NewStats: 3,264,081 , 8,182,530 topics. Date: Monday, 09 June 2025 at 03:10 PM t5k

lordsharks:
Please experts in the house, any idea what it will take to get 24hrs power for a single room self con.
- 1 ceiling fan
- 1 TV
- Laptop
- Couple LED bulbs
- Dstv and couple phone chargers

1.5kw inverter
1000w pv
2.5kwh lifepo4 battery

~1.2m project

So I did a little calculation today. I could not believe that I would be needing to pay NEPA almost 110K daily on Band-A.

I wonder how would have coped with BAND-A Tariff without Solar Energy.

Someone should help me check how much I would have been spending on daily energy needs without solar.

Because it seems I got it wrong.

Original brand new Jinko solar s available
Call or WhatsApp me on 09116033581

lordsharks:
Please experts in the house, any idea what it will take to get 24hrs power for a single room self con.
- 1 ceiling fan
- 1 TV
- Laptop
- Couple LED bulbs
- Dstv and couple phone chargers

Anywhere from 950k to 1.1m depending on choice of brand including installation charge (if you're not installing yourself)

yoniehuin:


yes 10 hours including night time

How many solar should i add to this set up and what should be the number of battery?

Rough estimate based on your aforementioned loads give or take:

1 40 inches tv, - 100w or less
1 deep freezer, - 150W or less
1 1.5 hp inverter ac - 1.5kw or less
1 industrial fan, - 300w or less
1 normal fan - 50w (can be more or less)
2 laptop - 65W generally (if it's not a gaming laptop or MacBook)
1 decorder - 50-100w
i internet modern - 20w
16 bulbs , the low energy ones - 500w or less

Total - 2.785kw. Aprox 2.8kw

You'll need a 30kwh lithium battery to run the night time loads happily. 15kwh lithium battery will be sufficient if you alternate your 1.5HP AC usage during night time.

yoniehuin:


yes 10 hours including night time

How many solar should i add to this set up and what should be the number of battery?

Rough estimate based on your aforementioned loads give or take:

1 40 inches tv, - 100w or less
1 deep freezer, - 150W or less
1 1.5 hp inverter ac - 1.5kw or less
1 industrial fan, - 300w or less
1 normal fan - 50w (can be more or less)
2 laptop - 65W generally (if it's not a gaming laptop or MacBook)
1 decorder - 50-100w
i internet modern - 20w
16 bulbs , the low energy ones - 500w or less

Total - 2.785kw. Aprox 2.8kw

You'll need a 30kwh lithium battery to run the night time loads happily. 15kwh lithium battery will be sufficient if you alternate your 1.5HP AC usage during night time.

A total of 6-10kw solar s will do. That's about 10-15 625/615W s.

AinsSama:


Anywhere from 950k to 1.1m depending on choice of brand including installation charge (if you're not installing yourself)

I'm going more of a DIY route

lordsharks:


I'm going more of a DIY route

Baba go buy 1800watt sachet inverter from @linnov. Thats about 70k
Powmr charge controller 100k
Cworth lithium battery 200k or powmr 300k
1 580watt or 400watt jinko .

You should be able to start with this

Gshems:


Baba go buy 1800watt sachet inverter from @linnov. Thats about 70k
Powmr charge controller 100k
Cworth lithium battery 200k or powmr 300k
1 580watt or 400watt jinko .

You should be able to start with this

Thanks man

Gshems:


Baba go buy 1800watt sachet inverter from @linnov. Thats about 70k
Powmr charge controller 100k
Cworth lithium battery 200k or powmr 300k
1 580watt or 400watt jinko .

You should be able to start with this

The problem with 12v setups is, how long till he outgrows it?

HeavenlyBang:


The problem with 12v setups is, how long till he outgrows it?

He has less than 200watt load. Until he is ready to upgrade the 12v will serve him till then. Not everybody can afford 1m for solar. But there is nothing wrong with 12v systems. With 12v he can power all his devices.

Gshems:

He has less than 200watt load. Until he is ready to upgrade the 12v will serve him till then. Not everybody can afford 1m for solar. But there is nothing wrong with 12v systems. With 12v he can power all his devices.

Fair enough. A 100aH 12v battery won't give him 24 hours supply, though, so he should look for a bigger battery.

Also peak load is about 300w, so he needs about 700w+ of PVs.

