Last year, Netherlands residents spent 11.3 billion euros on making their homes more sustainable, about 30 percent more than the year before. More is needed, the Dutch Sustainable Energy Association (NVDE) said. According to market research agency Multiscope, households want to save on energy costs, especially those living in homes with low energy labels. Gas and electricity prices, among other things, have risen sharply since the summer of 2021, partly due to the war in Ukraine.