Saint Pierre and Miquelon
fossil fuel: 100%
hydro: 0%
nuclear: 0%
other: 0% (2001)

Saint Vincent and the Grenadines
fossil fuel: 69.3%
hydro: 30.7%
nuclear: 0%
other: 0% (2001)

Samoa
fossil fuel: 58%
hydro: 42%
nuclear: 0%
other: 0% (2001)

Sao Tome and Principe
fossil fuel: 41.2%
hydro: 58.8%
nuclear: 0%
other: 0% (2001)

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

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

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

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

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

Slovakia
fossil fuel: 30.3%
hydro: 16%
nuclear: 53.6%
other: 0% (2001)