Аннотация:The ecosystem services that can be obtained from the oceans and seas are very diverse, one of the sources of energy is wind power. The Caspian Sea is characterized by a fragile ecosystem which is under serious anthropogenic stress, which includes oil and gas production and transportation. Namely rich oil and gas resources in the region make renewables less important for the Caspian Sea Region. Depletion of hydrocarbon resources, a rise of their price on the international markets, geopolitical tensions, a decrease of the Caspian Sea level, regional climate change and other factors make exploring offshore wind energy production timely. In order to model the offshore wind energy of the Caspian Sea, data from the ERA-Interim atmospheric reanalysis was used from 1980 to 2015 combined with QuikSCAT and RapidSCAT remote sensing data. The modeling results showed a wind power density of 173 W/m2 as an average value for the Caspian Sea. For the 1980-2015 period 57% of the Caspian Sea area shows a decreasing trend in wind power density with a total insignificant drop of 16.85 W/m2. The highest negative rate of change is observed in the Northern Caspian, which seems to be more influenced by regional climate change. The Caspian Sea regions with the highest potential for offshore wind energy production were identified and discussed.