Good evening everyone. Great job you guys are doing here.

Please I want to know, the Powmr 4.2KW 24v hybrid inverter clearly states that the mppt startup voltage is 60V. Can 2 Jinko 555w s in series work with the inverter? At least for the time being till more s can subsequently be added in series?

Or what would you advice? Or has anyone practically used similar setup and it worked well? Thanks for your reply.

Please gurus, I need a solar system specifications that can run

1 laptop of 50w
3 Phones
Fan of 30w
5 LED bulbs.

The laptop will be used only day time.

favouredbymercy:
Good evening everyone. Great job you guys are doing here.

Please I want to know, the Powmr 4.2KW 24v hybrid inverter clearly states that the mppt startup voltage is 60V. Can 2 Jinko 555w s in series work with the inverter? At least for the time being till more s can subsequently be added in series?

Or what would you advice? Or has anyone practically used similar setup and it worked well? Thanks for your reply.

Yes it works

favouredbymercy:
Good evening everyone. Great job you guys are doing here.

Please I want to know, the Powmr 4.2KW 24v hybrid inverter clearly states that the mppt startup voltage is 60V. Can 2 Jinko 555w s in series work with the inverter? At least for the time being till more s can subsequently be added in series?

Or what would you advice? Or has anyone practically used similar setup and it worked well? Thanks for your reply.

Two 550w Jinko s in series will give you about 90v, so yes.

HeavenlyBang:


The problem with 12v setups is, how long till he outgrows it?

Seems you didn't enjoy 12v during your time. .

I have been on 12v since I started using Inverter as far back 2012.

You only upgrade when there is need.

Na ontop of the 12v na im the following they:
Freezer
Tv
Iron
Blending
0.5h submersible, loading...
Lightnings
Charging

Na sense them take they live this life.
I don't waste energy. I love simplicity. It is simply simple. Simple!!!

Please can you recommend good brand lifepo4 battery of this size with a fair price?

HeavenlyBang:


1.5kw inverter
1000w pv
2.5kwh lifepo4 battery

~1.2m project

Please can you give us the capacity of your setup when you started and how you scale? It will be very helpful as I intend to start progressively

dollarnaira:


Seems you didn't enjoy 12v during your time. .

I have been on 12v since I started using Inverter as far back 2012.

You only upgrade when there is need.

Na ontop of the 12v na im the following they:
Freezer
Tv
Iron
Blending
0.5h submersible, loading...
Lightnings
Charging

Na sense them take they live this life.
I don't waste energy. I love simplicity. It is simply simple. Simple!!!

dollarnaira:


Seems you didn't enjoy 12v during your time. .

I have been on 12v since I started using Inverter as far back 2012.

You only upgrade when there is need.

Na ontop of the 12v na im the following they:
Freezer
Tv
Iron
Blending
0.5h submersible, loading...
Lightnings
Charging

Na sense them take they live this life.
I don't waste energy. I love simplicity. It is simply simple. Simple!!!

I'm on a 24v system and already planning on how to 48v when I move off-grid entirely.

I think 24v is just a better entry point, though that doesn't mean 12v won't serve too.

Tekenny:
Please can you recommend good brand lifepo4 battery of this size with a fair price?

Cworth sells a 2.5kwh 12v battery for ~400k or so. Grade B cells but will serve for typical home use.

HeavenlyBang:


I'm on a 24v system and already planning on how to 48v when I move off-grid entirely.

I think 24v is just a better entry point, though that doesn't mean 12v won't serve too.



Cworth sells a 2.5kwh 12v battery for ~400k or so. Grade B cells but will serve for typical home use.

Forgot to add that am fully Off-grid 8 months ago with sense . I don't follow trends.

GloryJoyeux:


Hello,

I appreciate the trust — let’s dive into this setup!

1. Battery Backup — 5kWh is Too Small

While you want to rely mainly on solar s, a 5kWh battery won’t cut it for this setup — here’s why:

• Cloud cover is the real issue, not rain. Even a brief moment of thick cloud cover can drastically drop solar output. When that happens, your inverter pulls from the battery to keep the load running. With only 5kWh available, the battery’s Battery Management System (BMS) will likely hit its discharge limit, causing a shutdown to protect itself.
• Cloud cover can last longer than you think. Sometimes, it lingers for an hour or more — even in dry season, where heat itself reduces solar efficiency due to the temperature coefficient (solar s lose efficiency as they get hotter).
• Your battery should match peak load capacity, even if you don’t plan to rely on it often. This ensures uninterrupted power when solar drops momentarily.

