Re: The Physics Behind the Spanish Blackout

On 6/10/25 8:56 AM, john larkin wrote:
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If I had an electric car, I sure wouldn't want it to be used "to
stabilise the grid" and be left without transport when the lights are
off.

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For systems that can feed back to the grid there are usually settings
that determine how much of the battery storage can be sent to the grid
so there shouldn't be an issue with running down the battery even if the
energy is coming from an EV.
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My solar PV system has battery storage and I subscribe to Tesla's
Virtual Power Plant. When the grid is under stress I allow up to 50% of
the storage to be used by the grid for which I get paid $2 per kWh.
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I usually get a few hours notice through the App on my phone and I can
opt-out for any event. This is in California although Tesla operates
similar programs throughout the country.
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Tesla vehicles do not (yet) support Vehicle to Grid (V2G) operation
although the extra hardware required is minimal as the conversion from
AC to DC in the car is already pretty much bidirectional to achieve
high-efficiency. (Just using Diodes is too inefficient)
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