Geothermal heat exchanger assembly comprising: a plurality of heat exchanger screw posts (1, 1') arranged in the ground, wherein each heat exchanger threaded post comprises - a hollow cylindrical base body with a cavity and a closed end, the base body being provided on its outer side with at least one helical threaded element - a supply pipe arranged coaxially with respect to the base body and in the cavity of the base body, the supply pipe having an outside diameter and extending substantially over an entire axial length of the base body characterized in that each heat exchanger screw post additionally comprises: - a continuous insulating layer arranged coaxially between the base body and the supply pipe and having an axial bore with an inner diameter, the inner diameter of the insulating layer corresponding substantially to the outer diameter of the supply pipe, and the insulating layer extending substantially over the entire axial length of the base body; - wherein an annular gap is formed between the base body and an outer circumferential surface of the insulating layer, which annular gap is preferably divided into a plurality of channels by a plurality of axially extending ribs, and in that at least two heat exchanger screw posts (1, 1') are connected in parallel with each other to form a storage circuit, wherein the geothermal heat exchanger arrangement comprises a plurality of storage circuits (S, S'), which each consist of a plurality of heat exchanger screw posts (1, 1') connected in parallel with one another, wherein the storage circuits (S, S') are serially interconnected and arranged concentrically to each other. a plurality of heat exchanger screw posts (1, 1') arranged in the ground, wherein each heat exchanger threaded post comprises - a hollow cylindrical base body with a cavity and a closed end, the base body being provided on its outer side with at least one helical threaded element - a supply pipe arranged coaxially with respect to the base body and in the cavity of the base body, the supply pipe having an outside diameter and extending substantially over an entire axial length of the base body characterized in that - a hollow cylindrical base body with a cavity and a closed end, the base body being provided on its outer side with at least one helical threaded element - a supply pipe arranged coaxially with respect to the base body and in the cavity of the base body, the supply pipe having an outside diameter and extending substantially over an entire axial length of the base body each heat exchanger screw post additionally comprises: - a continuous insulating layer arranged coaxially between the base body and the supply pipe and having an axial bore with an inner diameter, the inner diameter of the insulating layer corresponding substantially to the outer diameter of the supply pipe, and the insulating layer extending substantially over the entire axial length of the base body; - wherein an annular gap is formed between the base body and an outer circumferential surface of the insulating layer, which annular gap is preferably divided into a plurality of channels by a plurality of axially extending ribs, and in that - a continuous insulating layer arranged coaxially between the base body and the supply pipe and having an axial bore with an inner diameter, the inner diameter of the insulating layer corresponding substantially to the outer diameter of the supply pipe, and the insulating layer extending substantially over the entire axial length of the base body; - wherein an annular gap is formed between the base body and an outer circumferential surface of the insulating layer, which annular gap is preferably divided into a plurality of channels by a plurality of axially extending ribs, at least two heat exchanger screw posts (1, 1') are connected in parallel with each other to form a storage circuit, wherein the geothermal heat exchanger arrangement comprises a plurality of storage circuits (S, S'), which each consist of a plurality of heat exchanger screw posts (1, 1') connected in parallel with one another, wherein the storage circuits (S, S') are serially interconnected and arranged concentrically to each other.