Just last year, Zurich International School released so much carbon dioxide gas into our atmosphere, a forest capable of absorbing the same amount would have to cover an area more than 12 times the size of Adliswil.
Clearly, that’s not ideal. Especially in Switzerland, the world’s greenest country running eleven years in a row. The Upper School in particular consumes nearly 100% of its energy through conventionally produced electricity. This goes towards heating, lights, electronics, cooking, nearly everything. And we use a lot–as much as 43 average homes. Fortunately, however, there is a solution…
Costs: for Panasonic HIT-N240 panels, each panel is 630 CHF. Each panel covers 1.28 square meters, roof area available is 4500 square meters. Number of panels needed: 3515 modules, at 630 per panel = 2.2 million CHF for +600,000 kilowatt-hours (~750,000)
Costs for little more than half the panels and roof space: 15 meters by 160 meters (2400 square meters), produces about 400,000kWh per year, 1818 panels needed at 630 CHF per panel = 1.2 million CHF for 400,000 kilowatt-hours
Costs to produce half of school energy use (200,000 kWh): 10 meters by 120 meters (1200 square meters), 906 panels needed at 630 per panel = 570,000 CHF for 200,000 kilowatt hours