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

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)

San Marino
fossil fuel: 41.18%
hydro: 58.82%
nuclear: 0%
other: 0%

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)

Serbia and Montenegro
fossil fuel: 62.9%
hydro: 37.1%
nuclear: 0%
other: 0% (2001)

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