Batteries
Batteries Department of Energy (.gov)
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WattCycle Unveils Record-Breaking 10 kWh Balcony Solar Battery with 5 kW Bidirectional Output
Shenzhen Washi Energy Co., Ltd., operating under the WattCycle brand, has announced a new all-in-one balcony solar storage system featuring a 10 kWh capacity and 5 kW bidirectional power output. Debuting ahead of Intersolar Europe 2026, the unit aims to set a new performance benchmark for the compact plug-in residential segment, which has historically been limited to smaller storage and discharge capacities. This development allows European households to better manage energy loads and potentially arbitrage dynamic electricity tariffs through enhanced grid export capabilities.
June 21, 2026How EV batteries, from lithium ion to solid state, are evolving
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June 21, 2026Forget Solid-State: Silicon Anodes Emerge as the Near-Term Breakthrough for EV Batteries
General Motors and several battery startups are pivoting toward silicon anode technology as a more immediate solution for enhancing electric vehicle performance compared to long-term solid-state goals. By increasing the silicon content in battery anodes, manufacturers aim to significantly boost energy density and reduce charging times while decreasing reliance on graphite, which is currently dominated by Chinese processing. This shift represents a critical mid-term evolution in the energy storage sector, with production facilities already scaling up to meet automotive demand.
June 20, 2026China Leads Charge in Energy Storage Powered by Battery Progress
China has inaugurated the Xiamen Energy Storage Validation Research Institute (ESVL), a 3 billion yuan (US$444 million) facility designed to test battery-based energy-storage systems (BESS) under extreme environmental conditions. This milestone supports Beijing’s strategic goal to establish "new energy storage" as a pillar of its power grid, which is increasingly reliant on intermittent renewable sources like wind and solar. As the world’s largest testing platform, the facility aims to accelerate the commercialization of storage technologies and strengthen the global competitiveness of Chinese battery manufacturers.
June 20, 2026