Electricity Net Generation by Fuel, 1990, 1995-1999 Illinois

Category 1999 1998 1997 1996 1995 1990 Percent Change- 1996-1997 Average Annual Percent Change
1995-1999 1990-1999
Total (million kWh) 163,589 138,747 135,330 148,007 148,978 129,228 17.90 2.37 2.65
   Coal (percent) 45.33 54.46 57.66 49.62 43.33 42.55 -1.9 3.5 3.4
   Natural Gas (percent) 3.24 4.03 3.47 2.05 2.81 1.30 -5.3 6.1 13.7
   Petroleum (percent) .47 .66 .37 .56 .62 .34 -16.9 -4.7 6.3
   Hydroelectric (percent) .03 .10 .08 .07 .08 .10 -62.9 -19.5 -9.4
   Nuclear (percent) 49.73 40.07 37.74 47.14 52.68 55.63 46.3 .9 1.4
   All Others (percent) 1.16 .68 .67 .46 .43 .09 101.8 31.0 36.3

       * = For detailed data, the absolute value is less than 0.5; for percentage calculations, the absolute value is less than 0.05 percent.
       Notes: Electricity Net Generation: Electric utility and nonutility values for net versus gross generation may not be summed directly.  Values for net generation from nonutility power producers were estimated using a gross-to-net generation conversion methodology (Electric Power Annual 1996, Vol.  II, "Technical Notes." pp.  110-111)."Average Annual Percent Change" is derived as the nth root of the ratio of the nth-period value to base period value, quantity minus 1 (See Coal Industry Annual 1996, "Technical Notes," p.  247).
       Sources: Energy Information Administration, Form EIA-759, "Monthly Power Plant Report"; Form EIA-867, "Annual Nonutility Power Producer Report.