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R13... said:
We have so little PV capacity for such a sun rich country. PV ought to be pushing 5/10GW instead of the current 2GW installed.
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To get that 5/10GW we'd need to have 20 to 40GW installed. As currently we have almost 3GW installed and we may hit 2GW.
I think wind is also sitting at 5GW and that is only peaking at 2GW as well
 
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Lupus said:
To get that 5/10GW we'd need to have 20 to 40GW installed. As currently we have almost 3GW installed and we may hit 2GW.
I think wind is also sitting at 5GW and that is only peaking at 2GW as well
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How do you come to that conclusion when 3GW installed produce 2GW? Proof that we shouldn't waste our time with wind, focus on PV and upgrade the NC grid.
 
wingnut771 said:
How do you come to that conclusion when 3GW installed produce 2GW? Proof that we shouldn't waste our time with wind, focus on PV and upgrade the NC grid.
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Notice how I said may hit 2GW... Doesn't mean we do and do it often just look the graph and show me where we have hit it for more than an hour somewhere, an average seems to be around 1.2GW, which isn't bad at 40% of installed capacity, which is probably doing better than our wind. So to get 5GW more consistently you'd need to have 20GW installed
 
CapacityFactor2020-1200x675.png


Just so we can see the Installed Generation Capacity vs it's actual possible output over it's lifespan. So if you have 1800MW installed nuclear you'll get 1665MW, if you have 1800MW of solar installed you'll get 466MW on average.
So in order to get the same as the Nuclear plant you'd have to have 7200MW of installed capacity, that would on average give you 1800MW. For wind you'd need 5400MW of installed capacity to make up the 1800MW.
 
Lupus said:
CapacityFactor2020-1200x675.png


Just so we can see the Installed Generation Capacity vs it's actual possible output over it's lifespan. So if you have 1800MW installed nuclear you'll get 1665MW, if you have 1800MW of solar installed you'll get 466MW on average.
So in order to get the same as the Nuclear plant you'd have to have 7200MW of installed capacity, that would on average give you 1800MW. For wind you'd need 5400MW of installed capacity to make up the 1800MW.
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Let's get nuclear out of the equation here for this country, it will never happen, we don't have the capacity to pay for it nor run it. Imagine 20GW of nuclear with BEE mixed into it? Koeberg are losing staff all the time, eventually they will have no one with any experience and then what?

How much of that 24.9% is because of a lack of storage? How much of those stats come from northern hemisphere countries with no sun? Perth doesn't seem to have a lack of solar problem but exactly the opposite with their residential PV, they have too much power during the day overloading their local grids. Introduce grid storage and the problem goes away.

Bring on the liquid metal battery.
 
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Lupus said:
To get that 5/10GW we'd need to have 20 to 40GW installed. As currently we have almost 3GW installed and we may hit 2GW.
I think wind is also sitting at 5GW and that is only peaking at 2GW as well
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My cals show we have 2.2GW installed and the most produced seems to be around 1.7GW.
 
Is location not a way of guaranteeing higher solar production? Anyone ever see any clouds in the vast Karoo area?

Then again, who knows where modern weather patterns are heading..
 
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wingnut771 said:
Let's get nuclear out of the equation here for this country, it will never happen, we don't have the capacity to pay for it nor run it. Imagine 20GW of nuclear with BEE mixed into it? Koeberg are losing staff all the time, eventually they will have no one with any experience and then what?
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100% this. Cadre deployment + nuclear power station = Chernobyl/Fukushima V2 - no matter the safeties installed, cadres will screw things up, and they will not be held responsible for the environmental mess thus created.
 
R13... said:
My cals show we have 2.2GW installed and the most produced seems to be around 1.7GW.
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Yeah figures in SA are sketchy, lets work on 2.2 to 2.3 for safety could be more now. Most produced has hit 1.9 for an hour :-)
 
wingnut771 said:
Let's get nuclear out of the equation here for this country, it will never happen, we don't have the capacity to pay for it nor run it. Imagine 20GW of nuclear with BEE mixed into it? Koeberg are losing staff all the time, eventually they will have no one with any experience and then what?

How much of that 24.9% is because of a lack of storage? How much of those stats come from northern hemisphere countries with no sun? Perth doesn't seem to have a lack of solar problem but exactly the opposite with their residential PV, they have too much power during the day overloading their local grids. Introduce grid storage and the problem goes away.

Bring on the liquid metal battery.
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Well that is the biggest issue, the 24.9% is exactly due to lack of storage, remember solar is use it or lose it basis, if you don't use it, you've lost it. Doesn't matter if you can generate 35GW at 1pm, if no one is using it you've lost it.
Storage at the moment is pitiful for the amounts needed and the costs you may as well build nuclear, we need to look at SMRs vs this so called "renewables". Only once we can guarantee base can you start looking at "cleaner" solutions.
 
Lupus said:
Storage at the moment is pitiful for the amounts needed and the costs you may as well build nuclear, we need to look at SMRs vs this so called "renewables". Only once we can guarantee base can you start looking at "cleaner" solutions.
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Doesn't help the nuclear safety concerns.
But is storage really so important? It's a bit like leaving the apple that fell off the tree to rot, it's just natural loss so not waste. If enough is produced for peak what harm in some of it not always being used, there's no cost to leave it connected as well.
 
Brian_G said:
Doesn't help the nuclear safety concerns.
But is storage really so important? It's a bit like leaving the apple that fell off the tree to rot, it's just natural loss so not waste. If enough is produced for peak what harm in some of it not always being used, there's no cost to leave it connected as well.
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Doesn't help at 5pm when power is actually needed, it also can cause issues on the grid if there is intermittently high generation that isn't being used.
So if you've got 35GW installed but you need power at 5pm? How does that 35GW help?
What nuclear safety concerns? The myths spread by big oil?
 
Lupus said:
Doesn't help at 5pm when power is actually needed, it also can cause issues on the grid if there is intermittently high generation that isn't being used.
So if you've got 35GW installed but you need power at 5pm? How does that 35GW help?
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Sure, storage is needed for evening use.
For daytime extra, don't they just bleed the excess to earth or something like that?
 
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