Currently, there is a shortage of fossil resources in the World, while the problem of climate change is worsening. In this regard, the relevance of obtaining biofuels from organic waste will be improved. In the Kaliningrad region, as in many urbanized territories, there is a problem of finding ways to dispose of excess sludge. The composition of excess activated sludge has been studied and the possibility of obtaining biofuels from sludge by hydrothermal liquefaction has been assessed. Based on the analysis of fuel characteristics and chemical composition of excess sludge, it was found: caloric value 7.6-8.8 J/g a.d.m.; lipid content 2.0- 5.2% d.m, protein content 16.6-43.9%, ash content 29.3-44.4%, content heteroatoms in the sludge up to 30% in total. during the HTL experiment of excess sludge, it was found that the time optimum of the process lies in the range of 30-40 minutes. Increase in yield of HTL biooil when using acetone averaged was 78.8%, when using alcohol 74.5%.