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Lupus said:
It's not counted in the overall system for when a stage of load shedding is called. They can't say oh we can go to stage 3 now cause of renewables.
Mainly as there is no certain number to base that on.
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Why not? They have 3GW of pumped storage to smooth it out.
 
Lupus said:
Over a 24 hour period yes, remember solar peak hours. There are only 5.6 in JHB, the rest of the time I'm on batteries or on Eskom.
So when it comes to renewables you've got to factor in that sure at peak you'll maybe get 540MW but you'll average out at 90 to 140MW.
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The projects that AlphaJohn linked to include storage though, so it's not just pure solar feeding directly to the grid.
 
AlphaJohn said:
There are Solar projects all over the place ie Kenhardt's 540MW, REIPPPP's 270MW and ACWA's 100MW CSP
Among others.
www.solarfeeds.com

15 Biggest Solar Projects in South Africa

South Africa is a leader in the development of renewable energy. A wealth of renewable energy resources such as solar photovoltaic (PV) and concentrated
www.solarfeeds.com
Problem was that up to last year there was a 100MW limit:

New ones will take time so we will likely only see fruit only from end of next year or so on.
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Thanks for those links, interesting reads for sure.

When I said no power plants being built, i mean coal/nuclear/etc. not renewables, I didn't make that clear, sorry.
 
richjdavies said:
Agree with that. But I don't think any reasonable expert in power would make the MW Vs MWh mistake that plagues the media.

The baseload stuff is nonsense though. Old thinking.
The EAF of Eskoms fleet is lower than solar right now :) but with solar you plan for it only being full sun 6 hours a day, you don't plan for half your coal fleet to be down.

So sun and wind being up and down is plannable and manageable through diversification -- i.e. turbines and panels all over what should be 2 or 3 time zones. Wonderful "base load" tripping is not plannable and is exactly why we have load shedding.

Ps IPPs should not be mixed with Feedin tariffs. IPPs are procured by Eskom on long fixed contracts. They are charging like 50c/KWh now!
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The EAF of the coal fleet is lower then 24% didn't know that happened?
Also you cannot diversify a grid like you're thinking, hell freaking Europe is learning this lesson, you do need a base load as when the wind don't blow and the sun don't shine something has to take the slack and no batteries aren't the answer as those are storage means not generation a couple of cloudy days or wind free days and they are depleted.
You also cannot reliable plan for 6 sun hours of day, weather is unpredictable, we can come close probably with 75% but the variable between is too great. So you cannot reliably say ok we are going to get X from the solar, we can say we expect to get X and if we don't we better hope there is backup power to cover it, which in SA we don't have all the time.
 
richjdavies said:
And also why not you know... Use the peaker plants to do peaker stuff and run all day on renewables that only cost R0.50/kWh!
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You can't run all day on renewables, without some form of storage and being able to recharge said storage.
 
1am7h30n3 said:
The projects that AlphaJohn linked to include storage though, so it's not just pure solar feeding directly to the grid.
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Storage for a short period of time or to smooth the grid, it won't last an entire night or even a few days of cloud.
 
wingnut771 said:
then loadshedding instead of it all the time day in and day out.
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As stated, you cannot base the load shedding status on renewables, it's too finicky. We need 4 times what we have to even consider it and even then, we don't have the backup to even sort that out.
We're basically screwed, I mean if a powerhouse like Germany is resorting to burning more coal and they have 65GW installed of it and they are struggling

1674634019572.png
 
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Lupus said:
As stated, you cannot base the load shedding status on renewables, it's too finicky. We need 4 times what we have to even consider it and even then, we don't have the backup to even sort that out.
We're basically screwed, I mean if a powerhouse like Germany is resorting to burning more coal and they have 65GW installed of it and they are struggling

View attachment 1463537
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They're idiots for shutting down their nukes.
 
Lupus said:
As stated, you cannot base the load shedding status on renewables, it's too finicky. We need 4 times what we have to even consider it and even then, we don't have the backup to even sort that out.
We're basically screwed, I mean if a powerhouse like Germany is resorting to burning more coal and they have 65GW installed of it and they are struggling

View attachment 1463537
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How is it any different to the 5 minute warning Eskom give us now?

Pumped storage lasts 3 days anyway so we will have 3 days notice.
 
wingnut771 said:
How is it any different to the 5 minute warning Eskom give us now?

Pumped storage lasts 3 days anyway so we will have 3 days notice.
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We already have an incredibly fragile system, adding on unreliable power on an unreliable grid? Isn't going to fix issues.
 
Lupus said:
We already have an incredibly fragile system, adding on unreliable power on an unreliable grid? Isn't going to fix issues.
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I get what you saying. My problem is this: even something, some time, is better than nothing and if it takes 10-12 years for Nuclear power from conception. In SA we probably looking at 20 :D

I would rather have some power than zip for the next 10+ years.
 
AlphaJohn said:
I get what you saying. My problem is this: even something, some time, is better than nothing and if it takes 10-12 years for Nuclear power from conception. In SA we probably looking at 20 :D

I would rather have some power than zip for the next 10+ years.
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The best time to start nuclear is 10 years ago, the next best is now. The problem is everyone is stumbling around with their dicks in their hands instead of actually doing something.
Renewables will also increase prices even more
 
Lupus said:
We already have an incredibly fragile system, adding on unreliable power on an unreliable grid? Isn't going to fix issues.
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It will take 5 years to build 30GW of solar, liquid metal battery storage and CCGT's as some backup then we can have loadshedding only when the whole country is covered in cloud.
 
Lupus said:
The best time to start nuclear is 10 years ago, the next best is now. The problem is everyone is stumbling around with their dicks in their hands instead of actually doing something.
Renewables will also increase prices even more
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Who's going to put their cock on the block and pay for and build nuclear with this clown show running the place?
 
Lupus said:
The best time to start nuclear is 10 years ago, the next best is now. The problem is everyone is stumbling around with their dicks in their hands instead of actually doing something.
Renewables will also increase prices even more
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Don't you mean 20?
Kusile started in 2011... and yeah well need I say more :p

Its not even Nuclear.
 
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