electricity production and seventh in electricity consumption.

According to the Illinois State Geological Survey, 211 billion tons of bituminous coal are estimated to lie under the surface, having a total heating value greater than the estimated oil deposits in the Arabian Peninsula.

Illinois is a leading refiner of petroleum in the American Midwest, with a combined crude oil distillation capacity of nearly 900,000 barrels per day (140,000 m³/d). 

However, Illinois has very limited crude oil proved reserves that account for less than 1% of U.S. crude oil proved reserves.

Nuclear power arguably began in Illinois with the Chicago Pile-1, the world's first artificial self-sustaining nuclear chain reaction in the world's first nuclear reactor, built on the University of Chicago campus.

Illinois has seen growing interest in the use of wind power for electrical generation.

Illinois is ranked second in corn production among U.S. states, and Illinois corn is used to produce 40% of the ethanol consumed in the United States.

The Archer Daniels Midland corporation in Decatur, Illinois is the world's leading producer of ethanol from corn.

The National Corn-to-Ethanol Research Center (NCERC), the world's only facility dedicated to researching the ways and means of converting corn (maize) to ethanol is located on the campus of Southern Illinois University Edwardsville.