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Nairaland Forum / Science/Technology / How Efficient Are Solar Electricity Power Systems? (36245 Views)
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Re: How Efficient Are Solar Electricity Power Systems? by Lanjonath(m): 8:27am On Dec 13, 2016 |
veekid: Funny enough, its very easy to maintain, havevyour installers look at once a year and your good to go. but the initial cost is a bit high. |
Re: How Efficient Are Solar Electricity Power Systems? by durodee(m): 8:34am On Dec 13, 2016 |
I wrote this analysis actually a few months ago to answer a question about using solar setup for an hair saloon or so. I have modified to reflect current market scenario. Pls enjoy!## I will attempt to answer this. I have a business that must have power supply 24/7. This is my 6th year and 10th generator (6 petrol, 4 diesel including two 3.5kva, one 5.5 Lister and the biggest is a 15kva diesel.) About a year ago I installed a 5kva inverter coupled to 4 deep cycle batteries and 1.4kw solar panels. This decision I have not regretted as I will analyse below. First: The CHEAPEST power source in Nigeria is the National grid (Nepa of Old) BUT this is almost always unreliable for business. Secondly: A good business centre should run from 8am to 6pm or even 8pm if in a school area, increasing the fuel use by 50%. Thirdly: For his power need he will have to get a bigger gen set than a 2.8kva!!!! Otherwise the generator will be dead in 3 months carrying that load for 8 hours a day. A 5kva gen is more realistic. Finally: the worth of anything you purchase is more meaningful is considered over a reasonable lifespan. So my calculations will be based over 3 years of usage since the common deep cycle batteries in Nigeria's lifespan is 3 years . Now to calculations: Gen 5kva petrol :130-150,000 Fuel@150/L X15L/dayX300 working days per year X 3 years = 2,025,000 Maintenance cost (oil/servicing/parts)@ 50,000X 3= 150,000 Total = @ 2,325,000 That is 2.3 million to provide NOISY power for 12 hours. //////////////////////////////////////////////// Now to solar - inverter set up that can last for 24 hours or more of heavy usage. 5kva pure sine wave inverter : 200,000 2 X 60amp charge controllers : 200,000 12X 250w Mono solar panels@ 60k: 720,000 8 X 12v 200amp deep cycle batteries : 840,000 Installation costs/ accessories @ 200,000 Total : 2,160,000 That means for the generator person to enjoy 24/7 power over the first 3 years, he will pay 2.3 million X 2 =4.6million compared to solar setup of @ 2.2million with change. Since solar panels can last 25 years or more, the cost benefits keep accumulating yearly. The only component that you need to change as efficiency reduces is the batteries. The ONLY negative of solar - inverter power system is the INITIAL cost of purchase and installation. After that comes the enjoyment!! 6 Likes 1 Share |
Re: How Efficient Are Solar Electricity Power Systems? by NoMoreTrolling: 8:48am On Dec 13, 2016 |
CosmeticChemist: torque is turning force, so it's related but not the same. the high initial current is needed to torque the compressor from it's still starting point. |
Re: How Efficient Are Solar Electricity Power Systems? by NoMoreTrolling: 8:51am On Dec 13, 2016 |
CosmeticChemist: wow, a 50hp motor men, hopefully that motor comes with a datasheet(spec-sheet), that provides the LRA (Locked Rotor Amps) needed for initial torquing. once you have the LRA, you can multiply that by the voltage and power factor ( 0.8 ) to get the appropriate kva gen capacity needed. |
Re: How Efficient Are Solar Electricity Power Systems? by metallisc(m): 9:06am On Dec 13, 2016 |
kingphilip: the guy must have been duped by a quack engineer whose only aim is to make money. The setup he described there shouldn't have cost up to a million (depending on the solar array) |
Re: How Efficient Are Solar Electricity Power Systems? by Nobody: 9:06am On Dec 13, 2016 |
For a Solar system that can power your Self contain upto a 5 bedroom duplex. Email me and get payment plans of up to 30 months. 1 Like
