toluxa1:
Sterling bank Covering their HQ with Solar panels.
What do you guys think?

waste of resources. this is the tropics, panels perform best at/or near horizontal/<15 deg.....there is a sharp decline in performance if you exceed 50degrees, those panels are at/near 90degrees, a 500watts panel at such inclination will behave like an 80watts panel.

perhaps, the bank is doing the installation as a bragging right, or to pass a message----viewing it from the economics prism, it makes absolutely no sense

samir101ng:


Nice Review

This is a basic solar charge controller that's affordable for budget conscious people. However, you get what you pay for as it doesn't have some of the more advance features that others have. But most importantly is that you don't get the nameplate readings you see compared to using an actual clamp meter to test the real world readings. Here are links to their official stores:

1. Powmr Official Store

https://ysmart.aliexpress.com/store/609653?spm=a2g0o.productlist.0.0.533e5d4fFeAwCE

2. MakeSkyBlue Official Store

https://makeskyblue.aliexpress.com/store/1759821?spm=a2g0o.productlist.0.0.1d6e1d21dvPKn2

You can order both from AliExpress direct or any major reseller but be guided that these are chinese clones. I am however more partial to MakeSkyBlue No. 2 compared to Powmr No. 1. They have better documentation and their products are of a more higher quality. But they are both basically the same thing. As stated, they are cheap but your performance mileage may vary.

Thanks bro for the link. Can you please provide URL for Epever official store on AliExpress?

NiyiOmoIyunade:
I have had good experiences with the Fangpusun 100v/50a CCs and I think 1 or 2 units should work nicely for a 12v system - the CC can handle 12v or 24v battery configs.

My experience with Epever products was middling - decent and reliable but the MPPT algorithm was slow and the solar harvest generally suboptimal vs other CCs.

I have seen a lot of attention on the MakeSkyBlue and PowMr products but have no direct experience - the one thing I ever bought from PowMr (MC4 connectors) was total crap and unuseable.

It's noted, thanks for your input.

earthrealm:


waste of resources. this is the tropics, panels perform best at/or near horizontal/<15 deg.....there is a sharp decline in performance if you exceed 50degrees, those panels are at/near 90degrees, a 500watts panel at such inclination will behave like an 80watts panel.

perhaps, the bank is doing the installation as a bragging right, or to pass a message----viewing it from the economics prism, it makes absolutely no sense

They must have factored the orientation before now. Before the direction of sun rises upwards btw 9/11 battery don full Hence,getting these quantities to maximize energy even before noon.I doubt if they would connect all pv together to as a whole to just one ba3 bank. Probably every section/floor to its own cc and batteries. To me there is a big economic sense here and far better dan running on desel.

This would not be your conventional design such as you would find in the average residence.

Batteries would hardly be used in this scenario or they would be sized relatively small since the priority would be shifting daytime energy consumption to PV.

Terms like AC-PV, grid tie, PV-Diesel should come to mind.

The system goal for daytime would be to convert PV energy to AC for immediate consumption. The system would run in tandem with grid (allowing less use of PHCN credits) and diesel gen (allowing to use a much smaller diesel gen and/or reduce gen run time and thereby save on diesel costs).

Night time could be running any number of algorithms depending on the customer's use case.

dollarnaira:


They must have factored the orientation before now. Before the direction of sun rises upwards btw 9/11 battery don full Hence,getting these quantities to maximize energy even before noon.I doubt if they would connect all pv together to as a whole to just one ba3 bank. Probably every section/floor to its own cc and batteries. To me there is a big economic sense here and far better dan running on desel.

toluxa1:
Sterling bank Covering their HQ with Solar panels.
What do you guys think?

Likely all part of a marketing strategy --. After covering all the windows and preventing natural light from entering. A fraction of the energy produced by the panels would also be spent in providing artificial lightening during the day.

Ask questions from people who installed solar panels on their steep send down the rain roofs. Sad sob stories plenty...not to talk of this one being at 90 degrees. Its in


https://punchng.com/bank-launches-platform-for-solar-energy-consumers/


Seems the deal was signed last year.
https://www.vanguardngr.com/2021/10/sterling-bank-powers-corporate-hq-with-specialized-solar-energy/

Agreed, the disadvantages of a wall-mounted or vertical solar array outnumber the advantages. However, it’s used in cases where you have no better options in terms of mounting space on or around a building, yet the client needs to have renewable energy in the building.
These type of setups can still generate 100 percentage of required energy if intelligent and calculated pv oversizing is done.
So please calm down a bit.

1. We can't be more intelligent than the constituted group of professionals (both in finance and electrical/solar engineering) who carried out the justifications and approval for this investment.

