A local thermal energy consumer assembly, arranged to be connected to a thermal energy circuit comprising a hot conduit configured to allow heat transfer liquid of a first temperature to flow therethrough, and a cold conduit configured to allow heat transfer liquid of a second temperature to flow therethrough, the second temperature is lower than the first temperature, the local thermal energy consumer assembly comprising: a consumer assembly pressure difference determining device adapted to determine a consumer assembly local pressure difference, Δp1, of the thermal energy circuit; a thermal energy consumer heat exchanger; and a flow controller, wherein the thermal energy consumer heat exchanger is arranged to be connected to the hot conduit via the flow controller, wherein the thermal energy consumer heat exchanger is further arranged to be connected to the cold conduit for allowing return of heat transfer liquid from the thermal energy consumer heat exchanger to the cold conduit, and wherein the thermal energy consumer heat exchanger is arranged to transfer thermal energy from heat transfer liquid to surroundings of the thermal energy consumer heat exchanger, such that heat transfer liquid returned to the cold conduit has a temperature lower than the first temperature and preferably a temperature equal to the second temperature characterized in that the flow controller comprises a mode controller configured to, based on Δp1, selectively set the flow controller in a pumping mode or in a flowing mode, wherein upon set in the pumping mode the flow controller is configured to act as a pump for pumping heat transfer liquid from the hot conduit into the thermal energy consumer heat exchanger, and wherein upon set in flowing mode the flow controller is configured to act as a flow regulator for allowing heat transfer liquid from the hot conduit to flow into the thermal energy consumer heat exchanger. a consumer assembly pressure difference determining device adapted to determine a consumer assembly local pressure difference, Δp1, of the thermal energy circuit; a thermal energy consumer heat exchanger; and a flow controller, wherein the thermal energy consumer heat exchanger is arranged to be connected to the hot conduit via the flow controller, wherein the thermal energy consumer heat exchanger is further arranged to be connected to the cold conduit for allowing return of heat transfer liquid from the thermal energy consumer heat exchanger to the cold conduit, and wherein the thermal energy consumer heat exchanger is arranged to transfer thermal energy from heat transfer liquid to surroundings of the thermal energy consumer heat exchanger, such that heat transfer liquid returned to the cold conduit has a temperature lower than the first temperature and preferably a temperature equal to the second temperature characterized in that the flow controller comprises a mode controller configured to, based on Δp1, selectively set the flow controller in a pumping mode or in a flowing mode, wherein upon set in the pumping mode the flow controller is configured to act as a pump for pumping heat transfer liquid from the hot conduit into the thermal energy consumer heat exchanger, and wherein upon set in flowing mode the flow controller is configured to act as a flow regulator for allowing heat transfer liquid from the hot conduit to flow into the thermal energy consumer heat exchanger.