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This is a pie chart showing the percentages of energy consumption for different applications. Starting at the top and moving clockwise the proportions are: space heating, shown in light brown, 45.2%; water heating, shown in light blue, 6.3%; catering, shown in orange, 9.8%; lighting, shown in yellow, 10%; cooling and ventilation, shown in purple, 6%; computing, shown in dark blue, 4.6%; other, shown in red, 18.2%.

 1 The importance of energy use in buildings