On the west coast of Denmark lies Esbjerg. Defined by its fishing harbor and later as an offshore oil and gas hub, it is deeply connected to the sea. But today, this small coastal town is preparing to host +2-Gigawatt water electrolysis.

The PtX sector is poised for explosive growth on a global scale, as it is a key driver of political agendas to scale renewable capacity. While the market has seen recent turbulence, projects in Esbjerg are moving from blueprint to reality.

A key aspect of water electrolysis is Pure Water (PW) and Ultrapure Water (UPW).

This facility is pioneering a highly efficient approach: producing PW at over 85% efficiency using treated municipal wastewater rather than tapping into scarce freshwater reserves, which are already in demand in the populated and centralized area of Esbjerg.

This process separates contaminants from wastewater, resulting in a highly concentrated rejection stream. Strict local and national environmental regulations require a Reject Water Treatment (RWT) to prevent ecological damage from the concentrated reject stream. Dedicated RWT technologies for PW facilities remain limited worldwide. Our presentation will talk about how to engineer an RWT system capable of safely removing complex contaminants - such as nitrogen, arsenic, phosphate, and PFAS.

Solving the chemistry and engineering is only half the battle. Delivering this project means aligning a massive ecosystem of stakeholders, each with their own priorities.

In this presentation, we will explore both topics: the technical architecture required to build a 2 GW PtX facility, and the strategic roadmap for navigating the stakeholders.