Maximum potential for geothermal power in Germany based on engineered geothermal systems

摘要: We estimate the maximum geothermal potential in Germany available for exploitation by operated engineered systems (EGS). To this end, we assume that (a) capabilities creating sufficient permeability deep heat exchange will become future and (b) it possible to implement multiple wells reservoir extending rock volume accessible water circulation increasing yield. While these assumptions may be challenged as far too optimistic, they allow testing of EGS, given required properties, countries lacking natural steam reservoirs. With aim, model numerically thermal electric energies which delivered such solving coupled partial differential equations governing fluid flow transport a porous medium. Thus, our does not represent fractures their proper physical dimension but rather distributes small region enhanced around them. By varying parameters subsurface, rates well separations, analyze long-term performance reservoir. For estimating achievable EGS Germany, most optimistic conditions, realizing are unlikely prevail. Considering crystalline landmass accounting competing land uses, evaluate overall compare with other renewables used Germany. Under assumptions, surface emplacing would support 13,450 plants each comprising 18 delivering an average power 35.3 MW e . When at full capacity, collectively supply 4155 TWh energy 1 year roughly seven times produced 2011. study suggests major scientific, engineering, financial efforts justified developing drilling stimulation technologies permeabilities successful EGS. Then, have great contributing towards national production powered sustainable, decentralized systems.