The International Renewable Energy Agency (IRENA) publishes estimations of global employment linked to the installation, usage, and manufacturing of renewable energy as part of its annual report "Renewable Energy and Jobs - Annual Review". Since 2016 GWS supports this study by contributing evaluations of employment linked to hydro power. Based on internationally established approaches, global employment from small and large hydro power is being calculated, differentiating individual parts of the value chain as well as individual countries.