In this work, we have demonstrated that the implemented approach enables GW/RPA calculations on complex materials relevant for catalysis and electrochemistry applications. We explored the convergence behavior of RPA total energies with respect to a number of key parameters and quantified the accuracy of the static subspace approximation in predicting RPA total energies at reduced cost. These results allowed us to make recommendations for the application of these methods to other materials calculations. The approach could be applied towards catalytic systems relevant to electrocatalysis, highlighting the relevance of GW/RPA and that further studies should be done to benchmark the effects of these beyond-DFT methods on a wide variety of important materials classes.