Energy storage: Difference between revisions
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==How much would be needed?== | ==How much would be needed?== | ||
===Vehicles=== | |||
{{dp | {{dp | ||
|ev.battery | |ev.battery | ||
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|vehicle_energy_storage_needed | |vehicle_energy_storage_needed | ||
}} | }} | ||
^ This could be reduced by [[walkability]] and [[public transit]] (specifically | ^ This could be reduced by [[walkability]] and [[public transit]] (specifically [[trains]]). | ||
===Other=== | |||
{{dp | {{dp | ||
|other_energy.tfc | |other_energy.tfc | ||
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|other_energy.tfc * timescale | |other_energy.tfc * timescale | ||
|terajoules | |terajoules | ||
| | |other_energy_storage_needed | ||
}} | }} | ||
^ This could be reduced by alternative heating/cooling systems for homes/buildings. | ^ This could be reduced by alternative heating/cooling systems for homes/buildings. | ||
There are more options for this type of energy storage, because it's stationary (not moving in a vehicle). | |||
===Per capita=== | |||
How much storage is this really? Most people aren't familiar with terajoules. Let's express it instead in terms of "gallons of gasoline equivalent energy" per person. | |||
{{dp | {{dp | ||
|world.population | |world.population | ||
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}} | }} | ||
{{calc | {{calc | ||
|( | |(other_energy_storage_needed + vehicle_energy_storage_needed) / world.population | ||
|gallons gasoline per capita | |gallons gasoline per capita | ||
}} | }} | ||
Revision as of 00:13, 24 October 2022
In the pursuit of green energy, storage is needed for 2 reasons:
- To smooth out the intermittency of solar and wind power.
- To store energy in electric vehicles without gasoline or diesel.
How much would be needed?
Vehicles
ev.battery
65.2 kWh
Energy capacity of the average electric vehicle battery
Useable battery capacity of full electric vehicles
https://ev-database.org/cheatsheet/useable-battery-capacity-electric-car
https://ev-database.org/cheatsheet/useable-battery-capacity-electric-car
world.cars
1.446 billion
How Many Cars Are There In The World in 2022?
https://hedgescompany.com/blog/2021/06/how-many-cars-are-there-in-the-world/
https://hedgescompany.com/blog/2021/06/how-many-cars-are-there-in-the-world/
commercial_factor
2
Without this, we'd be calculating for just personal vehicles. But we also need to factor in commercial vehicles such as buses and trucks. These vary widely in size, and data is hard to find, so for simplicity sake, we just assume that they'd add up to about the same as personal vehicles - thus doubling total energy storage needed. This assumption is based on the fact that freight trucks are a somewhat smaller share of energy demand than passenger vehicles, but the trucks probably need a longer range.
(calculation loading) ^ This could be reduced by walkability and public transit (specifically trains).
Other
other_energy.tfc
3290.73 Mtoe/year
Global energy usage, total final consumption minus transport and industrial
Source: Key World Energy Statistics 2020 (IEA report)
We subtract transport because it was already dealt with above. We subtract industrial because - in principle, most factories/industry could just run during peak sunlight/wind, needing negligable energy storage.
We subtract transport because it was already dealt with above. We subtract industrial because - in principle, most factories/industry could just run during peak sunlight/wind, needing negligable energy storage.
timescale
24 hours
How big the "buffer" of energy storage would have to be to be resiliant against weather fluctuations
The exact number could be up for debate. Join the discussion.
(calculation loading) ^ This could be reduced by alternative heating/cooling systems for homes/buildings.
There are more options for this type of energy storage, because it's stationary (not moving in a vehicle).
Per capita
How much storage is this really? Most people aren't familiar with terajoules. Let's express it instead in terms of "gallons of gasoline equivalent energy" per person.
world.population
7.95 billion
(calculation loading)
This much energy has to be stored in some other way (not gasoline).