In the previous section we discussed the impact that both hydrogen evolution and CO2 reduction have on the local environment up to commercially-relevant current densities. This section discusses the important opposite side of the equation, how does access to surplus CO2 and the predicted local environment at higher current densities impact the reactions occurring on the surface of the catalyst. More importantly, can we use this understanding to design even better catalysts or conditions that may advance CO2 electroreduction performance further.