Explore 8+ transformative storage technologies, 25+ leading manufacturers, and 40+ products powering the transition to a renewable grid.
From vanadium flow batteries to gravity storage, understand the tradeoffs across duration, efficiency, cost, and lifespan.
| Technology | Duration | Efficiency | Cost ($/kWh) | Lifespan |
|---|---|---|---|---|
| Vanadium Flow Battery | 4-12 h | $150-$350 | 20-30 yrs | |
| Iron-Air | 10-100 h | $20-$80 | 15-25 yrs | |
| CAES | 4-72 h | $50-$150 | 30-50 yrs | |
| LAES | 6-200 h | $80-$200 | 30-40 yrs | |
| Gravity Storage | 4-24 h | $100-$250 | 30-50 yrs | |
| Thermal Storage | 6-200 h | $20-$150 | 25-40 yrs | |
| Sodium-Ion | 2-12 h | $40-$120 | 10-20 yrs | |
| Pumped Hydro | 6-24 h | $50-$200 | 50-100 yrs |
From startups to industrial giants, these companies are shaping the future of long duration energy storage.
Multi-day iron-air batteries for a reliable, renewable grid
Long-duration iron flow batteries for utility and commercial applications
Safe, sustainable, scalable zinc-based battery storage
Vanadium flow batteries for a zero-carbon future
Gravity-based long-duration energy storage
Cryogenic energy storage for long-duration grid applications
Stay informed with our comprehensive guides to LDES technology, markets, and project selection.
Long Duration Energy Storage (LDES) systems can store energy for 10+ hours to multiple days, filling the gap between lithium-ion batteries and seasonal storage. Learn how LDES works, why it matters for the energy transition, and what technologies are leading the way.
Lithium-ion batteries are great for 2-4 hour storage, but long-duration needs require different technologies. We compare LDES vs Li-ion across cost, lifespan, safety, and use cases to help you decide.