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A 1 MWh battery isn't actually that big. There's electric trucks on the market right now with 600 kWh batteries sitting on the frame between the front and rear
by disentanglement 1y ago
A 1 MWh battery isn't actually that big. There's electric trucks on the market right now with 600 kWh batteries sitting on the frame between the front and rear axle. That would easily fit into a basement room.
- deleted 1y ago[deleted]
- lelandbatey 1y agoA good size comparison might by approximately the size of a stand up freezer, a common basement sight.
- ragebol 1y agoThat small? I was imagining burying a shipping container under the driveway/front yard or something.
- ok_dad 1y agoMost grid-scale batteries that large will have bigger inverters (usually it'll be inverters that can dump that energy in 2-6 hours so 500-150 KW for 1 MWh of battery) and require cooling systems and such, but if you're putting that in your home then cooling will be negligible and the inverter will remain small. The batteries themselves are fairly compact, it's the support systems that get large.
- codyb 1y agoWhat's the degradation cycle on batteries that size? If you're using daily, do you get... three? five years? Looks like - https://cartroubleshooters.com/how-long-does-a-tesla-home-battery-last/ https://cartroubleshooters.com/how-long-does-a-tesla-home-ba... - ten to fifteen years with a guarantee of 10 years at 70% from Tesla
- privatelypublic 1y agoWe're to the point calendar aging instead of cycles is the existential threat.
- Dylan16807 1y agoWe can roughly estimate lithium ion batteries as 500 watt-hours per liter. Which makes a million watt-hours 2000 liters, which is two cubic meters. Add in extra overhead and it's still not all that much.
- driverdan 1y agoShipping containers should never be buried. They are not designed to tolerate forces pushing in on the sides and can collapse.
- ok_dad 1y agoI wouldn't want a battery in my basement. if there is a fire in the battery your house will turn into a smoking hole, in the literal sense. Maybe if it was an iron-air battery or something safe, but not the current generation chemistry batteries.
- disentanglement 1y agoYeah, I'm not saying it's a good idea. But you could do it if you wanted to.
- lukan 1y ago" but not the current generation chemistry batteries." Check for "Saltwaterbatteries", they are starting to reach consumer markets and literally cannot burn as the energy is stored as ... salt water.
- XorNot 1y agoSeems like the peak was around 2017 but they never performed particularly well?[1] The problem is if the promise from the name was true, they'd be everywhere - they're not, so invariably much like vanadiun-redox or iron-flow batteries it turns out all the other details make them more expensive and less performant. [1] https://en.m.wikipedia.org/wiki/Aquion_Energy https://en.m.wikipedia.org/wiki/Aquion_Energy
- lukan 1y ago" if the promise from the name was true, they'd be everywhere" Not necessarily. Lithium is still quite cheap, safety is not the number one demand - and it is mainly about optimizing production to achieve competive pricing. So yes, mabye there are some blocking details I am not aware of, but otherwise I expect their time will come.
- adrianN 1y agoLFP should be about as safe as other stuff people tend to store in their basements.
- deleted 1y ago[deleted]