Re: The Physics Behind the Spanish Blackout

On 12/06/2025 6:08 pm, Liz Tuddenham wrote:

Waldek Hebisch <antispam@fricas.org> wrote:
  [...]

Instantly dropping loads may be possible, but if it is the
only short term balancing mechanizm, then effect on loads may
be nasty.

 That option will become less effective as a greater proportion of the
supply is generated by renewables.  Dropping the load may also drop a
significant proportion of the supply from local solar and wind sources.

How? Solar and wind sources are free-standing generators. They don't need any power input from the grid. They do need timing information - to set the phase of the AC current that they feed into the grid, but they can get that from radio transmissions, and - less directly - from GPS signals.
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Bill Sloman, Sydney