Selectronics myGrid Energy Centre

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Selectronics myGrid Energy Centre

Postby Icarus » Sun Apr 27, 2014 9:45 am

Hi
I have a 5kw of panel with a SMA 5000Tl , Iam on the 60 cent FIT in NSW , it will finish in 20 months when it does I would like to have a system that can store energy to be used when the sun goes down or the grid goes down . One day to be off gird altogether , as electric utilities are charging more and more just to connect to the grid to keep profits up .

This system looks like it will do this http://www.selectronic.com.au/mygrid I have done some googling but have not been able to find anything about the approximate cost , so can anyone give me an idea of costs and how much house rewiring is needed ? .

Thanks
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Re: Selectronics myGrid Energy Centre

Postby davidg » Sun Apr 27, 2014 12:38 pm

It's a complete solution, in cabinet etc. However the battery pack should be sized for the house it will be fitted to, having said that it a solution that comes wit everything needed the amount of wiring depends on the location.

e.g. if it's next to the main switchboard there will not be a lot of wiring.

The configuration of the solution will control how well it works, how long the batteries last and so on.
Cost to a large extent based on the size of the cells used. A proper load profile needs to be completed first, before it could be accurately priced. :D
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Re: Selectronics myGrid Energy Centre

Postby Tracker » Sun Apr 27, 2014 4:58 pm

..
MG0481A


What would that system cost, for example..

Interesting that they quote the Battery Capacity as 16kWH , and the nominal capacity as 10kWH and using GEL batteries.. Ummmmmmmmmmmm :?:

Kinda like the package that Positronic Solar have put together..
..
.
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Re: Selectronics myGrid Energy Centre

Postby davidg » Sun Apr 27, 2014 5:40 pm

Tracker wrote:..
MG0481A
What would that system cost, for example.. Interesting that they quote the Battery Capacity as 16kWH , and the nominal capacity as 10kWH and using GEL batteries


Yes it's based on specific DOD and the number of cycles for that DOD for the cells, which in most cases you wouldn't go to on a daily basis.

I suggest under $20k including shipping and installation, not travel and accommodation though.
Possible Warranty up to 8 years. Batteries used in them are Sonnenschein's.
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
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Re: Selectronics myGrid Energy Centre

Postby Icarus » Sun Apr 27, 2014 8:59 pm

Ok what is DOD ? .
Are these good systems Tracker ? what was the Ummmmmmm for with the Gel batteries ?

So this system would be able to store and the reuse power later in the evening or even when the is a power outage . It sound like electricity suppliers worst nightmare .
I heard today on ABC okams razor that a company in US is build a huge factory to make lithium battery's so that the price will come down dramatically in the next few years , I think it was called the Giga project .

These systems look like the next step to fully optimize use of your solar power as the retailers drop Fits to levels below what they charge to draw power from the grid .

Thanks
Dave
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Re: Selectronics myGrid Energy Centre

Postby Tracker » Sun Apr 27, 2014 9:32 pm

Icarus wrote:Ok what is DOD ? .
Are these good systems Tracker ? what was the Ummmmmmm for with the Gel batteries ?


I imagine the system is OK.. I know little about then, but DAVIDG, seems comfortable with them..
DOD... depth of discharge... the amount of battery power that you suck from the battery....
A safe and typical maximum DOD is 20% for LA batteries, whereas Lithium seems happy going down to 50 and even 30%

Ummmmmmm.... was concern that they were selling a system with 16kWK of battery as a 10kWH useable system .. like a 16k total supplying 10k.. 75% DOD...... at that rate it would likely last a few months...

But clarification. Suggested the it was a peak of 16, and preferred normal of 10k..... so likely a 50kWH gel battery, not the 16 as could be interpreted from the figures.. they should have had three figures..
Nominal Battery Capacity.. peak useable capacity... Normal Capacity

Yes, lithium... we really wait impatiently for a cheaper choice

I have a small hybrid system running now... I have clocked over a megawatt of free power.. free PEAK power, that the retailer failed to sell... yes, these systems will become a nightmare, if people can afford to set them up..

The only redress for retailers, will be to convince Authorities to write draconian rules to make grid-avoidance near impossible ... :twisted:
..
.
Last edited by Tracker on Sun Apr 27, 2014 9:51 pm, edited 1 time in total.
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Re: Selectronics myGrid Energy Centre

Postby davidg » Sun Apr 27, 2014 9:34 pm

Icarus wrote:Ok what is DOD ?

DOD = Depth of discharge
Icarus wrote:what was the Ummmmmmm for with the Gel batteries ?

He like me rather like "LiFePO4 cells"= "Lithium Cells" however I have spoken to Selectronics about this and been on there accredited training etc, there are reasons why they have picked on these and they do guarantee the solution after all.
Icarus wrote:So this system would be able to store and the reuse power later in the evening or even when the is a power outage . It sound like electricity suppliers worst nightmare .