2. For sterling, probably the free daytime energy required for operations, with less than 'expected' storage cost, is mainly the target here; a way of energy cost reduction long term.

3. You will be amazed by the actual, low ex-factory cost for those panels, direct from the manufacturers. This is not Alaba market hustlers' arrangement.

4. Proper mid-term and long term cost benefit analysis of this project most have been done.

So kindly look beyond the assumption of it being just a marketing strategy, bragging rights, and all the < 45 degrees, 90 degrees, horizontal, economics prisms, inclination, et al jargons.

There are several factors involved in the setup, which is above the paygrade of us all, so lets leave those assumptions aside.

Get 1 piece solar panel, place it flat on the floor, hook it up to this device (panel tester). Incline it at 45 degrees, 60 degs and 90 degrees....and observe.
If you want to be super accurate..get several units of the tester and connect to different panels simultaneously, then come back lets have this discussion again.
This tool automatically spew out panel energy generation instantaneously,

For such an install, they would likely deploy micro inverters, to improve efficiency & harvest, the economics isn't just jiving with me, I don't respect big titles and names, some big names&titles also make mistakes too --------

https://www.theguardian.com/artanddesign/2013/sep/06/walkie-talkie-architect-predicted-reflection-sun-rays

When i was a lot younger, when my 12v inverter battery ran down at night, i had this wonderful idea of starting my car and running jumper cables to the battery to recharge....leaving my car idling tru the night (i had no gen then), would it have worked...hell yes, would it make any economic sense.....hell no.


Anyway mek we leave the matter, if only sterling bank would open up the details of the project, then can there be any reason to discuss further on this project.

earthrealm:
There are several factors involved in the setup, which is above the paygrade of us all, so lets leave those assumptions aside.

Get 1 piece solar panel, place it flat on the floor, hook it up to this device (panel tester). Incline it at 45 degrees, 60 degs and 90 degrees....and observe.
If you want to be super accurate..get several units of the tester and connect to different panels simultaneously, then come back lets have this discussion again.
This tool automatically spew out panel energy generation instantaneously,

For such an install, they would likely deploy micro inverters, to improve efficiency & harvest, the economics isn't just jiving with me, I don't respect big titles and names, some big names&titles also make mistakes too --------

https://www.theguardian.com/artanddesign/2013/sep/06/walkie-talkie-architect-predicted-reflection-sun-rays

When i was a lot younger, when my 12v inverter battery ran down at night, i had this wonderful idea of starting my car and running jumper cables to the battery to recharge....leaving my car idling tru the night (i had no gen then), would it have worked...hell yes, would it make any economic sense.....hell no.


Anyway mek we leave the matter, if only sterling bank would open up the details of the project, then can there be any reason to discuss further on this project.

Na d pix u post catch my eye.Nice device

ManAdii:
Anything @Penuelseun tells you about TBB inverter believe him. I'm using the 1.2kva 24v. That inverter is dope. Na money remain make I add solar panels to my set up.
Even with my China battery I dy enjoy light 24/7 as I do charge with Nepa.

What do you power with this?

60A Powmr MPPT Solar Charge Controller available
Price: 61,000 firm

Fairly used 30A Famicare Charger

Price: 15,000

Penuelseun:
I use pwm because I don't really see a difference between pwm and mppt in the 12v range, my panels have a VOC of around 42v which I divided into 2 to get 22v. I get between 32a to 35a going into my battery on a good solar day. Will go the route of mppt maybe when I upgrade to 48v systems

Boss how many hours did it take to achieve this harvest?

Penuelseun:
I used the tbb 1.2kva inverter, although I currently use the ceepro 600w as I have sold the 1.2kva to a client. A double door fridge with a freezer at the bottom is what I use, don't really know the litres as it is old but I see a starting surge of around 600w with 150w running.
Use 350w and 260w panels connected in parallel. Use a 10a DC supply unit as my ac charger.

Does tbb 1.2kva inverter have lcd display that Support the below features:

1. Can it display Battery Backup (i.e time remaining in case of power cut) ?

2. Can it display Battery Charging Time (i.e time it would take to charge the battery from grid)

3. Can it easily connect to the smart phone via an application and share real time inverter battery performance statistics?

4. Does it show Load Percentage ?

5. Can it display what the solar panels produced?

6. Can I manually set charging current & charging current?

If the inverter itself does not have above features, which of these accessories can give the aforementioned features (Cyber System Display Monitor OR Vision Pro / Vision Lite) ?

NiyiOmoIyunade:
Felicity have a decent 1.5Kva 12v and 2.5Kva 12v inverter.

I am not sure your decision about inverter nominal voltage but either of these two above should take care of your power needs for a 2 battery system such as you contemplate and eliminate the need for a separate standalone charger.

