$15k for only 13 kWh is not a sustainable price point.
A high quality Victron inverter set for 3 phase is around $2500, that's not a budget option but one of the better inverter brands you can find. Add $2000 for a 16 kWh battery and you're done for less than 1/3rd of the price of the Tesla solution.
I got two Tesla Powerwall 3s partly because I thought the software would be better. Instead, they are extremely buggy and the software has poor functionality. Many of the features are broken. The product feels like a prototype. Grid charging is broken and many of the features related to it don’t do what it says in the app. The batteries regularly do calibration cycles where they dump their entire charge and then stay at 0% charge level for at least 24 hours. When I first got them about a year and a half ago they would do that about once every two weeks, although they have reduced the frequency. I’ve also had issues with them turning on their heaters when it isn’t even cold and draining themselves. You get little to no insight into their operation and need to contact technical support for any little issue. They crash and do a hard reset and shut off the power every so often as well.
Paying a tesla tax to waste extra power AND not be sure they'll be charged in the event of an outage - quite a combination! Thanks for putting this review out there - its a good counterpoint to all the hype!
I also have built my own offgrid sytems, but sodium is here now, and lithium is not competitive in any metric that counts in a static instalation especialy cost per kw/hr, and will very likely get insured to death as it will never be as safe.
My next system upgrade will be aimed at home power/heat/hot water, shop, and car charging.Possibly with the car charging bieng a discreet system that works at a higher voltage and is all DC.
Sodium I saw some reviews where it expands a lot during charging and long term safety is not as conclusive
Why do you see sodium as an easier choice?
The main fire risk with lifepo4 is the connectors, wires, bms and shut off being suitable for high amp. That would be a risk with anything if not built properly, even without batteries if you wire your house with wrong awg wires
then if you can stay under long enough, the look into electrolights, this is all uni 101 stuff, but it is very clear that lithium is dead for static applications, and lower performance mobile
other words, cost, supply chain strongly favor sodium over lithium
CATL barely started (if at all) volume production. They haven’t even published specs. Even when they ramp it up, it will be like 0.1% of total lfp output.
and in typical China fashion you can bet that actual implimentation is going to scale at a ferocious pace now that first iterations are proving competitive.....
then we could, but wont, get into other significant developments in electric power, solar, battery, etc that will be entering the market, at scale, this year
wink wink
A high quality Victron inverter set for 3 phase is around $2500, that's not a budget option but one of the better inverter brands you can find. Add $2000 for a 16 kWh battery and you're done for less than 1/3rd of the price of the Tesla solution.