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What happens to excess energy on the grid? Answered and closed

  • 28-05-2022 9:28am
    Registered Users Posts: 75 ✭✭

    Sorry if this is a silly question but I'm more interested now that we've made a big investment in solar PV. Let's say there is a day of massive wind/solar generation and the demand side is less than generation. What happens to that excess generation?

    If it's wasted (not good!) then I presume this is why large scale battery storage for the grid is so important as renewables increase and we move away from fossil?

    Thanks in advance

    Post edited by Sam Russell on


  • Registered Users Posts: 28,779 ✭✭✭✭Wanderer78

    unsure if theres interconnects already in place, which would mean energy can be moved from one region to another, but batteries are only one requirement for future storage, it looks like hydrogen will play a critical role in meeting our future storage needs, maybe the most critical

  • Registered Users Posts: 2,336 ✭✭✭golondrinas

    They hide the excess so they can declare a shortage and put the prices up again or so it would appear to the untrained eye. There is no heaven or hell now so greed is king.

  • Registered Users Posts: 28,779 ✭✭✭✭Wanderer78

    jaysis, so theres a big hole in the ground, where they hide all of this energy, yea?

  • Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 48,202 CMod ✭✭✭✭magicbastarder

    You could call turlough hill 'a big hole in the ground' where they hide excess energy, to be fair...

  • Registered Users Posts: 6,349 ✭✭✭Tow

    The voltage and frequency will rise, which will cause the grid to become unstable and collapse. Before that happens they need to reduce supply, the easiest way is with hydro electric were is it 'just' a matter of turning valve. This is why ESB networks etc do not like solar and small independent generators. 'Incompetent' is the term their management have used!

    When is the money (including lost growth) Michael Noonan took in the Pension Levy going to be paid back?

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  • Registered Users Posts: 28,779 ✭✭✭✭Wanderer78

    the grid will be fine, we have access to great expertise, and will planned interconnects, we ll have even greater access, we ll be fine, we ll figure it out, yes there will be issues, but.....

  • Moderators, Science, Health & Environment Moderators Posts: 19,333 Mod ✭✭✭✭Sam Russell

    Mod: Question answered so thread closed.

This discussion has been closed.