Difference between revisions of "Storage"
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| + | https://en.wikipedia.org/wiki/Energy_storage | ||
| + | |||
==Battery== | ==Battery== | ||
| + | Pros: | ||
| + | |||
| + | * density | ||
| + | |||
| + | Cons: | ||
| + | |||
| + | * price | ||
| + | * degradation | ||
| + | Outlook: going to become cheaper | ||
| + | |||
[[:Category:Batteries]] | [[:Category:Batteries]] | ||
==Gravity Battery== | ==Gravity Battery== | ||
| − | + | Pros: | |
| − | |||
| − | |||
| + | * price per MWh stored | ||
| + | * longevity | ||
| + | |||
| + | Cons: | ||
| + | |||
| + | * density | ||
| + | |||
| + | Types: | ||
| + | *[https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity Pumped storage hydroelectricity] | ||
| + | *Solid mass: | ||
| + | **above ground | ||
| + | ***crane | ||
| + | ****[https://www.energyvault.com/ Energy Vault] - 20 MWh capacity, using cranes | ||
| + | ***up/down hill railway | ||
| + | **underground | ||
| + | ***[https://gravitricity.com/ Gravitricity] - using deep mines. Best for shafts >300m deep. Cost: 171 USD per MWh (less than 1/2 of the cost of Li-ion battery)<ref>https://gravitricity.com/technology/</ref> | ||
| + | Outlook: cost breakthrough is expected | ||
[[Category:Storage]] | [[Category:Storage]] | ||
| + | <references /> | ||
| + | |||
| + | === Long-term storage (better scalability) === | ||
| + | |||
| + | ==== Power-to-gas ==== | ||
| + | PEM - older technology, expensive | ||
| + | |||
| + | Alcaline - cheaper, more durable, more pure output gases (https://en.wikipedia.org/wiki/Alkaline_water_electrolysis) | ||
| + | |||
| + | https://en.wikipedia.org/wiki/Power-to-gas | ||
| + | |||
| + | ==== Salt battery ==== | ||
| + | https://www.pv-magazine.com/2022/04/26/long-duration-storage-solution-based-on-saltwater/ | ||
| + | |||
| + | LCOE: ? | ||
| + | |||
| + | good price, problem with longevity (not enought cycles) | ||
| + | |||
| + | ==== Compressed Gas ==== | ||
| + | https://en.wikipedia.org/wiki/Cryogenic_energy_storage | ||
| + | |||
| + | Compressed air: | ||
| + | |||
| + | https://www.pv-magazine.com/2022/04/28/uk-group-develops-liquid-air-energy-storage-tech/ | ||
| + | |||
| + | https://highviewpower.com/news_announcement/highview-power-developing-2-gwh-of-liquid-air-long-duration-energy-storage-projects-in-spain/ | ||
| + | |||
| + | LCOS (levelized cost of storage) is $0.15/kWh to $0.30/kWh | ||
| + | |||
| + | Compressed CO2: | ||
| + | |||
| + | https://energydome.com/ | ||
Latest revision as of 22:16, 30 June 2022
https://en.wikipedia.org/wiki/Energy_storage
Battery
Pros:
- density
Cons:
- price
- degradation
Outlook: going to become cheaper
Gravity Battery
Pros:
- price per MWh stored
- longevity
Cons:
- density
Types:
- Pumped storage hydroelectricity
- Solid mass:
- above ground
- crane
- Energy Vault - 20 MWh capacity, using cranes
- up/down hill railway
- crane
- underground
- Gravitricity - using deep mines. Best for shafts >300m deep. Cost: 171 USD per MWh (less than 1/2 of the cost of Li-ion battery)[1]
- above ground
Outlook: cost breakthrough is expected
Long-term storage (better scalability)
Power-to-gas
PEM - older technology, expensive
Alcaline - cheaper, more durable, more pure output gases (https://en.wikipedia.org/wiki/Alkaline_water_electrolysis)
https://en.wikipedia.org/wiki/Power-to-gas
Salt battery
https://www.pv-magazine.com/2022/04/26/long-duration-storage-solution-based-on-saltwater/
LCOE: ?
good price, problem with longevity (not enought cycles)
Compressed Gas
https://en.wikipedia.org/wiki/Cryogenic_energy_storage
Compressed air:
https://www.pv-magazine.com/2022/04/28/uk-group-develops-liquid-air-energy-storage-tech/
LCOS (levelized cost of storage) is $0.15/kWh to $0.30/kWh
Compressed CO2:
