The most striking measure is the phasing out of obsolete fluorescent lamps, such as T2, T8 and T12 (popularly known as TL tubes). Also notable is the phasing out of halogen lamps and compact fluorescent lamps (popularly known as low-energy lamps). These lighting sources must be replaced because they are not energy-efficient and because there are sufficient energy-efficient alternatives on the market. With this measure, the commission aims to save almost 42 TWh in 2030.