Crestuma–Lever Dam ( pt, Barragem de Crestuma-Lever, links=no) is a
concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...
gravity dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. ...
on the
Douro. It is located in the municipality
Vila Nova de Gaia, in
Porto District,
Portugal
Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...
.
Construction of the dam began in 1976. The dam was completed in 1985. It is owned by ''Companhia Portuguesa de Produção de Electricidade'' (CPPE).
Dam
Crestuma–Lever Dam is a 25.5
m tall (height above foundation) and 470 m long gravity dam with a crest altitude of 25.5 m. The volume of the dam is 205,000 m³. The
spillway with 8 gates is part of the dam body (maximum discharge 26,000 m³/s).
Reservoir
At full reservoir level of 13 m (maximum flood level of 21.5 m) the reservoir of the dam has a surface area of 12.98 km² and a total capacity of 110 mio. m³.
The active capacity is 22.5
(16
or 19
) mio. m³.
Power plant
The
run-of-the-river hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
power plant was commissioned in 1985
(1986).
It is operated by
EDP. The plant has a
nameplate capacity of 117
(105
or 108
)
MW. Its average annual generation is 360
(311,
363,
366.9,
or 399
)
GWh
A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy: one kilowatt of power for one hour. In terms of SI derived units with special names, it equals 3.6 megajoules (MJ). Kilowatt-hours are a common bil ...
.
The power station contains 3
Kaplan turbine-generators (horizontal axis) with 39 (36
) MW (36.1
MVA) each in a dam powerhouse located on the left side of the dam. The turbine rotation is 83.3 rpm. The minimum
hydraulic head
Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22.
It is usually measured as a liquid surface elevation, expressed in units of length, ...
is 6.8 m, the maximum 12.6 m. Maximum flow per turbine is 450 m³/s.
The turbines and generators were provided by
Sorefame
Sorefame (an abbreviation of ''Sociedades Reunidas de Fabricações Metálicas'') was a Portuguese manufacturer of railway rolling stock and industrial equipment, such as dam gates equipment. The company was established in 1943.
In the 1990s the ...
.
Lock
On the left side of the dam is a
lock, which can handle ships with the following maximum properties: 83 m in length, 11.40 m on the beam, 3.8 m load-draught and a cargo capacity of 2500 tons.
See also
*
List of power stations in Portugal
The following page lists some power stations in Portugal.
Cogeneration
Geothermal
Hydroelectric
Thermal
See also
* List of power stations in Europe
* List of largest power stations in the world
References
{{commons cate ...
*
List of dams and reservoirs in Portugal
References
{{DEFAULTSORT:Crestuma-Lever Dam
Dams in Portugal
Hydroelectric power stations in Portugal
Gravity dams
Dams completed in 1985
Energy infrastructure completed in 1985
1985 establishments in Portugal
Buildings and structures in Porto District
Dams on the Douro River
Locks of Portugal
Run-of-the-river power stations