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Well & Truly Off The Grid
Last Post by Judith 3 weeks ago
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 Judith
(@judith)
Prominent Member Member
Joined: 2 years ago
Posts: 373
18/06/2025 12:51 pm  

Thanks @lucia I look forward to some technical facts as well as executive summaries. The foreign reports are not separate investigations just translation from El Pais. Browsing the Spanish press (looking for trade press reports) there was some speculation on the contribution from some form of corruption. Is this something you have any fact on rather than the speculation?

2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC


   
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 Judith
(@judith)
Prominent Member Member
Joined: 2 years ago
Posts: 373
19/06/2025 5:15 pm  

Here’s a little more technical detail https://cleantechnica.com/2025/06/18/inside-the-iberian-grid-collapse-what-really-went-wrong/

2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC


   
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Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 2455
23/06/2025 11:53 am  

Posted by: @lucia
↑

The first press reporting is out Here's a brief synopsis from Spanish media:

The big Blackout El Apagón: 

Yes I realise I'm picking this up a week late...
... but I don't like the way in which the Spanish Minister, Sara Aagesen, has released this to the press.

 

1: There's too much 'apportioning of blame', which isn't helpful.

When a complex situation has resulted in a national outage, you need to encourage feedback from all those involved technically.
Attacking regulatory and technical mistakes by Red Eléctrica, will have the opposite effect.

Who, from a technical background, would now want to work with a Minister who's going to throw the mess all over you when something goes wrong in future?

 

2: Text-based descriptions of power surges and fluctuations are next to useless.

Any such report must be accompanied by timelines showing the relevant data.

Only when the reader sees the periodicity and level of such fluctuations is it possible to appreciate what the Grid Operator could and could not do with the tools they had available to them at the time.

 

3: Whyever does the Spanish Government think there's anything to be gained by issuing a press release in advance of the main technical report.

Any incorrect observations and opinions that have been made by the Minister, are now almost impossible to retract!

Save energy... recycle electrons!


   
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 Judith
(@judith)
Prominent Member Member
Joined: 2 years ago
Posts: 373
06/08/2025 10:37 am  

https://www.entsoe.eu/publications/blackout/28-april-2025-iberian-blackout/#Preliminary_Chronology_of_Events
this document extensively describes (in a non-blame, neutral manner) the WHAT of the voltage/frequency of the Spanish black-out but doesn’t begin to describe the WHY. Hence no corrective recommendations to prevent re-occurrence. It does state the black-out is the first incidence associated with an over-voltage state. 
I look forward to the WHY! @transparent may be satisfied with the time resolution but to me it just looks like symptoms collecting without (yet) understanding. But the underlying and implied regular oscillation between east and west Spain looks like an acceptance of marginal stability to me.

2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC


   
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