Conduction matters less for reservoirs with higher flow rates, as shown in the analytical solutions in Fig. (a). It takes 30% less time for the average temperature without conduction to reach 20% temperature depletion, compared to the solution with conduction. For 500 kg/s, the same difference is only 3%. High flow rates are common in geothermal power production. For example, a recently-built geothermal project has 250 kg/s flow rates per well . Under these high-flowrates, the reservoir temperature is less sensitive to conduction, and having enough energy (related to reservoir volume) in the reservoir to last for the proposed lifetime is again worth considering.