MONTREAL — A new study is showing that a green roof in Montreal has dramatically cut heating and air conditioning costs in a 100-year-old building, according to The Gazette.
The study found that the need to air condition was cut by 91 percent, while the energy demand for heating dropped by nearly 28 percent, the article stated.
According to the article, a green roof could save a building nearly $3,000 in heating and air conditioning costs over a period of 10 years.
The Montreal Urban Ecology Centre built the green roof in 2005 to compare its performance to a conventional roof, the article noted.
The city is looking at implementing sustainable technologies such as green roofs in all 19 boroughs, the article added.
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