

New Energy Storage Solutions Test Lithium-Ion’s Reign
48 snips Jul 31, 2024
Yiyi Zhou, a clean power specialist at BNEF, and Evelina Stoikou, a senior associate on BNEF's energy storage team, dive into the future of energy storage technologies. They examine the competitive landscape for long-duration storage solutions that could rival lithium-ion batteries. The discussion includes insights from their Long-Duration Energy Storage Cost Survey, highlighting innovations like sodium-sulfur and molten salt batteries. They also explore how government policies are shaping the adoption of these technologies globally, particularly in China.
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No Single Definition Or One-Size-Fits-All
- Long-duration storage lacks a single definition; BNEF uses >=6 hours while policies vary between 4–10 hours globally.
- Technologies differ by use case and duration, so many cannot be directly swapped for each other.
Costs Fall With Longer Duration
- Long-duration technologies are grouped as electrochemical, mechanical, and thermal, each with distinct storage mechanisms.
- Capital costs fall as duration increases for many LDS because energy and power components can be decoupled.
China Drives Scale And Lower Costs
- China leads deployment and cost reductions for several long-duration technologies, notably compressed air and flow batteries.
- Chinese projects scale far larger than most pilot projects elsewhere, driving local cost advantages.