Alto Mallero
Location: SO
Operator: Tozzi Renewable Energy SpA
Configuration: 1 X 1.13 MW, 1 X 3 MW, 1 X 410 kW, 1 X 600 kw Pelton/Francis
Operation: 2001
T/G supplier: Bouvier, Tamanini
Quick facts: This plant is in Valmalenco Chiareggio.

Angelo Bertini Rebuild
Location: MI
Operator: Edison SpA
Configuration: 4 X 3.16 MW Francis
Operation: 2002
T/G supplier: VA TECH
Quick facts: Bertini was constructed between 1895 and 1898 in Paderno d'Adda and named for Angelo Bertini, who supervised the project and was also general manager of Societe Edison between 1891 and 1915. At completion, it was one of the largest power stations in Europe and its 32km, 13.5kV transmission tie-line was a world record. The original equipment at the Bertiini plant consisted of seven 1.5-MW sets. Paolo Milani and Guido Semenza were the lead hydraulic and electrical engineers, respectively. The turbines were supplied by Milan's Riva & Monneret, who had just built turbines for the Niagara project, and the generators were sourced from Brown Boveri with transformers from Ganz and  switches from General Electric.

Armisa
Location: SO
Operator: Edison SpA
Configuration: 2 X 7.29 MW Pelton/Francis
Operation: 1929
T/G supplier: ??
Quick facts: This plant has two generators, each driven by a Pelton turbine and a Francis turbine. It was rebuilt in 1997/98.

Photograph courtesy of Edison SpA
Posted 18 Feb 2008

Photograph courtesy of ERG Renew
Posted 27 Jun 2010

Photograph courtesy of ERG Renew
Posted 27 Jun 2010

Champagne I&II
Location: AO
Operator: CVA SpA
Configuration: 3 X 3.8 MW, 2 X 13.5 MW Pelton
Operation: 1921-1938
T/G supplier: ??
Quick facts: The Champagne I building is a fine example of industrial architecture dating to the Belle Epoque era. The site is open for tours and the interior features many attractive fittings and wall treatments.

Photograph courtesy of ERG Renew
Posted 27 Jun 2010

Gressoney
Location: AO
Operator: CVA SpA
Configuration: 2 X 5.5 MW
Operation: 1921
T/G supplier: ??

Photograph courtesy of GSE SpA
Posted 25 May 2009

Guido Semenza-I
Location: BG
Operator: Edison SpA
Configuration: 2 X 3.4 MW Kaplan
Operation: 1920
T/G supplier: Riva, TIBB
Quick facts: This is a plant of historical importance on the left bank of the Adda River near the Robbiate Dam. Construction began in 1917. The plant designer was Paolo Milani and the electric work was done by Guido Semenza. The project manager was Angelo Bertini, technical director at Edison. The plant was rebuilt in 2001

Grosotto
Location: SO
Operator: A2A SpA
Configuration: 1 X 10 MW Pelton
Operation: 1910
T/G supplier: ??
Quick facts: Grosotto ran with three 10-MW sets until a major flood in July 1987 put the facility and its sister plant Boscaccia out of service. A new 10-MW T/G set was commissioned in Oct 2004.

Photograph courtesy of A2A SpA
Posted 8 Aug 2009

Grosio
Location: SO
Operator: A2A SpA
Configuration: 3 X 107 MW Pelton, 1 X 110 MW Francis
Operation: 1960-2002
T/G supplier: Ansaldo, Voith, ABB
Quick facts: Construction at Grosio started in 1956 and the first two units came online 4yrs later. Water for the plant is secured from about 8 different streams and waterways using the Valgrossina Dam. A fourth unit was in the original design, but not completed for about 40yrs. At that time, the rotors of the three existing sets were also replaced and various upgrades were made to the plant electrical systems.

Photograph courtesy of A2A SpA
Posted 8 Aug 2009

Photograph courtesy of ERG Renew
Posted 27 Jun 2010

Lovero
Location: SO
Operator: A2A SpA
Configuration: 2 X 24.5 MW Francis
Operation: 1948
T/G supplier: ??
Quick facts: Lovero is downstream from Grosio and also uses water from the Grosotto complex. One new runner has been installed and some new collection basins were installed to improve water flows.

Photograph courtesy of A2A SpA
Posted 8 Aug 2009

Nuova Canale Viola
Location: SO
Operator: A2A SpA
Configuration: 1 X 400 kW Kaplan
Operation: 2006
T/G supplier: ??
Quick facts: This new minihydro unit was built to exploit the head between the Nuovo Canala Viola and Cancano Reservoir. It is located near the Bormio ski resort at the top of the Valtellina valley formed by the Adda River.

Premadio
Location: SO
Operator: A2A SpA
Configuration: 2 X 74 MW, 1 X 78 MW Pelton
Operation: 1956-2003
T/G supplier: Riva, VA Tech, Ansaldo
Quick facts: The Premadio power station uses about 33km of tunnels and waterways basically originating from the Cancanao and S Giacomo reservoirs. A third machine was added in Dec 2003.

Prevalle Chiese
Location: BS
Operator: A2A SpA
Configuration: 2 X 900 kW, 1 X 740 kW Francis
Operation: 1922
T/G supplier: Riva, DePretto Escher Wyss, Marelli
Quick facts: The intake for this SHP is in Comune di Muscolina and water travels from the Chiese 3.4km to the powerhouse. Two overhead connections originate at the plant, one to Naviglio PS and the second towards Brescia. Annual output is about 9 GWh.

Verres
Location: AO
Operator: Compagnia Valdostana Delle Acque SpA
Configuration: 2 X 3 MVA, 1 X 2.15 MVA, 1 X 2.5 MVA Pelton
Operation: 1911
T/G supplier: ??
Quick facts: Verres is part of the Dora Baltea canal system and was originally built in 1911. The machinery was reconstructed in 1994-1999. A 2.8km canal leads to a 1.4m penstock. The horizontal Pelton turbines generate about 50,000 MWh/yr.

Photograph courtesy of GSE SpA
Posted 25 May 2009