Redt Energy Share Discussion Threads

[dlg3] 25/10/2017 10:20

looks like the MM,s need your shares who would be so kind as to sell them some !!!!

[alchemy] 25/10/2017 09:43

Great explanation for us tenderfoots there Pierre. Thanks.

[pierre oreilly] 25/10/2017 09:35

Over speccing not overspending, although that applies too!

[pierre oreilly] 25/10/2017 09:33

The overspending which dig is on about comes back to the basics of energy and power. Basically, lithium is a high power low energy device. So if you spec for energy, say you want 100kWh of storage, then with lithium, you'll get say 1MW of potential power. You may only need a max power of 50kW, so the power potential is wasted.If you want that system with a hybrid, then you have say 95kWh of cheap and reliable flow storage which can deliver say 10kW, plus a lithium pack of 40kW power and 5kWh of storage, satisfying the requirements.Sure after 3 years you'll replace the now knackered lithium module in the hybrid, but the whole of the pure lithium battery will be toast.Basically, with lithium the energy to power ratio is fixed, whereas any energy to power ratio can be achieved with a lithium flow hybrid at a greatly reduced initial cost and greatly reduced ongoing costs.

[pierre oreilly] 25/10/2017 09:11

Foret, I'd love to go but just too far and not enough notice.

[pierre oreilly] 25/10/2017 09:08

Agreed Owen, the circuits themselves only ever show a net demand or generation.

S o say there's a factory with a windfarms and storage, if the demand is 50kW, the wind generation is 60kW, then 10kW goes into the batteries. If the wind generation is 20kW, then 30kW is discharged.

What the article may be trying to describe is our hybrid operation. Still not charging and discharging at the same time, but the lithium bit may appear to be to a journo.

So with a hybrid, additionally to the above which is in the lithium bit, the flow bit of the battery could appear to be charging the lithium bit when the lithium is being discharged iyswim. I.e. if the lithium is supplying 30kW, the flow could appear be supplying 20kW to the lithium, but actually the lithium would supply 10kW of the demand and the flow 20kW.

[dlg3] 25/10/2017 09:07

Mr. Robert Friedland

"We're very deeply interested in how you store electrical energy in the grid.

The beauty of the vanadium redox battery is that you can charge and discharge it at the same time, something that can't be done with a lithium battery. With a vanadium redox flow battery, you can put solar power and wind power into the battery, and you can put excess grid power into the battery at night, and at the same time you can have a stable output into the grid."

[alchemy] 25/10/2017 09:01

Nice achieved price (bid) just then . Wonder if attendees can use their mobiles.Oh sorry that's not a long view post!

[foret] 25/10/2017 09:01

Pierre ; im going to olde farm today. Let me know if you are going ?

[fieldhouse] 25/10/2017 08:59

As Scott has said before:-
Education needed to show the benefits of flow machines!!

[owenski] 25/10/2017 08:57

Are you confusing change of state response times to charge discharge states?

[owenski] 25/10/2017 08:56

"Plus with lithium you have to oversize the battery, you can only discharge 70 - 80% of the energy contained...... with a flow machine you can discharge 100% without any effect on the machine..... so there is 20-30% of a lithium battery you are paying for that you can not use.."

You dont 'oversize' anything, the design specs would take the operation of the product into account when selecting the end use requirements.

You post some useful stuff Dig, but your incessant ramping contains a fair amount of rubbish.

[cheek212] 25/10/2017 08:55

You can a redox flow battery!! Suggest you go and do some more research.

[alchemy] 25/10/2017 08:54

Yes having a hybrid allows us to market to lithium worshippers too . Brand lithium is having a good run.Mainly due to one man. We can now say us too plus....all of this.And position him as vehicles .not static machines and systems.

[owenski] 25/10/2017 08:52

"dlg325 Oct '17 - 08:25 - 3733 of 3740 0 0
lithium also has another problem, you can not rely on it as a permanent fixture, it can not charge at the same time as discharge, so while it is charging you could not use it, meaning all that energy produced while discharging would go to waste, unless you installed 2 lithium installations at double the cost, it is like the Australian Tesla battery it will only be good for a very short duration then it will need to re-charge while it is recharging the battery is useless ...."

You can't use any storage device while it is charging. Your post doesn't make any sense.

Maybe stop trying to ramp this so much.

[dlg3] 25/10/2017 08:45

Plus with lithium you have to oversize the battery, you can only discharge 70 - 80% of the energy contained...... with a flow machine you can discharge 100% without any effect on the machine..... so there is 20-30% of a lithium battery you are paying for that you can not use..

[crystball] 25/10/2017 08:38

No.Hope everyone there has a great day. Look forward to hearing about the visit from others.

[dlg3] 25/10/2017 08:35

crystball you going??

[dlg3] 25/10/2017 08:31

That is why REDT released a lithium hybrid storage machine, to give that initial boost, then the vanadium work-horse can take over supplying permanent electricity.

[crystball] 25/10/2017 08:30

The weather looks good for flying in to Newquay this morning. Often the airfield is shrouded in fog, mist low cluud and drizzle but it isn't like that this morning. It should be a really interesting day.

[dlg3] 25/10/2017 08:27

lithium as a grid installation is useless, it is alright for the quick fix when the power goes down, but then the rush is on to bring in fossil fuel generation...

[alchemy] 25/10/2017 08:27

We're there to be a. RNS it wouldn't be cricket to announce it whilst investors were travelling to the pressie.Lunch time ? Or tomorrow. Or none is perfectly fine if the feed back winds theturbo up.

[dlg3] 25/10/2017 08:25

lithium also has another problem, you can not rely on it as a permanent fixture, it can not charge at the same time as discharge, so while it is charging you could not use it, meaning all that energy produced while discharging would go to waste, unless you installed 2 lithium installations at double the cost, it is like the Australian Tesla battery it will only be good for a very short duration then it will need to re-charge while it is recharging the battery is useless ....

[cheek212] 25/10/2017 08:15

I disagree - these solar parks have taken the Lithium route because they have had no other option previously and Vanadium is still widely unknown. This is changing fast with the Olde House being a perfect example and it won't be too long until vanadium starts to take a sizeable foothold at which stage these solar parks will then have a choice - it will be interesting to then see which technology prevails.