You can couple this with a good quality PWM or MPPT such as Fangpusun 100v/50a and you are set.

There was also a Zinox Axpert 12v hybrid inverter one time that had a charge controller bundled in - it was deep wine in color and was a decent deal although not pure sine wave as I recall.

The good folks on this forum have provided local contacts for Felicity and a bit of reading can get you any other items

Oga Niyi, I don come again oh.

TBB 1.2kva inverter has 40A inbuilt charger, do I still need separate charger to charge single 220ah 12v tubular battery first before using it with the inverter?

ojeysky:
A pack of 8 brand new 230ah Eve cells still available @80k each. Reachout if interested... Make a 24k pack or 2 units of 12v packs.

Happy new month people. A pack of 8 cells still available

TechGeek777:


Oga Niyi, I don come again oh.

TBB 1.2kva inverter has 40A inbuilt charger, do I still need separate charger to charge single 220ah 12v tubular battery first before using it with the inverter?

From my own experience of using the inbuilt charging function of two inverters (Luminous and Brighton), it undercharged my battery.

My then battery had a float recommendation of 14.5 - 14.9v, but at 13.0v, the inverters would stop charging and indicate the battery as being full.

When I stop charging, it would drop to 12.5 and hit 12.0v after a few hours of minimal usage. I kept wondering what was going on. It turned out that the inverters were undercharging my battery so I had to get an external smart battery charger and pushed it 14.9v and the battery began working well. Sadly, I had disposed off one of my batteries then as scrap coz I thought the fault was from the battery.

Bottom line, try getting a stand alone smart charger.

TechGeek777:


Boss how many hours did it take to achieve this harvest?

I mean instantaneous current. My batteries gets fully charged daily

TechGeek777:


Does tbb 1.2kva inverter have lcd display that Support the below features:

1. Can it display Battery Backup (i.e time remaining in case of power cut) ?

2. Can it display Battery Charging Time (i.e time it would take to charge the battery from grid)

3. Can it easily connect to the smart phone via an application and share real time inverter battery performance statistics?

4. Does it show Load Percentage ?

5. Can it display what the solar panels produced?

6. Can I manually set charging current & charging current?

If the inverter itself does not have above features, which of these accessories can give the aforementioned features (Cyber System Display Monitor OR Vision Pro / Vision Lite) ?

small tbb inverters do not have any display on them, but they sell external display meter through which you can edit the settings and look at the inverter information. Read it can be integrated online through raspberry pi.

zeestone99:


I sell rmb. I can help you send rmb to your suppliers.
For those that need rmb. Dm for rates
Call/chat - 08117398294

I need ¥¥1600 urgently .

TechGeek777:


Thanks bro for the link. Can you please provide URL for Epever official store on AliExpress?

Apologies but Epever doesn't seem to have an official store on AliExpress. However, you can check out the Powmr Official Store i posted and amongst the products on sale in that store you will see Epever charge controllers from the same vendor. If your interested in Fangpusun Charge Controllers, Inverters kindly check out their official store also:

1. Wenzhou Xihe Electric Co., Ltd. (Fangpusun)

https://www.aliexpress.com/store/535617?spm=a2g0o.productlist.0.0.41d87223hKBIUT

Fangpusun products are chinese clones of reputable brands like Victron, Studer & Outback but they give decent performance for the price range more than some unnamed chinese brands. Their firmware maybe out of date compared to the original which affects performance.

odimbannamdi:


From my own experience of using the inbuilt charging function of two inverters (Luminous and Brighton), it undercharged my battery.

My then battery had a float recommendation of 14.5 - 14.9v, but at 13.0v, the inverters would stop charging and indicate the battery as being full.

When I stop charging, it would drop to 12.5 and hit 12.0v after a few hours of minimal usage. I kept wondering what was going on. It turned out that the inverters were undercharging my battery so I had to get an external smart battery charger and pushed it 14.9v and the battery began working well. Sadly, I had disposed off one of my batteries then as scrap coz I thought the fault was from the battery.

Bottom line, try getting a stand alone smart charger.

Experience is a bad ass teacher.. lol

At 40a per 12v 220Ah battery you should have more than enough especially if your primary charge source will be solar.

The next thing to make sure of is that your inverter and solar charger have editable charge voltage settings or at worst a charge profile selection that is suitable for your flooded batteries - on average flooded batteries need 14.6v or more per 12v and most basic inverters are incapable of getting to that voltage level.

TechGeek777:


Oga Niyi, I don come again oh.

TBB 1.2kva inverter has 40A inbuilt charger, do I still need separate charger to charge single 220ah 12v tubular battery first before using it with the inverter?

odimbannamdi:


From my own experience of using the inbuilt charging function of two inverters (Luminous and Brighton), it undercharged my battery.

