Five Eskom units fail - Load-shedding could be imminent

[pinball wizard]

Remind me again, what does the "Available Generation Capacity" consist of?

 

[wingnut771]

Their coal plants, the imported storage, nuclear and pumped storage as far as I know.

If it includes pumped storage then why burn diesel like you say? 2GW difference between supply and demand which is not even counting renewables afaik.

 

[Lupus]

If it includes pumped storage then why burn diesel like you say? 2GW difference between supply and demand which is not even counting renewables afaik.

They don't always use the pumped storage.

 

[wingnut771]

They don't always use the pumped storage.

Of course, cronies can't get rich on recycled water.

 

[Neptuner]

If it includes pumped storage then why burn diesel like you say? 2GW difference between supply and demand which is not even counting renewables afaik.

Burning diesel is the last resort. Pumped storage is only used during evening and morning peak.

 

[Drifter]

This is weird though, not sure why they used diesel, we had the 2GW backup.

That 2GW goes to Zim.

 

[wingnut771]

Burning diesel is the last resort. Pumped storage is only used during evening and morning peak.

I know that, you do realise these figures being posted are for evening peak?

 

[wingnut771]

I guestimate out pumped storage is about 3GW, so take that off the capacity and we're left with 25GW coal.

edit: and 14 OCGTs being used (14x150MW) = 2.1GW so actually only have 23GW coal out of 40GW installed.

 

[pinball wizard]

why burn diesel

The hamster was having a rest

 

[PaulMurkin]

Of course, cronies can't get rich on recycled water.

You say that... but...

 

[Gordon_R]

Burning diesel is the last resort. Pumped storage is only used during evening and morning peak.

That's the theory, and the least cost option. However when your baseload is screwed, you use diesel and pumped storage 18 hours a day just to meet average demand levels (plus contingencies).

The current shortfall is why when something major breaks, we never start with Stage 1 load shedding from 5pm to 9pm, but immediately go to Stage 2 for 24/7.

 

[Lupus]

I guestimate out pumped storage is about 3GW, so take that off the capacity and we're left with 25GW coal.

edit: and 14 OCGTs being used (14x150MW) = 2.1GW so actually only have 23GW coal out of 40GW installed.

Nope the OCTGs are not included in the Available capacity there, I used to think that, until Sikonathi corrected us.

 

[Neptuner]

That's the theory, and the least cost option. However when your baseload is screwed, you use diesel and pumped storage 18 hours a day just to meet average demand levels (plus contingencies).

The current shortfall is why when something major breaks, we never start with Stage 1 load shedding from 5pm to 9pm, but immediately go to Stage 2 for 24/7.

Spot on, the baseload specifically the coal fired units is the root of the problem. What exacerbates the problem is operating these baseload plants like peaking units it creates more problems.

 

[PaulMurkin]

Hovering around 49.8Hz.... and its 12:00... but its Monday...

 

[Lupus]

Hovering around 49.8Hz.... and its 12:00... but its Monday...

This at 11:40 went from all red to this

 

[Gtx Gaming]

So power alert about 4pm or what do you guys reckon?

 

[ADrunkTeddyBear]

Hovering around 49.8Hz.... and its 12:00... but its Monday...

Hovering around 50.2hz and 49.76hz

 

[PaulMurkin]

View attachment 1198632

Hovering around 50.2hz and 49.76hz

Yup... seeing the same here

 

[Jet-Fighter7700]

here comes the kak

 

[Lupus]

here comes the kak

Load reduction?