Due to the high ridge to the south, the town remains shadowed for 83 days per year, between November and January. A giant mirror was set up in November 2006 with controlled orientation above the mountainside, consisting of 14 sheets of steel which together are 8 metres (26 ft) wide and 5 metres (16 ft) high. The mirror functions as a heliostat, tracking the Sun so that sunlight always reflects onto the town square.[1][2] The mirror cost €100,000, or approximately €540 per resident.[1]
The town was featured in a 2009 Italian/Canadian film called Lo Specchio (The Mirror).
According to a former mayor: "The idea behind the project doesn't have a scientific basis, but a human one. It comes from a desire to let people socialise in winter when the town shuts down due to the cold and the dark."[3]
See also
Rjukan, a town in Norway also uses mirrors to illuminate the town.