◥ Pressure-Retarded Osmosis (PRO): Freshwater migrates through a semi-permeable membrane to the saline (or high-concentration solution) side, increasing the pressure on that side. This pressure is used to drive turbines or similar devices to generate electricity.
◥ Reverse Electrodialysis (RED): An ion flow is generated between brine and freshwater through a specialized cation/anion exchange membrane, and this ion flow is converted into an electric current.

● Continuous and Stable Output: Unlike wind/solar power, which is affected by climate, the freshwater and brine mixture can operate stably around the clock.

◥ Estudies and areas rich in seawater-freshwater mixtures.

◥ Next to seawater desalination plants and high-salinity wastewater treatment facilities—utilizing salinity gradients as a "source of utilization."

◥ Complementing other renewable energy sources to provide a stable "baseload" output to the grid.

Infiltration energy systems represent a new "blue" renewable energy route. With its characteristics of "stability, sustainability, and wide distribution," it has the potential to become an important technology to supplement solar/wind energy. However, to achieve large-scale commercialization, breakthroughs are still needed in membrane materials, system efficiency, cost control, and environmental adaptability. The current power generation project in Fukuoka, Japan, marks the transition of this technology from theory and experiment to practical application, and deserves continued attention from the industry.