Scenario to consider:
If it rains all day, or you lose grid power, will you shut down operations entirely? Likely not. A generator is a fallback, but you can’t assume employees won’t mistakenly run solar-only during that downtime — a larger battery prevents sudden shutdowns.

My Recommendation: Go for a minimum 10-15kWh battery setup to handle peak loads for at least 1-2 hours if solar yield drops.

2. Solar Choice — Stick with Proven Brands

21 s of 720W each sounds powerful — but be cautious. There’s a reason 720W s aren’t mainstream yet. I strongly recommend Jinko 615W s — they’re proven, reliable, and widely tested in real-world conditions.

Let’s compare output:

• 21 × 720W = 15.1kW (on paper)
• 21 × 615W = 12.9kW (Jinko)

However, real-world output is different from STC ratings:

• 15.1kW setup? Realistically expect a base of 12kW peak — and even that might last only an hour on a good day. Average yield will likely be around 9kWh in rainy/cloudy conditions.
• 12.9kW Jinko setup? You’ll likely still get a reliable 9-10kWh average with better stability and longevity. Trust on this

My Recommendation: Stick with proven, high-efficiency s like Jinko 615W for reliability and predictable output.

3. Inverter Size — 20kVA is Sufficient

Your 20kVA inverter (roughly 19kW output) is perfectly sized for your setup — it can handle your 7.5kW oven plus other smaller appliances running simultaneously.

However, let’s rethink your peak load:

• Your oven is 7.5kW, but you’ll likely have lights, fans, and other appliances running too — realistically, you’re looking at an 8kW peak load, not 7.5kW flat.

My Recommendation: Stick with 20kVA, but assume an 8kW peak load to give yourself some breathing room.

4. Buying s from China — Is It Worth It?

Buying directly from a manufacturer in China can be cost-effective — but only if you know what you’re getting. Risks include:

• Unverified output ratings (e.g., that 720W may realistically perform closer to 600W).
• Shipping and import fees could offset the savings.
• Warranty and after-sales may be difficult to claim internationally.

My Recommendation: Unless you’re getting a trusted, proven brand like Jinko, Trina, or Longi — I’d suggest buying locally or from a reputable distributor to ensure warranty coverage and proven output performance. Those brands are even available locally in Nigeria here

Final Setup Recommendation Summary:

• Solar s: 21 × 615W Jinko s (12.9kW total) or more if u have the space and funds (trina longi etc are equally good brands)
• Inverter: 20kVA (19kW) — sufficient for your setup
• Battery Backup: 10-15kWh LiFePO4 battery — ensures stability during cloud cover or short outages such as rainfall
• Peak Load: Plan for 8kW to for other appliances running alongside your oven
• Source: Stick with proven, mainstream s — direct-from-China deals are risky unless it’s a trusted brand

Hello,
As an offshoot of our earlier discussion, I'd like to get your input on a choice I'm about to make. I'm trying to achieve the most with lean resources
I'm seeking to a maximum hourly load of 8kw (p.s this is inclusive of surge power) during peak sunlight and I'm looking at the configuration below:
15 pcs of 720w jinko s
1 15kwh lithium battery
1 10kva inverter.

I have the following questions:
1. Does this seem feasible?
2. Would you recommend the hybrid inverter or the regular one with a separate charge controller (judging by the industrial machine load that will be carried by the system)
3. If you suggest having separate charge controllers, how many would be needed for this system?

AinsSama:


Rough estimate based on your aforementioned loads give or take:

1 40 inches tv, - 100w or less
1 deep freezer, - 150W or less
1 1.5 hp inverter ac - 1.5kw or less
1 industrial fan, - 300w or less
1 normal fan - 50w (can be more or less)
2 laptop - 65W generally (if it's not a gaming laptop or MacBook)
1 decorder - 50-100w
i internet modern - 20w
16 bulbs , the low energy ones - 500w or less

Total - 2.785kw. Aprox 2.8kw

You'll need a 30kwh lithium battery to run the night time loads happily. 15kwh lithium battery will be sufficient if you alternate your 1.5HP AC usage during night time.

A total of 6-10kw solar s will do. That's about 10-15 625/615W s.

