The analytical solution could be used in at least two ways. Firstly, it can be interpreted as the average reservoir temperature. Under this approach, it provides a lower-bound on the reservoir temperature at all times due to its assumed constant rate of heat removal, as discussed earlier in this section. Secondly, the analytical solution could be interpreted as the temperature used for power production. Under this interpretation, the analytical solution is conservative at early times because it predicts a temperature lower than the production temperature from the numerical solution. The analytical solution is a computationally-cheap, lower-bound.