Look below at my system spec. While it's not a "my grid" kit. It's using the same core system equipment eg the SPMC-482 8-) with suitable set of priorities/schedules to suit our use.
Icarus wrote:These systems look like the next step to fully optimize use of your solar power as the retailers drop Fits to levels below what they charge to draw power from the grid .

Heck you can have it today. ;) :lol: I've been doing them for quite a while now, the big change in the selectronics sp-pros has been the firmware improvements which allow for a wider range of rules to used compared to previous versions of firmware.
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An OTT Genset for a house.
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Re: Selectronics myGrid Energy Centre

Postby Tracker » Mon Apr 28, 2014 10:59 am

...
and - I would much have preferred LITHIUM batteries in such a "Modern" presentation..

those in the know don't seem to like GEL/AGM/VRLA batteries.
They work for me but I am slightly unsure as to exactly how to charge them, and no doubt the sealed nature is so much more convenient for supply as a package with minimal maintenance..

DavidG - Do you consider the package to be LITHIUM-READY..
ie. all the profiles are there
and so as to be able to compare, how do you think the PACKAGE compares to the Positronic one.. :?:
Are they doing the exact same job.. (I do note that the Positronic package is specifically intended for OFF grid, but naturally can be used in any likely mode, like Hybrid..)
..
.
Retired Engineer and keen PV experimenter - Always ready to learn and share.
2 x CMS2000 (fan cooled) GCI and SE 170W panels
1.7kW First Solar/Outback Island circuit - Peak Replacement Power
Governments won't save the world :-) They will just TAX it :-(
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Re: Selectronics myGrid Energy Centre

Postby davidg » Mon Apr 28, 2014 8:40 pm

Tracker wrote:... and - I would much have preferred LITHIUM batteries in such a "Modern" presentation..


I would to some extent agree, Selectronic can be quite conservative. You can be sure with the My Grid solutions is that it will work and the batteries will deliver the cycles based on DOD that they say the batteries have been around a long time, they have the proven track record, that's the reason why they went down this particular track at this time, they are not against LiFePO4 it's just that it's fairly new by battery technology standards at this point in time and they wanted to be sure they delivered a reliable solution, down the track you could always change to LiFePO4 when the original batteries eventually wear out the cabinet has the space, I don't see a major issue doing that.

Tracker wrote:those in the know don't seem to like GEL/AGM/VRLA batteries.

There are advantages and disadvantages to both technologies, PB is well known, having been around for decades. LiFePO4 is fairly new you really have to study it hard and fully understand what they really need to be confident with/use them.

Tracker wrote:DavidG - Do you consider the package to be LITHIUM-READY..

I think the SP-pro with the right BMS (Fail-safe) is, so Yes.

Tracker wrote:ie. all the profiles are there and so as to be able to compare, how do you think the PACKAGE compares to the Positronic one

When it comes to being a True Hybrid I think the SP-pro/Kaco is probably superior, with generic /any other brand GCI and a (I'm going to call it a "magic box unit") it is worst case at least as good. I personally have not needed/found a cabinet to put it all in so it is an all in a big box solution YET.

The MY-Grid is essentially the same, but with PB and as mentioned specifically targeted at Grid-Hybrid, with or without export.

The export control support is something that is inherent to the SP-Pro, also a new version out that will not export power at all for those areas/distributors that have got there knickers in a knot over export of power when batteries are involved, that version is now on the CEC list, so fully approved to boot.

Tracker wrote:Are they doing the exact same job.. (I do note that the Positronic package is specifically intended for OFF grid, but naturally can be used in any likely mode, like Hybrid..)

Yes and no, the My-grid is specifically at hybrid with and without export. LiFePO4 is simply another battery technology that can be used that a few businesses/people have spent a lot of effort learning how to implement and use and I hope correctly.

Selectronics came from totally off-grid foundation and evolved to Hybrid/connected to the grid a lt of what they did off-grid lent itself to connecting to the grid. The current iteration of firmware has taken the Hybrid concept to a new level with the multi-level priority system.

You should see whats coming for monitoring, still development/beta but it's pretty cool.

Not to anyone in particular,,,,,,I've said this before,
and just in case someone wonders, no I don't work for them.
I really do like the product though and I do install and support it though, as well using them myself. 8-) 8-)
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
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Re: Selectronics myGrid Energy Centre

Postby Tracker » Mon Apr 28, 2014 11:50 pm

..
It is better to be involved with product that excites you and you understand, than one which returns the bigger profit and you have little idea about..

It's much like Positronic Solar and the products that they USE.. some criticise that choice, but it's a group of products that SEEMS WORK for them ... and they can support ..
..
.
Retired Engineer and keen PV experimenter - Always ready to learn and share.
2 x CMS2000 (fan cooled) GCI and SE 170W panels
1.7kW First Solar/Outback Island circuit - Peak Replacement Power
Governments won't save the world :-) They will just TAX it :-(
Tracker
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