poweralert....

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I get the planning ahead aspect in terms of leadshedding (although renewables are never 0, so my understanding was conservative estimates were included, guess I need to read up on this some more), but if renewables were 1.5 GW lower tonight would that not have had an impact, requiring more load curtailment or OCGT usage?
 
Meh It's fiiiiine, 20 stable gw will be more than enough for what's left of South Africa after the winter :)
 
DarkSt0rm said:
Meh It's fiiiiine, 20 stable gw will be more than enough for what's left of South Africa after the winter :)
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The new minister of fire said he will aggressively reduce demand so that plenty.
 
And don't forget the plans... :)

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Parched said:
I get the planning ahead aspect in terms of leadshedding (although renewables are never 0, so my understanding was conservative estimates were included, guess I need to read up on this some more), but if renewables were 1.5 GW lower tonight would that not have had an impact, requiring more load curtailment or OCGT usage?
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In very simple terms, peak demand is at 18:30 and sunset in Cape Town this weekend is around 18:15, so solar photovoltaic production has negligible effect on load shedding stages. If we magically had more pumped storage or battery capacity that might help, but we don't.
 
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So not much hope for a lower stage over the weekend then....Roll on long weekend and stage 4...
 
Gordon_R said:
In very simple terms, peak demand is at 18:30 and sunset in Cape Town this weekend is around 18:15, so solar photovoltaic production has negligible effect on load shedding stages. If we magically had more pumped storage or battery capacity that might help, but we don't.
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Sure, I get that. But renewables also include wind and CSP and totalled 2400MW during last night's peak. So someone raised the question, given how the overall numbers were looking, what the impact would have been if renewables were only 900MW like the other night.
 
Parched said:
Sure, I get that. But renewables also include wind and CSP and totalled 2400MW during last night's peak. So someone raised the question, given how the overall numbers were looking, what the impact would have been if renewables were only 900MW like the other night.
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Would've been the exact same, as stated load shedding isn't based on renewable figures at all, they cannot cull shedding due to higher numbers or lower numbers as they are not even factored into the calculation.
 
Lupus said:
Would've been the exact same, as stated load shedding isn't based on renewable figures at all, they cannot cull shedding due to higher numbers or lower numbers as they are not even factored into the calculation.
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OK, so in terms of balancing the system during evening peak 2400MW vs 900MW renewables has no impact at all, on OCGT usage, changes to load curtailment, etc? Interesting, thanks for the clarification. I would have thought that with coal units dropping off a higher contribution from renewables was a welcome offsetting factor last night, guess I have the wrong idea about how they operate and need to learn more about it.
 
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