There is growing need for production of green hydrogen as we intensify our efforts to reduce our dependency on fossil fuels. Water electrolysis remains however an expensive technology with a lot of research applied to development of low cost electrocatalysts. Photocatalysis could become an avenue towards green hydrogen production either via direct splitting of water or in conjunction with electrolysis (photo-assisted). Herein, we evaluate BiVO4 as photocatalyst to reduce the overpotential of oxygen evolution hence reduce the overall power requirement for water splitting. In particular, we propose a few different approaches to improve the performance of BiVO4 photoanodes, based on the use of heterostructures and co-catalysts, to better suit potential future applications. The optimization of photoanode materials, such as BiVO4, is indeed a crucial aspect toward an efficient solar-to-hydrogen conversion. On these premises, PEC water splitting can certainly be a competitive approach to sustainably produce hydrogen for next-generation energy conversion.