Tronzano Lago Maggiore

The Roncovalgrande Hydroelectric Plant, also known as the Delio Hydroelectric Plant, is located 3 kilometres (1.9 mi) north of Maccagno in the Province of Varese, Lombardy, Italy. Using the pumped-storage hydroelectric method, the power plant has an installed capacity of 1,016 megawatts (1,362,000 hp). The power plant was complete in 1971 and the last generator operational in 1973. During construction, the upper reservoir, Lago Delio, was expanded in capacity with two gravity dams; a northern and southern, 28.5 metres (94 ft) and 36 metres (118 ft) in height, respectively. The lower reservoir, Lago Maggiore, already existed. The power plant itself is located underground in between Delio and Maggiore. To produce electricity, water is released from the upper reservoir to the power plant via two 1,100 metres (3,600 ft) long penstocks. At the power plant, eight four-stage Pelton turbine-generators generate electricity. Power generation occurs during periods of high energy demand and when energy demand is low, pumping usually occurs. The pumps are on the same shaft as the Pelton turbines and send water from the lower to the upper reservoir to serve as stored energy. Later on, this water will be sent back down to the power station and the process will repeat. The difference in elevation between the upper and lower reservoirs affords a hydraulic head of 736.25 m (2,416 ft) and Lago Delio has a usable storage capacity of 10,000,000 cubic metres (8,100 acre⋅ft).

Pino-Tronzano railway station (Italian: Stazione di Pino-Tronzano) is a railway station in the comune of Maccagno con Pino e Veddasca, in the Italian region of Lombardy. It is an intermediate stop on the standard gauge Cadenazzo–Luino line of Rete Ferroviaria Italiana and is final station south of the border between Switzerland and Italy.

Pino sulla Sponda del Lago Maggiore is a former municipality of Italy, now frazione of the municipality of Maccagno con Pino e Veddasca in the Province of Varese. It held the status of comune until 2014 when it was merged with Maccagno and Veddasca to form the new municipality. It lies about located about 110 km northwest of Milan and about 70 km northwest of Varese, on the border with Switzerland. Until its suppression, Pino sulla Sponda del Lago Maggiore held along with San Valentino in Abruzzo Citeriore, the record of Italian comune with the longest name (30 letters).

Delio Lake is a lake in the Province of Varese, Lombardy, Italy. At an elevation of 930 m, its surface area is about 30 ha (74 acres). It serves as the upper reservoir for the pumped-storage Roncovalgrande Hydroelectric Plant.

Lake Maggiore (UK: , US: ; Italian: Lago Maggiore Italian pronunciation: [ˈlaːɡo madˈdʒoːre]; Western Lombard: Lagh Maggior; Piedmontese: Lagh Magior; literally 'greater lake') or Verbano (pronounced [verˈbaːno]; Latin: Lacus Verbanus) is a large lake located on the south side of the Alps. It is the second largest lake in Italy and the largest in southern Switzerland. The lake and its shoreline are divided between the Italian regions of Piedmont and Lombardy and the Swiss canton of Ticino. Located halfway between Lake Orta and Lake Lugano, Lake Maggiore extends for about 64 kilometres (40 miles) between Locarno and Arona. The climate is mild in both summer and winter, producing Mediterranean vegetation, with many gardens growing rare and exotic plants. Well-known gardens include those of the Borromean and Brissago Islands, that of the Villa Taranto in Verbania, and the Alpinia Botanical Garden above Stresa. Lake Maggiore is drained by the river Ticino, a main tributary of the Po. Its basin also collects the waters of several large lakes, notably Lake Lugano (through the Tresa), Lake Orta (through the Toce) and Lake Varese (through the Bardello).

Maccagno con Pino e Veddasca (Ticinese: Macagn cont Pin e Vedasca) is a comune in the province of Varese, in Lombardy, Italy, that was formed on 25 May 2014 from fusion of the communes of Maccagno, Pino sulla Sponda del Lago Maggiore and Veddasca. A referendum to create this comune was held on 1 December 2013. The referendum was passed with 77% yes and 33% no votes. Maccagno con Pino e Veddasca borders the following municipalities: Brissago (Switzerland), Cannobio (VB), Curiglia con Monteviasco, Dumenza, Gambarogno (Switzerland), Luino, Ronco sopra Ascona (Switzerland), Tronzano Lago Maggiore. Its neighborhood of Maccagno Imperiale is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").

Maccagno was a comune (municipality) of 2,000 inhabitants located in the province of Varese in the Italian region Lombardy, located in the Val Veddasca about 70 km northwest of Milan and about 25 km northwest of Varese. On 1 January 2014 the municipalities of Maccagno, Pino sulla Sponda del Lago Maggiore and Veddasca merged into the municipality of Maccagno con Pino e Veddasca.

Caviano is a former municipality in the district of Locarno in the canton of Ticino in Switzerland. On 25 April 2010, the former municipalities of Caviano, Contone, Gerra Gambarogno, Indemini, Magadino, Piazzogna, San Nazzaro, Sant'Abbondio and Vira Gambarogno merged in the new municipality of Gambarogno.

Gambarogno is a municipality in the district of Locarno in the canton of Ticino in Switzerland. It was created on 25 April 2010 through the merger of the municipalities of Caviano, Contone, Gerra, Indemini, Magadino, Piazzogna, San Nazzaro, Sant'Abbondio and Vira.Gambarogno borders the following municipalities: Alto Malcantone, Ascona, Curiglia con Monteviasco (IT-VA), Locarno, Minusio, Monteceneri, Tenero-Contra, Maccagno con Pino e Veddasca (IT-VA).

The Cannobino is a little river or stream located in the province of Verbano Cusio Ossola in the region of Piedmont in the north of Italy, which by the local population often is simply called 'Il Fiume' (the river).

Maccagno railway station (Italian: Stazione di Maccagno) is a railway station in the comune of Maccagno con Pino e Veddasca, in the Italian region of Lombardy. It is an intermediate stop on the standard gauge Cadenazzo–Luino line of Rete Ferroviaria Italiana.

The Giona is a ‘torrent’, or intermittent stream, which rises on the slopes of Monte Tamaro, in the Swiss canton of Ticino. After about 2 kilometres (1.2 mi), it enters the Italian province of Varese, forming the Val Veddasca before entering Lake Maggiore at Maccagno. Its course passes through the communes of Indemini in Switzerland and Veddasca, Curiglia con Monteviasco, Dumenza and Maccagno in Italy. The fish found in the river are predominantly Salmonidae, Cyprinidae and Cottidae, in particular brown trout, grayling, chub, vairone and European bullhead.The river is put to use as a source of hydropower.