Red oxide flow batteries

[genicide]

What do you guys think about red oxide or vanadium flow batteries for solar thinking of importing some of them, aparently their DOD is 100% everyday for 20 years and that a 5kw battery bank will give you 30kwh

 

[desiganp]

What do you guys think about red oxide or vanadium flow batteries for solar thinking of importing some of them, aparently their DOD is 100% everyday for 20 years and that a 5kw battery bank will give you 30kwh

I think you mean REDOX (reduction oxidation) Flow Battery but I doubt you could buy them commercially yet...who are you importing them from?

 

[Arthur]

No pun intended, but "On the negative side, flow batteries are rather complicated in comparison with standard batteries as they may require pumps, sensors, control units and secondary containment vessels. The energy densities vary considerably but are, in general, rather low compared to portable batteries, such as the Li-ion" and "The common problem limiting the use of most flow battery chemistries in this application is their low areal power (operating current density) which translates into a high cost of power."

 

[oober]

I think their efficiency is also quite low, something like 70%.

 

[shogun]

Have been watching these guys (http://www.aquionenergy.com) for a long time. Have been waiting for them to launch commercially for us home users.

... and then came Tesla PowerWall... and now I want a few PowerWall units instead.

 

[mmacleod]

I think their efficiency is also quite low, something like 70%.

Of course this alone doesn't mean they suck, I mean if I could get batteries that last almost forever at 1/10th the price of lead acid (Just a made up example not actual numbers) then I'd happily take a 20% efficiency hit - Could more than make that up by spending the extra money on more panels or wind turbines and end up with an overall better system still.

thinking of importing some of them

Did you get a price?

 

[shogun]

This is actually an interesting article. Hadn't seen it until now:

http://cleantechnica.com/2015/05/09...me-prices-vs-aquion-energy-eos-energy-imergy/

 

[genicide]

Its imergy vanaduin redox batteries and the have 5kw units that gives you 30kwh at 100% DOD and 20 year guarantee, but they are expensive something like 200k, if I import its most probably going to be around 120k

 

[oober]

Its imergy vanaduin redox batteries and the have 5kw units that gives you 30kwh at 100% DOD and 20 year guarantee, but they are expensive something like 200k, if I import its most probably going to be around 120k

Yea saw those. They are fridge sized. 120k is not bad for 30kwh storage(if you end up paying so little), although you will need to buy extra panels to make up for the efficiency. One question I have is the lifetime of these systems, they give a 10 year warranty for the product but it might be possible to extend this.

The next year or two will hopefully bring about some exiting changes in storage.