When comparing the lifespan of pumped hydro storage (PHS) with that of batteries, particularly lithium-ion batteries, there are significant differences:
- Lifespan:
- Pumped Hydro Storage: Typically lasts between 50 to 100 years or more, with some systems operating effectively beyond 100 years. The Engeweiher plant in Switzerland, for example, has been operational for 116 years and is expected to continue for at least another 29 years.
- Lithium-Ion Batteries: Generally have a much shorter lifespan, typically ranging from 8 to 15 years. Their longevity can depend on factors like usage patterns and charging cycles.
- Efficiency and Cost:
- Pumped Hydro Storage: Offers high round-trip efficiency, often between 75% to 80%, making it efficient for long-duration energy storage. While the upfront costs are high, the long lifespan reduces the overall cost per kilowatt-hour over time.
- Lithium-Ion Batteries: Can achieve high efficiencies as well, sometimes exceeding 80% for certain types, but are generally more suited for short to medium duration storage. Their cost-effectiveness and lifespan are significantly shorter compared to PHS.
- Environmental Impact:
- Pumped Hydro Storage: Uses water as the storage medium, reducing environmental impact compared to chemical-based batteries. It can also support renewable energy systems by balancing supply and demand fluctuations.
- Lithium-Ion Batteries: Involves extraction of materials like lithium and cobalt, which can have environmental and social impacts during mining.
Overall, while PHS systems are more durable and cost-effective over their long lifecycle, lithium-ion batteries offer flexibility in a variety of applications due to their portability and rapid deployment capabilities.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-lifespan-of-pumped-hydro-storage-compare-to-that-of-batteries/
