The European Space Agency (ESA) has given the green light for the realization of the Dutch TANGO satellites with ISISPACE as the prime contractor. TANGO (Twin Anthropogenic Greenhouse gas Observers) comprises two satellites flying in tandem. It will be a unique European measurement system that will determine methane, carbon dioxide and nitrogen dioxide emissions for individual industrial plants. Furthermore, it measures greenhouse gas emissions at source level from power plants, coal mines, landfills and factories, among others