Japan has built Asia’s first osmotic power plant, generating clean electricity using the natural energy released when freshwater meets saltwater. This emerging technology taps into a vast, previously unused renewable-energy source. • The plant uses special membranes to harness energy from salt concentration differences. • Osmotic power can operate 24/7, making it a reliable baseload source. • The system is especially effective at river mouths and coastal inlets. • Japan’s prototype proves the te