An energy distributing system comprising: a district heating grid having a district feed conduit for an incoming flow of district heat transfer fluid having a first temperature in the range of 50-120°C, and a district return conduit for a return flow of district heat transfer fluid; a local energy distributing system comprising a local feed conduit , a local return conduit , and a plurality of local heating systems , each having an inlet connected to the local feed conduit and an outlet connected to the local return conduit , wherein each local heating system is configured to provide hot water and/or comfort heating to a building ; a central heat exchanger connected, at a primary side thereof, to the district heating grid and, at a secondary side thereof to the local energy distributing system , wherein the central heat exchanger is configured to: exchange heat from the incoming flow of district heat transfer fluid of the district feed conduit to an outgoing flow of local heat transfer fluid in the local feed conduit , and exchange heat such that the outgoing flow of local heat transfer fluid is having a temperature of 5-30°C, characterized in that the local feed conduit and the local return conduit are made from uninsulated plastic pipes and the uninsulated plastic pipes do not have an extra layer of heat insulating material wrapped around the same. a district heating grid having a district feed conduit for an incoming flow of district heat transfer fluid having a first temperature in the range of 50-120°C, and a district return conduit for a return flow of district heat transfer fluid; a local energy distributing system comprising a local feed conduit , a local return conduit , and a plurality of local heating systems , each having an inlet connected to the local feed conduit and an outlet connected to the local return conduit , wherein each local heating system is configured to provide hot water and/or comfort heating to a building ; a central heat exchanger connected, at a primary side thereof, to the district heating grid and, at a secondary side thereof to the local energy distributing system , wherein the central heat exchanger is configured to: exchange heat from the incoming flow of district heat transfer fluid of the district feed conduit to an outgoing flow of local heat transfer fluid in the local feed conduit , and exchange heat such that the outgoing flow of local heat transfer fluid is having a temperature of 5-30°C, characterized in that the local feed conduit and the local return conduit are made from uninsulated plastic pipes and the uninsulated plastic pipes do not have an extra layer of heat insulating material wrapped around the same. exchange heat from the incoming flow of district heat transfer fluid of the district feed conduit to an outgoing flow of local heat transfer fluid in the local feed conduit , and exchange heat such that the outgoing flow of local heat transfer fluid is having a temperature of 5-30°C, characterized in that the local feed conduit and the local return conduit are made from uninsulated plastic pipes and the uninsulated plastic pipes do not have an extra layer of heat insulating material wrapped around the same. <EOS>