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Re: How Efficient Are Solar Electricity Power Systems? by chris81964(m): 9:07am On Dec 13, 2016 |
Bojc7: We install the Schneider Electric SW and XW+. The one you see in the video is made by Rich Electric in Taiwan. It is the 3 kw Invertek Combi 24V with a 70 amp AC charger. I paid $1500 for it. It is up for sale for N420k. 1 Like
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Re: How Efficient Are Solar Electricity Power Systems? by chris81964(m): 9:09am On Dec 13, 2016 |
frenchwine: Well said @frenchwine. The Kva means nothing. Your storage means the most followed by your PV. J'aime beacoup du vin rouge. |
Re: How Efficient Are Solar Electricity Power Systems? by seunajia: 9:10am On Dec 13, 2016 |
eezomatic: Because I'm at work during the week days, I have my 3W x2 bulbs, ceiling fan (I'm planning on buying a standing one), laptop, phone and modem plugged in all through the night. The same applies weekends except it is used for longer hours, say, 15hours because of public supply. The good thing about this is that it charges on both public supply and solar power. |
Re: How Efficient Are Solar Electricity Power Systems? by NoMoreTrolling: 9:17am On Dec 13, 2016 |
SolnergyPower: There is always an engineering solution to everything. My cousin provides inverter setup in each of the new houses he constructs and the electrical engineer simply wires a fuse/breaker from the battery to the inverter to limit current draw. So if a client decides for instance to run a 1200watt iron on a 1.5kva inverter, the breaker would simply open up and shut the system down. |
Re: How Efficient Are Solar Electricity Power Systems? by NoMoreTrolling: 9:18am On Dec 13, 2016 |
moniker234: very neat installation 1 Like |
Re: How Efficient Are Solar Electricity Power Systems? by Bojc7: 9:30am On Dec 13, 2016 |
chris81964: thanks 1 Like |
Re: How Efficient Are Solar Electricity Power Systems? by Kingsley1000(m): 10:03am On Dec 13, 2016 |
Mine is higher than 200watts,bought it 70k,only for tv,led bulb,fan,charge laptop and phones Mightyraw: |
Re: How Efficient Are Solar Electricity Power Systems? by battleaxe: 10:04am On Dec 13, 2016 |
bettercreature: Uncle, 1700 for 547 days will take you closer to 1m. Secondly, how deeply were you discharging your batteries? Till the low alarm sound S or it switched off? Also, while the 510k may have been a recurring cost, the costs for the inverter, solar panels, charge controller et al, were not recurring. Based on your own analysis above( even with an assumption that the batteries were drained to 0%), solar power still works out cheaper. |
Re: How Efficient Are Solar Electricity Power Systems? by hahn(m): 10:11am On Dec 13, 2016 |
Adminisher: I think I should have included "to acquire" |
Re: How Efficient Are Solar Electricity Power Systems? by eezomatic: 10:20am On Dec 13, 2016 |
Thank you sir seunajia: |
Re: How Efficient Are Solar Electricity Power Systems? by battleaxe: 10:21am On Dec 13, 2016 |
oloriIT: Do you have to place your refrigerator and iron outside in order to catch the sunlight? Or are these DC equipment? |
Re: How Efficient Are Solar Electricity Power Systems? by Mightyraw(m): 10:43am On Dec 13, 2016 |
Kingsley1000:Juss one panel shey? |
Re: How Efficient Are Solar Electricity Power Systems? by darknetcom: 10:43am On Dec 13, 2016 |
very low output.. forget heavy industrialization with only solar.. solar is not an option for a nation of 180million.... for small nations of 5million its possible... but for nigeria its a very bad idea... one panel for 70000naira..calculate how many you would need.. only the panels is useless..the sun dont shine everytime...you need batteries to store energie too.. costs will explode..solar fridge..solar frying pan..solar iron.. with which money?? |
Re: How Efficient Are Solar Electricity Power Systems? by Mightyraw(m): 10:47am On Dec 13, 2016 |
seunajia:Is the solar supplying the aouse directly, or charging the inverter battery And when did u do it Thinga arr more xpensive nw |
Re: How Efficient Are Solar Electricity Power Systems? by kingphilip(m): 10:58am On Dec 13, 2016 |
