01 December 2013

Ribeira da Janela mouth and hydroelectric power plant at dusk

Built in 1965, the hydroelectric power plant of Ribeira da Janela, located in the mouth of the stream bearing the same name, is one of the two (the other being the Central da Calheta de Inverno) that is located at sea level.
Contrary to its higher-altitude sisters, which water is channelled in the famous levadas, after energy production, to irrigate the agriculture fields located in the lower altitudes, the Ribeira da Janela plant is a pure energy-generating unit, losing its water to the ocean nearby, after turbination.
A totally automatic installation, the Ribeira da Janela power plant is remotely operated.
The plant, normally operating just one generator in daylight, activates the second turbine-alternator group at evening time, normally at sunset, when the electrical energy consumption increases.
The Ribeira da Janela power plant is responsible for an yearly average production of 8 GWh.
Picture taken with Nikon D300 and Sigma DC 18-50mm 1:2.8 EX Macro HSM. Manfrotto 055NAT3 tripod and Manfrotto 410 Junior Geared Head.
Conversion of the NEF 14 bits to TIFF 16 bits file in Nikon free View NX2 software. Post-processing of the resulting TIFF file and posterior conversion to JPEG for web publishing in Adobe Photoshop Lightroom, ver. 4.1