₦airaland Forum

purplekayc: Like how much wil these panels cost ,i see a lot of it@computer village when am coming in from along ,there seems to b a seller there ,how many panels do i need to power my tv 21",home theatre,one chest size frige,lappy &desktop?

abunafiu: wonderful analysis. In addition to 20 pieces of 200w panels, our brother also needs a large battery bank considering number of days autonomy and 50% d.o.d. All these equals to close or above a million naira. My own example is assuming it cost 60k per panel, 20*60 is 1.2million. 60amps Charge controller 130k. Battery bank of 8 pieces of 200ah is 8*50k is 400k . 12mm cable depends on ur site, asumme 40k. 24v inverter is 40k. Now your total cost 1.8million approx. Note these prices are assumptions but current prices are within range. All materials listed are for standard installation although it excludes some finishing stuffs 2 beautify d installation.The good news now is that u can buy 4 panels @240k, charge controller @130k, cable @40k. 4 batt @200k and then 24v inverter @40k. Total is 850k. Then you add the remaining panels and batteries as u have more money. Now mr excel you see why you need to know what u want and why u want it. Guess u have 2 drop the fridge and other heavy stuffs and start gradually and see how it goes. DONT BE SUPRISED YOU EVENTUALLY MAY NOT NEED ALL THOSE PANELS AND BATTs. Once you start gradually bearing in mind ur total cost, your needs may be automaticaly adjusted due 2 first hand experience.

TotalGreen: Brothers pls make i help @exxell, i think the group really would like u to understand what you are getting into thats why "i think or guess" the dont want to make it so easy.

Let me see how i can explain it then recommend to you from your appliance listing.

Imagine you have 1000Litre GP tank, then u have borehole that can pump at 10litres per hour - meaning it will take 100hrs to feel up the tank if no water is going out.

if you then increase you borehole capacity to 50litres per hour, u will then fill up in 20hrs - which is always what we like, the faster the better, but remember it cost money

lets talk of draining the tank, assuming we only have a 10litre per hour borehole - lets say we have 10 family members in the house with different drinking capacity, 4 members @ 10 litres per hr, 6 @ 5 litres per hr.

assuming in one day u can only pump for 10hrs meaning u cant fill up the tank, u would have filled up only 100litres in one day.

if all the members drink for only 1 hr cumulatively, the would have consumed (4x10)+(6*5)= 70 litres great! meaning thats enough for the house we still have 30litres left in the tank - hurray

what if we have really big house members like 4 members @ 50 litres per hr, 6 @ 20 litres per hr. so in one hour they would need (4x50)+(6*20)= 320 litres, our tank has only 100 litres - Problem

so we need to pay for a bigger borehole pumb that can fill up to about 400litres in 10hrs for that day, so we need a 40litres per hr pump.

so in essence your gp tank is battery, you borehole is the solar panels ur members are the appliance in your house.

lets do a rough estimate, pls guys correct me where i stray off


21 inches LG tv- 200w
LG Home theater with tall boys- 100w
Royal crown fridge - 200w
1 flourescent- 40w
5 20 watts energy bulbs- 100w
1 standing fan- 50w
1 ceiling fan- 50w
1 laptop - 50
1 sattelite receiver- 50
3 phone chargers - 20
total about 900w

lets assume u use them 5hrs a day, so you need battery capacity that will drain at 900/24 = 37.5amps per hr(i assume the run at the same time and you said you have a 24volt system)

since you are pulling 37.5 for 5hrs meaning battery required is (37.5x5)=187.5

from the above i can say u need like 2kva inverter with 200amps battery

now for the solar side, assuming 5hrs of sun, since u are draining at 37.5amps per hour, you will need to be charging at 40amps per hour(expensive borehole) u will need aprox 20 x 200watts 24v panels - this is where people run away from solar, thats the nail on the head for u.

but the great part of it is like what the other members have said, start slowly.

Good Morning

tonyzaks: thx a million tyms

Osama10: ^^^^

How much are your solar panels?

bjims: i have a 2.5kva 48v inverter newly installed in my house and the most powerful load on it is a small fridge.which size of generator should i buy to conveniently charge it.

thanks

tonyzaks: good day every1. i've a question; would it be appropriate to pair an external battery charger with an inverter to have a given amp.
my inverter has 10 amp charger and there is an 8 amp battery charger, can i mix the two simultaneously in order to charge my battery bank?
over and out.

tonyzaks: good day every1. i've a question; would it be appropriate to pair an external battery charger with an inverter to have a given amp.
my inverter has 10 amp charger and there is an 8 amp battery charger, can i mix the two simultaneously in order to charge my battery bank?
over and out.

bodejohn: You need to avoid rushing into solar power if you do not want to be frustrated and join the league of Nigerians who think solar power is a fraud.

bodejohn: You need to avoid rushing into solar power if you do not want to be frustrated and join the league of Nigerians who think solar power is a fraud.

bodejohn: Or else?....

exxell: Please, I have a 2kva 24v inverter and
sukam 200 amp battries x 2. Please, can it
charge with Solar? Which ones should I go for? How many solar panels do I need and what size? Whats de bill? A guru Reply ASAP!

dimdim001: What's the link to the solar thread

dimdim001: Enlighten us more on the one you use...like what is the watt/kva, what & what does it carry, how long does it stay on, how long does it take to charge, how much you got it...I intend to eventually go the solar way, & use it side by side with my inverter, this one that PHCN is increasing their so called maintenance fee

idsolar: Truly solar powered home sweet jo. kai i de enjoy mine in d north. i shall soon do an upgrade. no wonder George D de smile always

fikfik: i agree 100%.

uncle G et al, what are your thoughts on mixing different panel manufacturers? I'm trying to buy my panels but getting mixed prices and views about effectiveness. Joy Solar is cheapest; suntech is 10k more expensive and solarworld is almost 25k more expensive. I havent even mentioned the almighty SHARP panels. I like good deals as much as the next bloke, but is joy solar really that much inefficient as the more expensive panels?

Also, Uncle George mentioned that i can use 45A MPPT; but 250 x 12 = 3000 watts and 3000/48V = 62.5 amps. how is it possible I can still use 45A for this setup? (I prefer 45 amps anyways due to costs, if i need to expand i can get another one, but how is it mathematically possible)

kibukila: Thanks for all your wonderful response,I am planning to replace the battery,can I go for Ritar 100AH or there is a better brand than this?

bodejohn: Na Chinese controllers me dey use o, if you no mind.

bodejohn: Na Chinese controllers me dey use o, if you no mind.

bodejohn: The only data i need from the panels are the wattage and the Vmp which i already know and wouldn't need to climb the roof to check anytime soon. The current ratings are almost irrelevant because of the MPPT controller I am using. The reason i have 5 panels in series is because my charge controller requires a minimum of 65v to work properly with my 48V battery bank. If you need these figures for any other reason or comparison, i can oblige you when i have some more time by taking the snapshot and uploading it.

fikfik: Uncle George, where do you get your suntech from or joy panel? can i use a 45amp MPPT for 12 250Watt panels?

bodejohn: Oops, I didn't know you require that much details. It is however not a new installtion, the panels are already on the roof and I am not sure of when I will have time to check those parameters you require.