The MTG constellation will consist of four satellites with imaging cameras (MTG-I) and two satellites with sounding instruments (MTG-S). The MTG-I is equipped with the Flexible Combined Imager (FCI), a further development of the SEVIRI instrument. FCI has 16 spectral channels (SEVIRI has 12 channels), the spatial resolution in the infrared range is 2 km, in the visible range even 1 km (most SEVIRI channels have a resolution of 3 km). The first MTG-I satellite will take an image of the visible disk of the Earth every 10 minutes. A second MTG-I satellite will take a picture of the upper quarter every 2.5 minutes. This satellite will record four channels with double the spatial resolution, which will allow fast developing thunderstorms to be measured with high precision. MTG-I also has a new type of instrument on board, the Lighting Imager (LI), which for the first time can be used to record lightning activity over Europe from space. The MTG-S sounding mission has two spectrometers on board. The Infrared Spectrometer (IRS) measures temperature and humidity profiles, while the UVN spectrometer is designed to observe air quality and the chemical composition of the atmosphere.