BERLIN: Streaming content such as movies or music is part of everyday life now. The process uses energy - not enough to show up on your electricity bill, but if you want to be more sustainable and save a few cents, there are simple ways to reduce energy consumption.

If you don't click quickly enough, the next video will automatically start playing on YouTube or Netflix. To avoid constantly downloading data in this way you should turn off the autoplay function.

Another tip is to reduce the image quality. "The higher the image quality, the greater the data consumption," says Philip Heldt from a German consumer advice centre.