Assessment of the resource base for engineered geothermal systems in Great Britain

Geothermal Energy

Science – Society – Technology

Table 2 Available heat or heat in place, within the basement for the depth range 3.5–9.5 km

Depth slice (km)	Heat content (EJ) tabulated by temperature at depth
Depth slice (km)	150 C	200 °C	250 °C	300 °C	350 °C	400 °C	450 °C
3.5	1424	0	0	0	0	0	0
4.5	17,616	1335	0	0	0	0	0
5.5	29,526	7856	713	0	0	0	0
6.5	10,990	38,112	4257	404	0	0	0
7.5	3750	44,936	16,463	2760	214	0	0
8.5	816	28,581	43,598	7112	1636	42	0
9.5	75	6848	61,542	21,736	4038	813	6

Heat contents, in EJ, are binned as ±25 °C around the central temperature, i.e. heat contents greater than or equal to 175 °C and less than 225 °C are binned as 200 °C. The available heat in place for Great Britain is 357,197 EJ