SO₂ Emissions (thousand tons)				SO₂ Rate (lb/mmBtu)				Heat Input (billion mmBtu)
Primary Fuel	2000	2005	2010	2016	2000	2005	2010	2016	2000	2005	2010	2016
Coal	SO₂ Emissions (thousand tons)	10,708	9,835	5,051	1,466	SO₂ Rate (lb/mmBtu)	1.04	0.95	0.53	0.22	Heat Input (billion mmBtu)	20.67	20.77	19.04	13.30
Gas	SO₂ Emissions (thousand tons)	108	91	19	9	SO₂ Rate (lb/mmBtu)	0.06	0.03	0.01	0.00	Heat Input (billion mmBtu)	3.88	5.49	7.06	10.07
Oil	SO₂ Emissions (thousand tons)	384	292	28	3	SO₂ Rate (lb/mmBtu)	0.73	0.70	0.19	0.03	Heat Input (billion mmBtu)	1.05	0.84	0.30	0.16
Other	SO₂ Emissions (thousand tons)	1	4	22	12	SO₂ Rate (lb/mmBtu)	0.20	0.27	0.57	0.17	Heat Input (billion mmBtu)	0.01	0.03	0.08	0.14
Total	SO₂ Emissions (thousand tons)	11,201	10,222	5,120	1,490	SO₂ Rate (lb/mmBtu)	0.88	0.75	0.39	0.11	Heat Input (billion mmBtu)	25.61	27.13	26.48	23.67