---
title: Nuclear-Powered Seawater Desalination
type: technology
url: "https://www.envisioning.com/research/substrate/china__nuclear-seawater-desalination"
hub: substrate
summary: "China's coastal nuclear plants on Hainan are integrating seawater desalination with power generation — coupling waste heat from reactors to produce fresh water for island and military applications."
---

# Nuclear-Powered Seawater Desalination

China's coastal nuclear plants on Hainan are integrating seawater desalination with power generation — coupling waste heat from reactors to produce fresh water for island and military applications.
- Technology Readiness Level: 7/9
- Impact: 3/5
- Investment: 3/5
China's coastal nuclear power plants are being designed and retrofitted to couple electricity generation with seawater desalination. The Changjiang Nuclear Power Plant on Hainan — which also hosts the Linglong One SMR — can supply electricity, district heating, and desalinated seawater from the same facility. The IAEA praised CNNC's multi-purpose nuclear technology approach during a visit in April 2025.

Nuclear desalination uses waste heat from the reactor's cooling cycle to power thermal desalination processes (multi-stage flash or multi-effect distillation), or electricity from the reactor to run reverse osmosis membranes. The advantage is baseload reliability: unlike solar-powered desalination, nuclear-powered systems produce fresh water 24/7 regardless of weather. This is critical for island territories and military installations where water security is a strategic priority.

China's island-building program in the South China Sea creates demand for exactly this technology — reliable fresh water production at remote locations without dependence on supply chains. The Qingdao Baifa facility is also integrating AI-driven optimization with desalination, cutting operational costs by 15%. China's national desalination capacity has grown rapidly, with the government targeting significant expansion as northern China faces increasing water stress from climate change and industrial demand.

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Source: Envisioning — Technology Research Institute (https://www.envisioning.com/research/substrate/china__nuclear-seawater-desalination)