Focused Load-Shedding Solution Saves Money

Harmonic said:
Geez. At 2l per hour and 4 hours load shedding a day that's a nice R65.5k in fuel costs over a year
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Not to mention servicing every 50 to 80 hours, I mean my little 2.8kva was 1l per hour, my little 900w Ryobi was like 0.3l per an hour. My son's dojo has a big 7.5kva and it's 3l per hour.
 
Harmonic said:
And 3l of petrol per day will set you back R25k a year, destroy your ears and damage your dignity. Idiot.
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I disagree with your costs, and with calling me an idiot. I could easily retort with something unsavoury.

When it comes to the bit in bold you'll have to elucidate.
 
pinball wizard said:
I disagree with your costs, and with calling me an idiot. I could easily retort with something unsavoury.

When it comes to the bit in bold you'll have to elucidate.
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ok so what are your costs? I mean how much petrol are you burning?
 
Neuk_ said:
And yet, here we are in a thread where the OP is justifying not spending R100k+ :D
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Don't think there's a contradiction? I'm backing this part of the OP's point.

AchmatK said:
There's no reason to conjure up anything to validate spending R100k+ when the stats speaks for themselves.

41MWh is over R100k not going to coct at an average price of R2.50/kWh.
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Our resident IPP weighs in. This is what I'm saying, if you spend a lot of money you are bound to have figures to back yourself up after the fact.

Lupus said:
Yeah until the 2 hour shed becomes 12 to 50 hours due to faults on the local substation, then the panels are a god send.
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As I said, there's nothing stopping me and others with sub-R20k systems from slapping a couple of panels up to keep the ~1 kWh topped up, the fridge cold, etc.

Yet solar panels only start to seem to form an essential part of the argument when you've already sunk a lot more money on the inverter and battery - but why? They generate the same R per kWh to offset your bill either way.
 
pinball wizard said:
I disagree with your costs, and with calling me an idiot. I could easily retort with something unsavoury.

When it comes to the bit in bold you'll have to elucidate.
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Don't call people losers then get all niffy when you're called an idiot. Buck up snowflake. Pretty straight forward. 3 litres * 365 days * R22.43 per litre
 
Tomtomtom said:
Don't think there's a contradiction? I'm backing this part of the OP's point.



Our resident IPP weighs in. This is what I'm saying, if you spend a lot of money you are bound to have figures to back yourself up after the fact.



As I said, there's nothing stopping me and others with sub-R20k systems from slapping a couple of panels up to keep the ~1 kWh topped up, the fridge cold, etc.

Point is the solar panels only start to seem essential when you've already sunk a lot more money on the inverter and battery - but why? They generate the same R per kWh to offset your bill either way.
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The over 1000 savings a month help out as well
 
leon.davibe said:
30k for 1.5kwh

While a 3 000 watt pure sine wave inverter and 2.5kwh battery power could be had for about 20k

Now you would have enough spare capacity , to heat up a meal in the micro, have a cup of coffee while watching a movie

As long as the power stations are LFP it is ok to each his own

If not LFP smaller battery will see you use. About a cycle a day and and 3 years down the line the li-ion batteries will lose 20% capacity if you need full capacity to pull through a shedding now you can't , if doing more than one shedding a day time shrinks
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  1. I agree. The unit cost (Rand/kWh) is more expensive with my fully decentralized solution.
  2. However, I prefer the modularity and the isolation per power station that my architecture provides. What happens at one power station does not affect the others. If I watch a lot of TV during 4 hours of load shedding and pulls down the "entertainment" power station, it does not impact my internet power station or my home office power station. If one blows, the others remain unaffected. If one degrades faster than the other, the others are unaffected thereby.
  3. The modular solution makes no change to my DB.
  4. It is portable. When I go on holiday, I can take with me one of these power stations. Voila!
 
