BYD unveils 14.5 MWh storage system, world’s largest yet
Summary
China’s EV giant has unveiled the 14.5 MWh DC “Haohan” single-unit DC block with record-breaking capacity to challenge next-generation energy storage market.
<p class="p1"><span class="s1">China’s EV giant has unveiled the 14.5 MWh DC “Haohan” single-unit DC block with record-breaking capacity to challenge next-generation energy storage market.</span></p><p><strong>From <a href="https://www.ess-news.com/2025/09/19/byd-unveils-worlds-largest-14-5-mwh-dc-energy-storage-system/" rel="noopener" target="_blank">ESS News</a></strong></p>
<p>BYD has unveiled a new DC energy storage system with the world’s largest single-unit capacity of 14.5 MWh, intensifying competition in the fast-growing utility-scale storage market. The “Haohan” system was launched on September 18 at the International Digital Energy Expo in Shenzhen.</p>
<p>The company said Haohan’s minimum unit capacity of 14. 5MWh is more than double the industry norm of 6–7 MWh. When configured within a standard 20-foot container, the system delivers 10 MWh and achieves a volumetric energy density of 233 kWh per cubic meter, a 51% increase on the industry average. For a 1 GWh storage plant, Haohan would cut the number of required units by more than half, reduce land use by one-third, and trim cell count by 76%.</p>
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