battleaxe:not also including the cost he'd use in servicing it Even if it's once in three months that's like 6 times within the same period |
Re: How Efficient Are Solar Electricity Power Systems? by Nobody: 11:00am On Dec 13, 2016 |
NoMoreTrolling: Thank You. And by the way, thats a 1.5Kw system. It consists: 6 units of 250w panels 4 units of 12V 200AH batteries. 1 unit of 60Amps 48v charge controller 1 unit of 3Kw (3.75KVA) inverter. With accessories (wirings,breakers,Knife switch, trunking, battery rack, roof rack et al) 1 Like |
Re: How Efficient Are Solar Electricity Power Systems? by Nick4life: 11:41am On Dec 13, 2016 |
How much for a solar energy that will power my laptop and charge like 6 to 7 phones and my TV (student talking)[color=#006600][/color] |
Re: How Efficient Are Solar Electricity Power Systems? by iamwrong(m): 11:47am On Dec 13, 2016 |
wellmax: The reason why most solar street lights are not working and don't last is as a result of poor installation processes, lack of strict adherence to maintenance when due and substandard or crooked applications or use of substandard accessories and batteries. also for the shop owner, that may be due to the factors mentioned above, especially when the battery is faulty or tampered, the whole solar system is also tampered or faulty. the lifespan of a solar system is meant to be 8Years atleast. The Nigerian factors such as corruption, unfriendly govt policies, hostile business climate, as well as the cabals in the Generator Business and oil and gas industry etc has made it abit difficult for the solar industry to grow massively, made it expensive and be accepted fully by the average Nigerian. But I believe with time and persistent efforts the solar sector will grow and all the challenges being experienced will be a thing of the past. It's another multi-Billion dollar industry waiting to explode in Nigeria and Africa as a whole. 1 Like |
Re: How Efficient Are Solar Electricity Power Systems? by SolnergyPower: 12:16pm On Dec 13, 2016 |
Heavy industrialisation will require what is called a solar farm. That's a multi-billion project. Please be reminded that there are smaller solar farms already running in Nigeria, most of those ones are targeted at rural areas and villages. It may take time, but as soon as we start manufacturing the solar components, it'll be readily affordable. darknetcom: |
Re: How Efficient Are Solar Electricity Power Systems? by Nobody: 12:25pm On Dec 13, 2016 |
chris81964:Le vin rouge est bon, pour le cœur, pour la gaieté, pour l'amour. |
Re: How Efficient Are Solar Electricity Power Systems? by darknetcom: 12:37pm On Dec 13, 2016 |
SolnergyPower: this things need space..you would cover the ol place for panels instead of farms... its a rubbish idea .... forget all those sissy wuse greenpeace rubbish europeans.. ... do you want to catch up or not .... disziplin yourselfes and go nuclear!!!... |
Re: How Efficient Are Solar Electricity Power Systems? by SolnergyPower: 12:44pm On Dec 13, 2016 |
We've enough land to go around. Please don't forget, this will also create jobs. On a lighter note, I admire your disdain for solar power...but I'm sure you'll also be a good crusader for same as soon as you're convinced. darknetcom: |
Re: How Efficient Are Solar Electricity Power Systems? by darknetcom: 12:46pm On Dec 13, 2016 |
SolnergyPower: me??..solar... kiiii.. .. bwahahahahaha...,,... good one....ohhh my..
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Re: How Efficient Are Solar Electricity Power Systems? by SolnergyPower: 12:49pm On Dec 13, 2016 |
If time is on your side, please tell us the exact issue(s) you've with solar power. This will educate quite a number of us. darknetcom: |
Re: How Efficient Are Solar Electricity Power Systems? by darknetcom: 12:50pm On Dec 13, 2016 |
solar power plant is possible but surely not with panels.. its clean..thats for sure..but at the end a real solarpower plant will cost more than a nuclear plant.. you surpose to know that as an solar person... |
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