• World’s largest pumped hydro storage construction makes major progress in China Together with a conventional hydropower unit at the Lianghekou Dam, the facility capacity will reach 4.2 GW. • The world’s largest hybrid pumped hydro storage facility, being built at the Lianghekou Dam in China, has reached a major construction milestone. • Excavation for the project’s ‘power heart’ has been completed, while downstream reservoir construction has also begun, a media report said. • As the supply of renewable energy from wind and solar power plants increases, countries are also working to develop efficient energy storage solutions to store excess power generated by these facilities when demand is low. • Lithium-ion batteries have high energy density but are expensive to scale, prompting the use of innovative solutions. • Interesting Engineering has previously reported how commonly available materials like sand are being used to store heat.
Article Summaries:
- China’s Lianghekou Dam is advancing the world’s largest hybrid pumped‑hydro storage project, a key step in expanding renewable‑energy capacity. The facility will combine a 3,000‑MW conventional hydropower plant with four 300‑MW pumped‑storage units, totaling 4.2 GW. Construction milestones include the completion of excavation for the underground “power heart” and the start of concrete pouring for the lower reservoir. Once finished, the system will store excess wind and solar power on the Western Sichuan plateau, providing grid‑balancing and year‑round generation through reversible water‑turbine operations.
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