poweralert....

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Brian_G said:
Something I don't get - how does the whole work structure during the day use less than simple family life at night. Hasn't been cold in most places for days.
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I don't think they do use less. It's that Eskom want to keep the economy going and uses the expensive diesel during the day. At night it's just the common folk affected, so they turn off the lights a bit.
 
Splinter said:
I don't think they do use less. It's that Eskom want to keep the economy going and uses the expensive diesel during the day. At night it's just the common folk affected, so they turn off the lights a bit.
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That I could accept. Not their lies though..
 
Splinter said:
I don't think they do use less. It's that Eskom want to keep the economy going and uses the expensive diesel during the day. At night it's just the common folk affected, so they turn off the lights a bit.
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They do use less... You'll be surprised how much a bump up peak power would be, sometimes 3 to 5GW.
 
AlphaJohn said:
If your really interested Google Duck Curve and the problem catering for it, its an international problem not so yeah SA not alone.
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Okay, that's interesting and makes much sense. But is there really that much use of renewables in backwards SA, are our facts real?

There's so many issues with Eskom that have been questioned in these threads, hard to believe much at all. Maybe this CEO is trying though.
 
AlphaJohn said:
If your really interested Google Duck Curve and the problem catering for it, its an international problem not so yeah SA not alone.

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It's an international problem because everywhere else is grid-tied only (no batteries, because batteries are expensive). Thankfully, we don't have that issue in RSA (because grid tied doesn't work during loadshitting, we need batteries as we can't rely on the grid). If NERSA let us feed in like our international cousins, we would use our battery storage during expensive duck curve peak time, then recharge late at night or with solar the next day. Take it a step further and take tax off LFP batteries, offer incentives like free smart meter, no hoops to jump through and our problems will be gone very quickly.

I would love to be a net power producer instead of being forced into being a net power consumer.
 
Brian_G said:
Okay, that's interesting and makes much sense. But is there really that much use of renewables in backwards SA, are our facts real?

There's so many issues with Eskom that have been questioned in these threads, hard to believe much at all. Maybe this CEO is trying though.
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Have you flown over JHB recently?
Because of Eskom price hikes and load shedding, its stupid if a company doesn't add solar.
 
wingnut771 said:
It's an international problem because everywhere else is grid-tied only (no batteries, because batteries are expensive). Thankfully, we don't have that issue in RSA (because grid tied doesn't work during loadshitting, we need batteries as we can't rely on the grid). If NERSA let us feed in like our international cousins, we would use our battery storage during expensive duck curve peak time, then recharge late at night or with solar the next day. Take it a step further and take tax off LFP batteries, offer incentives like free smart meter, no hoops to jump through and our problems will be gone very quickly.

I would love to be a net power producer instead of being forced into being a net power consumer.
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Home users go for batteries sure, companies doesn't. Ford, Mall of Africa, Medicare, Makro's and so on all use solar to subsidize daily use, not to store all production. Sure some might store enough for 2 hours but batteries are expensive so companies not gonna store what they don't use.
 
AlphaJohn said:
If your really interested Google Duck Curve and the problem catering for it, its an international problem not so yeah SA not alone.
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Yeah I know the duck curve :-). it's why I argue against the renewable guys.
 
AlphaJohn said:
Home users go for batteries sure, companies doesn't. Ford, Mall of Africa, Medicare, Makro's and so on all use solar to subsidize daily use, not to store all production. Sure some might store enough for 2 hours but batteries are expensive so companies not gonna store what they don't use.
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because they're not allowed to. Thanks NERSA.
 
AlphaJohn said:
Home users go for batteries sure, companies doesn't. Ford, Mall of Africa, Medicare, Makro's and so on all use solar to subsidize daily use, not to store all production. Sure some might store enough for 2 hours but batteries are expensive so companies not gonna store what they don't use.
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A lot of those places that went solar to help out with their pricing had to be grid tied due to the 1MW limited placed as well. The Makros, Randpark Ridge Shopping centers and stuff could easily surpass that but the law, so if there is load shedding even though they have panels they are cut off.
 
AlphaJohn said:
Home users go for batteries sure, companies doesn't. Ford, Mall of Africa, Medicare, Makro's and so on all use solar to subsidize daily use, not to store all production. Sure some might store enough for 2 hours but batteries are expensive so companies not gonna store what they don't use.
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Can concur.

On the N4, TRAC installed PV systems at the toll plazas - but it is only to subsidize daily use.

At night they default back to Eskom. But it saves them a couple of Rands, which is a way to go.

Big shops like PnP etc will have a problem with their chilled/frozen supplies as these are the biggest consumers of electricity, and at this stage it is not worth the money to get these on solar 24x7.

Unless a breakthrough in PV and battery storage comes soon, we'll soon be sitting between a rock and a hard place.
 
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