U.S. RANK #21 · TN 0.24% OF U.S. GENERATION

Tennessee Electricity Generation & Grid Mix

In 2025, Tennessee (TN) generated 74.77 TWh of electricity (0.24% of U.S. generation, ranked #21 among U.S. states). Its #1 electricity source was Nuclear at 29.33 TWh (39.2% of state output), while low-carbon sources supplied 52.2%.

2025 Generation 74.77 TWh U.S. Rank #21

#1 Power Source Nuclear 39.2% (29.3 TWh)

Low-Carbon Share 52.2% Wind + Solar: 1.9%

Fossil Share 47.8% 5Y Gen Change: -7.3%

CO2 Intensity 324 gCO2/kWh 24.2 Mt CO2 total

2025 Tennessee Grid Fuel Mix Breakdown (100% = 74.77 TWh)

Nuclear: 39.2% (29.33 TWh) Coal: 24.1% (18.03 TWh) Natural Gas: 23.5% (17.55 TWh) Hydroelectric: 10.5% (7.83 TWh) Solar: 1.9% (1.39 TWh) Bioenergy: 0.6% (0.48 TWh)

GRID TELEMETRY · 2025 GENERATION MIX & 2000-2025 SERIES

Tennessee (TN) Electricity Generation by Source (2025)

52.2% Low-Carbon

2025 Total Output: 74.77 TWh · Carbon Intensity: 324 gCO2/kWh

Nuclear

29.33 TWh 39.2% -20%

Coal

18.03 TWh 24.1% +27%

Natural Gas

17.55 TWh 23.5% +12%

Hydroelectric

7.83 TWh 10.5% -39%

Solar

1.39 TWh 1.9% +237%

Bioenergy

0.48 TWh 0.6% -35%

Oil & Other Fossil

0.14 TWh 0.2% +5%

Geothermal & Other

0.02 TWh 0.0% +117%

Source: Ember Yearly Electricity Data & U.S. EIA · Unit: Terawatt-hours (TWh) #1 Power Source: Nuclear (39.2% of grid)

Tennessee Historical Electricity Generation by Fuel (2001-2025)

Year	Total (TWh)	Coal	Gas	Nuclear	Hydro	Wind	Solar	Clean %	gCO2/kWh
2025	74.77	18.03	17.55	29.33	7.83	0.00	1.39	52.2%	324
2024	76.27	17.43	16.48	32.19	8.34	0.01	1.19	55.4%	304
2023	77.88	15.79	15.03	37.94	7.49	0.02	1.03	60.3%	272
2022	78.12	15.89	16.52	35.64	8.71	0.01	0.75	58.3%	282
2021	79.16	18.26	13.99	35.33	10.29	0.03	0.43	59.1%	288
2020	80.66	14.25	15.67	36.69	12.73	0.04	0.41	62.8%	253
2019	82.43	18.69	16.96	35.72	9.51	0.04	0.42	56.5%	299
2018	81.66	20.97	13.40	36.18	9.67	0.04	0.26	57.7%	303
2017	79.15	27.72	10.27	31.82	8.00	0.04	0.18	51.8%	362
2016	79.43	31.17	11.32	29.58	6.07	0.04	0.16	46.3%	402
2015	75.28	30.59	9.32	24.96	9.05	0.05	0.14	46.8%	405
2014	79.57	35.87	6.20	27.67	8.41	0.05	0.09	46.9%	420
2013	79.66	32.49	5.02	28.49	12.40	0.05	0.02	52.8%	378
2012	77.73	35.42	8.08	25.10	8.13	0.05	0.01	43.8%	435
2011	81.11	40.78	3.26	26.92	8.92	0.05	0.00	45.5%	443
2010	82.36	43.67	2.30	27.74	7.42	0.04	0.00	43.9%	459
2009	79.72	41.63	0.41	26.96	9.56	0.05	0.00	47.0%	442
2008	90.67	57.06	0.47	27.03	4.91	0.05	0.00	36.3%	528
2007	95.15	60.24	0.72	28.70	4.24	0.05	0.00	35.7%	532
2006	93.95	60.50	0.66	24.68	7.08	0.05	0.00	34.7%	540
2005	97.16	59.05	0.53	27.80	8.71	0.00	0.00	38.4%	510
2004	97.62	58.06	0.29	28.61	9.59	0.00	0.00	40.0%	499
2003	92.25	54.92	0.63	24.15	11.28	0.00	0.00	39.3%	503
2002	96.12	59.71	0.47	27.57	7.28	0.00	0.00	37.1%	521
2001	96.22	59.73	0.46	28.58	6.21	0.00	0.00	37.0%	522