Tonga
fossil fuel: 100%
hydro: 0%
nuclear: 0%
other: 0% (2001)

Trinidad and Tobago
fossil fuel: 99.8%
hydro: 0%
nuclear: 0%
other: 0.2% (2001)

Tunisia
fossil fuel: 99.5%
hydro: 0.5%
nuclear: 0%
other: 0% (2001)

Turkey
fossil fuel: 79.3%
hydro: 20.4%
nuclear: 0%
other: 0.3% (2001)

Turkmenistan
fossil fuel: 99.9%
hydro: 0.1%
nuclear: 0%
other: 0% (2001)

Turks and Caicos Islands
fossil fuel: 100%
hydro: 0%
nuclear: 0%
other: 0% (2001)

Tuvalu
fossil fuel: NA
hydro: NA
nuclear: NA
other: NA

Uganda
fossil fuel: 0.9%
hydro: 99.1%
nuclear: 0%
other: 0% (2001)

Ukraine
fossil fuel: 48.6%
hydro: 7.9%
nuclear: 43.5%
other: 0% (2001)

United Arab Emirates
fossil fuel: 100%
hydro: 0%
nuclear: 0%
other: 0% (2001)