Y-doped BaZrO3 has been identified as a promising potential candidate as an electrolyte materialfor proton conduction in intermediate temperature fuel cells. In the temperature range of 200-400°C it has similar conductivities as oxygen conduction materials at 700°C and shows greaterstability in a range of atmospheres compared to other proton conducting candidates. Reducingoperating temperatures will lead to viable commercialisation of these devices due to the decrease in fabrication costs and extended lifetime. This proposal seeks to study the effect of Y-doping and water doping (D2O) on the local structure of Y-doped BaZrO3 by PDF analysis derived from total neutron scattering experiments. This will result in greater understanding of the structural modifications which occur on the short range order and correlate them to the conductivity properties.