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Hydroelectric
Geogreen currently has five hydroelectric power stations located in Lombardy and
Piedmont, with total electric power of about 10MW. The average annual production
is about 50 million kWh.
Furthermore Geogreen manages hydroelectric power stations owned by customers in
the province of Bergamo, Italy.
Coldimosso power station
The Coldimosso plant is situated in Susa (Province of Torino, Italy) and is an interesting
example of the industrial architecture of the early 1900s.
Water from the Dora Riparia River is conveyed through penstocks to the turbines
and then flows back into the river. After the 2007 revamping, the two generator
units with Francis turbines boast total power of 3,200 kW and average annual production
of 14 million kWh.
Campignano power station
Dating back to the 1940s, the Campignano power station is located in the municipality
of Parre (Province of Bergamo [BG], Italy) and utilizes the waters of the Serio
River in the municipality of Villa d'Ogna (BG).
The diversion canal is 1,793 metres long. After the turbine at the end of the penstock,
the tailrace extends for another 150 metres to its outlet in the Serio River. The
hydroelectric unit is a Kaplan turbine with installed power of 1,500 kW and average
yearly production of 9 million kWh.
Cunella power station
The Cunella power plant is situated in the Cunella locality in the municipality
of Villa d'Ogna (BG), Italy and draws water from the Serio River in the Ponte di
Ludrigno locality in the municipality of Ardesio (BG). The plant was built in 1960.
Water flows through an open canal for 296 metres and then through a tunnel for 1,100
metres . At the outlet of the tunnel the water flows through the penstock, through
the turbine and then back into the Serio River. The generator unit is a Francis
turbine with installed power of 1,380 kW and average annual production of 8 million
kWh.
Lenna power station
The Lenna plant, located in Lenna (BG), Italy, was constructed in 1937 and renovated
in 1998.
Water from the Brembo River is conveyed to the power station by a penstock - partially
open and partly underground - through the municipalities of Olmo al Brembo (BG)
and Piazza Brembana (BG). From the plant, the water is released directly into the
river. After the 2006 revamping, the generator unit is made up of two Francis turbines,
with installed power of 3,000 kW; average annual production is 16 million kWh.
Molino Nuovo power station
The Molino Nuovo power station is located in the Molino Nuovo locality in the municipality of Ferrera Erbognone (Province of Pavia, Italy). The power station, completed in November 2010, takes water from Agogna Torrent. The unit has two Kaplan turbines, 780 kW of power each, and the power station produces 7 million kWh per year.
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