As the temperature of a reservoir reduces, so does power generation. Therefore, understanding the reservoir temperature as a function of time offers insights for power generation as a function of time and reservoir lifetime. Fig. shows the non-dimensional reservoir temperature versus time for both the analytical and numerical solutions, which are calculated, respectively, from Equation 31 and in a post-processing step from the numerical solution. The solutions that neglect conduction (dotted lines in Fig. ) are calculated from Equation . Subplot (a) uses the logarithm of time to illustrate late-time behavior, while (b) uses a linear scale to emphasize the shape of the curves at early times and the (un)importance of heat conduction to the reservoir temperature.