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 21 
 on: September 27, 2020, 08:53:48 AM 
Started by Bugtownboy - Last post by M
All politically biased comments so far.
Has anyone ever considered the 'Saudi Arabia of wind power' expression in terms of energy self-sufficiency?
Once there is sufficient renewable power in the UK, it will be independent of large-scale fuel/energy imports, in the same way that Saudi Arabia is.
The difference is that oil will run out, renewables will not. That is why they are called 'renewables'.
We are stuck with the present incumbent, but piling scorn and ridicule on Boris Johnson is extremely non-productive considering the lack of alternative plans by any other gang of 'leaders'.
To do so is as fatuously facile as criticizing the colour of the bucket used to bail water out of a leaking lifeboat, whilst standing to one side watching with folded arms.
 fight

My issue with the Saudi comparison is that they are more than just self sufficient on oil, it is their main source of international trade too.

I actually think renewables have come on leaps and bounds under the tories, and can't have seen anyone else doing better (not saying they'd have done worse either).



I think the rise in renewables under the Tories has been despite, not because of.
Any party would have rolled out as much (or more) off-shore wind, and possibly redirected the HPC monies too.
Also the Tories stopped the house building efficiency one year short of the finish line which would have required CO2 reductions, most likely through on site (or farm) renewables, they blocked the on-shore wind industry completely whilst promoting fracking (a total waste of time and energy) and did everything to slow down PV rollout just as it was on the brink of rapid growth, thus clutching defeat from the jaws of victory.

I don't say this politically, but as a reference to actual policies and actions that they took.
Quote
My issue with the Saudi comparison is that they are more than just self sufficient on oil, it is their main source of international trade too.

I agree about the potential of the UK as a self sufficient energy producer with enormous export potential.

 22 
 on: September 27, 2020, 12:13:28 AM 
Started by nowty - Last post by Tinbum
Thanks, i thought that was the case. Smiley Smiley

 23 
 on: September 26, 2020, 11:41:38 PM 
Started by nowty - Last post by nowty
Nowty,

You still run SMA sunny islands don't you or you did, the 5048?

I've been thinking of buying some python batteries as I'm hopefully building a new house (zero vat rate). As i understand it they will run on the Sunny Islands won't they?


I used to have an off grid 24V Sunny Island but thats now obsolete. I managed to sell it along with my forklift lead acid batteries. I now have a Sunny Island 8.0H v12 and I run it grid connected with G100 export limitation and whole house backup. If you run back through this whole thread you will see what I did.

Officially the Pylontechs (I think thats what you meant) don't work with the Sunny Islands but you can run the Pylontechs as stand alone. So they still do their over voltage, under voltage, over current, over temp protections, etc. But I set them up on the Sunny Island as a lead acid battery. I then set the Boost (Bulk), Full (mini EQ) and Float voltage the same (full battery V), disable the auto EQ charge, and set the temp compensation to zero. The only problem I have is it insists on doing a "Full charge" (like a mini EQ) every 8 full battery cycles and uses grid power to achieve this if not enough solar PV is available. So my work around is to catch it before it hits the 800% of battery cycles and then hit manual EQ, followed a few secs later by cancel EQ and it goes back to boost or float and resets the cycle counter.

My battery bank is so big that I only do the 8 cycles in one month in winter (via cheap rate grid charging) and never even do 8 cycles for the whole of the summer. wackoold
If they ever do manage their spec'd >6000 cycles I wont be here to see it. faint

 24 
 on: September 26, 2020, 08:56:16 PM 
Started by EcoStatic - Last post by camillitech
I'll be in touch when I get my 216 batteries Nowty  whistlie  fingers crossed!

 25 
 on: September 26, 2020, 08:45:35 PM 
Started by EcoStatic - Last post by nowty
If only this were likely to be true but do you really think that the Pylontech (or whatever) will be compatible with the same model in eighteen months time, let alone five years?


cells are cells, just series/parallel them up, add your own BMS ?

But will it work with the BMS you already have? Is it really that simple, my limited experience says not. I just don't think it's that simple, perhaps it is and I'm over thinking it  Huh





My Chinese balancer seems to just work.

No RS232 or firmware required, I have 5 x 4.8kWh batts in parallel to each BMS, all Growatt batts bought second hand, all bought over several years. (And a few Pylontechs thrown into the mix for good measure). All cells are kept within a handful of millivolts.

https://www.navitron.org.uk/forum/index.php/topic,30476.45.html

 26 
 on: September 26, 2020, 08:41:24 PM 
Started by nowty - Last post by Tinbum
Nowty,

You still run SMA sunny islands don't you or you did, the 5048?

I've been thinking of buying some python batteries as I'm hopefully building a new house (zero vat rate). As i understand it they will run on the Sunny Islands won't they?


 27 
 on: September 26, 2020, 08:12:06 PM 
Started by nowty - Last post by nowty
We had a couple of crappy solar days earlier in the week and now needing the heat on in the house via the heatpump, so the batteries dropped fairly low which was a good time to see how the balancer works when the batteries drop from full to empty over a couple of days. I thought they might initially drift a bit but no, all stayed within 5mV and most within just 2mV.

So I have now decided to run the battery bank between 90% to 10% SOC (lower end down from 20%) so I have increased my total useable battery bank by another 5 kWh's to 50+ kWh's. fingers crossed!

 28 
 on: September 26, 2020, 06:21:03 PM 
Started by Bugtownboy - Last post by smegal
All politically biased comments so far.
Has anyone ever considered the 'Saudi Arabia of wind power' expression in terms of energy self-sufficiency?
Once there is sufficient renewable power in the UK, it will be independent of large-scale fuel/energy imports, in the same way that Saudi Arabia is.
The difference is that oil will run out, renewables will not. That is why they are called 'renewables'.
We are stuck with the present incumbent, but piling scorn and ridicule on Boris Johnson is extremely non-productive considering the lack of alternative plans by any other gang of 'leaders'.
To do so is as fatuously facile as criticizing the colour of the bucket used to bail water out of a leaking lifeboat, whilst standing to one side watching with folded arms.
 fight

My issue with the Saudi comparison is that they are more than just self sufficient on oil, it is their main source of international trade too.

I actually think renewables have come on leaps and bounds under the tories, and can't have seen anyone else doing better (not saying they'd have done worse either).

 29 
 on: September 26, 2020, 01:01:34 PM 
Started by EcoStatic - Last post by camillitech
If only this were likely to be true but do you really think that the Pylontech (or whatever) will be compatible with the same model in eighteen months time, let alone five years?


cells are cells, just series/parallel them up, add your own BMS ?

But will it work with the BMS you already have? Is it really that simple, my limited experience says not. I just don't think it's that simple, perhaps it is and I'm over thinking it  Huh

 30 
 on: September 26, 2020, 12:24:26 PM 
Started by EcoStatic - Last post by knighty
If only this were likely to be true but do you really think that the Pylontech (or whatever) will be compatible with the same model in eighteen months time, let alone five years?


cells are cells, just series/parallel them up, add your own BMS ?

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