Survey on Households and the Environment Percentage of dwellings with thermal insulation or energy-saving lights, by net monthly household income and type of insulation or lighting Units: % over the total number of dwellings With some type of thermal insulation Canopies Persian blinds or shutters Tinted glass or solar protectors Double glazing for windows Thermal bridge breaking With some type of energy-saving lights Fluorescent tubes or lights Other energy-saving lightbulbs TOTAL 96.2 23.0 94.0 4.1 39.3 11.4 85.5 66.1 67.1 Less than 1,100 Euros 93.5 16.9 91.7 2.7 22.7 5.2 75.4 60.4 48.8 From 1,101 to 1.800 euros 96.5 21.8 94.4 4.3 40.9 10.5 87.7 67.6 70.4 From 1,801 to 2,700 euros 97.5 26.2 95.4 5.9 52.0 17.8 91.6 70.3 76.5 More than 2,700 euros 98.7 31.0 96.6 5.7 61.7 23.3 93.3 67.8 84.9 Does not know/ Does not answer 96.6 25.4 94.1 3.6 38.3 10.5 86.6 67.0 69.4 Notes: Source: National Statistics Institute