In the dark: Spain's electricity grid operator warns country could be heading for another blackout

It sounds like they've been caught off guard just adding in renewables without firming.

The real-time management of system frequency and voltage, load balance, fault and emergency response, black start facilities – all of these are conveniently forgotten. Synchronous condensers, grid forming batteries, backup generation, very long term storage, demand management, controlled load shedding are all absolutely critical and essential, yet don’t get a mention.

https://reneweconomy.com.au/explainer-what-does-it-actually-mean-to-firm-renewables/

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It sounds like they've been caught off guard just adding in renewables without firming.
The real-time management of system frequency and voltage, load balance, fault and emergency response, black start facilities – all of these are conveniently forgotten. Synchronous condensers, grid forming batteries, backup generation, very long term storage, demand management, controlled load shedding are all absolutely critical and essential, yet don’t get a mention.
https://reneweconomy.com.au/explainer-what-does-it-actually-mean-to-firm-renewables/