My then battery had a float recommendation of 14.5 - 14.9v, but at 13.0v, the inverters would stop charging and indicate the battery as being full.

When I stop charging, it would drop to 12.5 and hit 12.0v after a few hours of minimal usage. I kept wondering what was going on. It turned out that the inverters were undercharging my battery so I had to get an external smart battery charger and pushed it 14.9v and the battery began working well. Sadly, I had disposed off one of my batteries then as scrap coz I thought the fault was from the battery.

Bottom line, try getting a stand alone smart charger.

Thanks for the input bro, the bolded is noted that means I should be getting 40A charger for single 220A.

Penuelseun:
I mean instantaneous current. My batteries gets fully charged daily

Noted bro

Penuelseun:
small tbb inverters do not have any display on them, but they sell external display meter through which you can edit the settings and look at the inverter information. Read it can be integrated online through raspberry pi.

Okay thanks bro, which of the display meter can get me the aforementioned features?

samir101ng:


Apologies but Epever doesn't seem to have an official store on AliExpress. However, you can check out the Powmr Official Store i posted and amongst the products on sale in that store you will see Epever charge controllers from the same vendor. If your interested in Fangpusun Charge Controllers, Inverters kindly check out their official store also:

1. Wenzhou Xihe Electric Co., Ltd. (Fangpusun)

https://www.aliexpress.com/store/535617?spm=a2g0o.productlist.0.0.41d87223hKBIUT

Fangpusun products are chinese clones of reputable brands like Victron, Studer & Outback but they give decent performance for the price range more than some unnamed chinese brands. Their firmware maybe out of date compared to the original which affects performance.

Noted bro thanks.

Moneyboyz:


Are you saying that all these used panels sold in alaba and oshodi are not okay?
I just bought 6 200w penels today, I hope I won't regret this.

I didn't mention Alaba or Oshodi.
If you know your way around Alaba, you'll get decent and even top grade products. A couple of the good brands have offices around there too.

jackson44:


I need ¥¥1600 urgently .

Come to our office as discussed. Thanks

Solar sweet oh... So after mustering courage and finance and grace to relocate from a house that the landlord doesn't allow solar installation, only one tenant has the gate key, needs you to get permission before putting mosquito nets, etc... I moved into a bigger apart5with the landlord in full support of your convenience. In his words... "My son, make the place comfortable as you want.". I installed some of those beoken panels I also helped some persons here procure.... My harvest with a dull sky hit about 5 times what my former installation could do on a very good day.... . Plus upgrade from about 1kw panels to around 1.7kw....and i never exhaust all my pv panels I bought.

Na to upgrade enter 48v system de my mind now.

Join me thank God my people.

NiyiOmoIyunade:
At 40a per 12v 220Ah battery you should have more than enough especially if your primary charge source will be solar.

The next thing to make sure of is that your inverter and solar charger have editable charge voltage settings or at worst a charge profile selection that is suitable for your flooded batteries - on average flooded batteries need 14.6v or more per 12v and most basic inverters are incapable of getting to that voltage level.

Boss my primary charge for now could be Grid/Gen, do I still need standalone charger?

Do you have idea if PowMr 60A MPPT or MakeSkyBlue 60A MPPT have editable charge voltage settings?

Trippledots:
Solar sweet oh... So after mustering courage and finance and grace to relocate from a house that the landlord doesn't allow solar installation, only one tenant has the gate key, needs you to get permission before putting mosquito nets, etc... I moved into a bigger apart5with the landlord in full support of your convenience. In his words... "My son, make the place comfortable as you want.". I installed some of those beoken panels I also helped some persons here procure.... My harvest with a dull sky hit about 5 times what my former installation could do on a very good day.... . Plus upgrade from about 1kw panels to around 1.7kw....and i never exhaust all my pv panels I bought.

Na to upgrade enter 48v system de my mind now.

Join me thank God my people.

We thank God for you bro.

NiyiOmoIyunade:
At 40a per 12v 220Ah battery you should have more than enough especially if your primary charge source will be solar.

The next thing to make sure of is that your inverter and solar charger have editable charge voltage settings or at worst a charge profile selection that is suitable for your flooded batteries - on average flooded batteries need 14.6v or more per 12v and most basic inverters are incapable of getting to that voltage level.

Bro abeg help me look if this Output specification -> "Vented/ Sealed / Gel / NiCd / Lithium battery(defined voltage for other battery by user)" means editable charge voltage settings

Does this mean MakeSkyBlue can not work for flooded/tubular? -> Suitable for battery types of sealed lead acid, vented Gel, and Lithium battery

Attached images are the description from
https://makeskyblue.com/collections/solar-controller/products/60a-mppt-solar-charge-controller