Finding new alternatives to current energy systems is a need to develop disruptive solutions. In this case, a complete new approach the Sodium as energy resource is described. Tradicionally, Sodium has been considered a risky element even if it were proposed as coolant in many applications, as nuclear or solar thermal plants. Such applications has been concerned by the explosive reaction of alkali as Na with water. In this communication, we analysed the altenative of profiting of such highly exothermic reaction for an energy use. Previuosly , we analised the utilization of sodium as propellant, and next steps presented in this paper shows the proposal of a sodium-water based heater to feed heating and cooling networks. A tentative configuration for the design of such heater, and the heat exchangers to adapt heated water temperatures will be presented. We present the conceptual design of a 13.5 MW district heating plant for a ΔT = 10 o C heating water from 60 to 70 o C, consuming 1 kg/s Sodium, reaching an efficiency of 95%, comparable with existing boilers..
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