Thanks, i bought the growatt 6kw inventer from fouani store

500ah Sukhig lithium batteries available
Price #450,000

Call or WhatsApp me on 09116033581

dollarnaira:


Seems you didn't enjoy 12v during your time. .

I have been on 12v since I started using Inverter as far back 2012.

You only upgrade when there is need.

Na ontop of the 12v na im the following they:
Freezer
Tv
Iron
Blending
0.5h submersible, loading...
Lightnings
Charging

Na sense them take they live this life.
I don't waste energy. I love simplicity. It is simply simple. Simple!!!

You know how to shed your loads, someone who's going into renewable energy wouldn't, the will like to power everything at once.

Gshems:


Baba go buy 1800watt sachet inverter from @linnov. Thats about 70k
Powmr charge controller 100k
Cworth lithium battery 200k or powmr 300k
1 580watt or 400watt jinko .

You should be able to start with this

Baba please help me too o.
I have roughly 1 to 1.2m budgetted for Solar for my music studio. It will power
1. 2 laptops
2. 2 speakers of 150 watts each
3. About 3 or 4 bulbs.
4. Phone charging
(Can a small deep freezer be added to it?)

Please what and what do I need to buy. Will prefer DIY.
Thank you sooo much.

dollarnaira:


Forgot to add that am fully Off-grid 8 months ago with sense . I don't follow trends.

Please with a budget of 1m, how can someone start his solar journey and upgrade with time?

jonescosmos:
So I did a little calculation today. I could not believe that I would be needing to pay NEPA almost 110K daily on Band-A.

I wonder how would have coped with BAND-A Tariff without Solar Energy.

Someone should help me check how much I would have been spending on daily energy needs without solar.

Because it seems I got it wrong.

Monthly usage is 3.27MWh

Which gives an average of 105kwh/day

Going by Band A ₦225/kWh tariff that's roughly ₦23k/ day savings or ₦713k/month. That's some insane energy savings.

Going green is totally worth it.

Preator:
I am planning on moving to a grid tied solar. I currently have circa 16hrs a day from ikeja electric but their timing usually is a problem. My plan is a grid tied inverter

7.5kva felicity hybrid inverter with 120A
15kwh lithium battery also felicity
11 615w jinko solar s(already purchased)

Please help review if this viable. And is stellar mart reliable to buy the inverter and battery from?

My estimated load below


1.5HP Hisense Inverter Air Conditioner
5x Fans:
185L Refrigerator:
145L Freezer:
15x 10w Bulbs
Hisense 65inches 4K TV:

LG 1000w 5.1ch Home Theatre:
multiple 120w Chargers (Phones)
Water Heater x 3

Washing machine:
Dry Iron
Microwave:
PlayStation:

Estimated Total Load
Total Daily Energy: 23.4kWh/day.
Night (8h): ~13.5kWh (AC, fans, fridge/freezer bulbs).
Day (16h): ~9.9kWh (TV, theatre, fridge/freezer, bulbs, chargers, intermittent loads).

estimated Peak Wattage:
Night: ~3,075W (3.075kW).
Day: ~2,964W (2.964kW managed, up to 7,650W unmanaged if all intermittent loads overlap).

I hope you know that "grid tied solar" means you are out putting your excess back to the grid. I belive it not possible in Nigeria yet. I guess you meant you want to run a system with input from mains or grid

KudozInteriors:


Baba please help me too o.
I have roughly 1 to 1.2m budgetted for Solar for my music studio. It will power
1. 2 laptops
2. 2 speakers of 150 watts each
3. About 3 or 4 bulbs.
4. Phone charging
(Can a small deep freezer be added to it?)

Please what and what do I need to buy. Will prefer DIY.
Thank you sooo much.

Please somebody should help me, please.
Thank you so much.

KudozInteriors:


Baba please help me too o.
I have roughly 1 to 1.2m budgetted for Solar for my music studio. It will power
1. 2 laptops
2. 2 speakers of 150 watts each
3. About 3 or 4 bulbs.
4. Phone charging
(Can a small deep freezer be added to it?)

Please what and what do I need to buy. Will prefer DIY.
Thank you sooo much.

Are those sound watts or actual power draw?

Assuming the latter, your speakers are probably drawing like 40w typically. Total power including the freezer would be about ~400w.

Your budget should be sufficient.