 Low-carbon hydrogen could play an important role in achieving a net zero-carbon economy, as it can help reduce emissions in hard-to-abate sectors such as transportation and industry. In order to ensure that low-carbon hydrogen production does not lead to increased emissions, the US government recently introduced an escalating production tax credit, PTC. This tax credit provides financial incentives for producers of hydrogen that meets increasingly stringent embodied emissions thresholds. However, the PTC could be improved by requiring producers to source all of their electricity from renewable sources, or by imposing additional clean energy procurement requirements. If these requirements are met, then the PTC can effectively reduce emissions associated with hydrogen production. Otherwise, emissions will remain higher than those of conventional, fossil-based hydrogen production pathways. This article was authored by Wilson Ricks, Chinyushu, and Jesse D. Jenkins.