Harmonic said:
Don't call people losers then get all niffy when you're called an idiot. Buck up snowflake. Pretty straight forward. 3 litres * 365 days * R22.43 per litre
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**** you, wanker. Explain to me the bit in bold yet? Or did elucidate trip you up?
 
jpbarnard2019 said:
Show me that offer, please. A 5kVA Diesel generator costs at least R20k.
And then we have the running cost of R23 per liter x 1.6 litres per hour. Nasty.
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a) I'm not your personal shopper.
b) Where do you okes live that you have so much loadshedding that requires so much use of alternate power? I get 2 hour slots, usually once, maybe twice a day. Why would I need to run my generator for that?
 
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pinball wizard said:
a) I'm not your personal shopper.
b) Where do you okes live that you have so much loadshedding that requires so much use of alternate power? I get 2 hour slots, usually once, maybe twice a day. Why would I need to run my generator for that?
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a) Stop being a dick
b) South Africa, with people working from home they require power, so you may only run your generator every once in awhile but others require it for work. Not everyone can go oh frak it, so even if a person just ran it for work purposes, stage 6 will effect them twice during a working day, so that's 6 hours they'd more then likely need to run their generator.
c) You're also touting the generator as the best solution, but you're not even utilizing it that much. Perhaps sit down, think about other peoples situations and relax. Not sure whats happened to you in the last couple of months you've become a lot more aggressive. Perhaps move out the East Rand? I hear Durban gets even less shedding.
 
Lupus said:
a) Stop being a dick
b) South Africa, with people working from home they require power, so you may only run your generator every once in awhile but others require it for work. Not everyone can go oh frak it, so even if a person just ran it for work purposes, stage 6 will effect them twice during a working day, so that's 6 hours they'd more then likely need to run their generator.
c) You're also touting the generator as the best solution, but you're not even utilizing it that much. Perhaps sit down, think about other peoples situations and relax. Not sure whats happened to you in the last couple of months you've become a lot more aggressive. Perhaps move out the East Rand? I hear Durban gets even less shedding.
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Lupus said:
b) South Africa, with people working from home they require power, so you may only run your generator every once in awhile but others require it for work.
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But I work from home. My laptop battery last 6 hours, and the ups battery thingies from geewiz keep the internet up for over 8 hours. Okes needn't get so testy because they didn't plan ahead.
 
pinball wizard said:
But I work from home. My laptop battery last 6 hours, and the ups battery thingies from geewiz keep the internet up for over 8 hours. Okes needn't get so testy because they didn't plan ahead.
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People are going to get testy, we live in a fraked up place :-). Some decided to go for the solar solution over the smelly generator solution (I mean you do live in the East, that place has like Kelvin and the airport :-P)
 
leon.davibe said:
With the way the electricity prices are increasing going solar becomes a better prospect by each passing year

each home/home office has their own requirements

for some the 1kw won't cut it

ie we have a home office pc's +laser etc see us pull 1.3kw if all the pc's are running

so already to pull through a 4hrs we need the 5kwh+ battery at least

if already having to layout for that size battery , to some it might seem like sunk cost syndrome

if already in with the cost of inverter and battery spending some more money on panels
actually makes good economic sense


Now yes i am nowhere near 100k

Options

Be out of pocket of 40-60k

or layout another R40k and after 7 years be out of pocket for the grand total of R0

and be self sufficient electricity wise

those that have the cash to go that route it's a no brainer, i didn't have the cash ,started small been expanding over the last 3years

only started adding (4) panels recently (one month now with panels R500 savings on electricity)
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In the ideal world of large homes with large roofs that take sufficient surface area of solar panels, one can become largely self-sufficient (assuming the stove and geyser remain on the grid, as in most solutions). In terms of capital cost, a 7.5 kVA solar solution would be way over R100k. The inverter and a sufficient, high quality battery capacity to sustain 4 hours of load shedding at night (no sun, no solar power) would cost almost R100k. Add to that sufficient solar panels to charge the battery to 100% during a single sunny day, and you can add another R40k, I would say.
Return on investment (break even on capital expenditure) would take at least 8 years, assuming no maintenance or replacement costs in that period, at present ESKOM rates for a monthly household consumption of about 1000-1500 kWh.
But many of us, like I, do not live in the ideal world of large homes with large roof area. For us, go solar is not really as practical or cost effective.
 
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