Unlimited Low-Cost Energy Storage
The International Solar Energy Society (ISES) highlights the potential of pumped-hydro energy storage combined with PV power generation to provide 24/7 power to data centers.
Pumped Hydro Energy Storage (PHES) offers a mature and low-cost solution, making up 95% of global energy storage, with 820,000 sites worldwide and a combined storage of 86 million GWh.
PHES and batteries complement each other, with batteries handling short-term high-power storage and PHES covering longer-term storage needs, including overnight, days, or seasons.
High-quality PHES provides energy storage at a significantly lower capital cost (US$8-40) and longer lifetime (150 years) compared to batteries.
Premium quality PHES provides energy storage in the size range 5-5000 GWh at a capital cost that is 5-10X lower than batteries.
Author's summary: PHES offers a low-cost energy storage solution.
- Combined storage: 86 million GWh
- Number of PHES sites: 820,000
- Capital cost: US$8-40
- Lifetime: 150 years
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