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Why are Power Grids so Large?

Former Community Member
Former Community Member
Why are power systems so large and interconnected? For example, what technical obstacles prevents the US eastern interconnection from being 8 isolated islands? Why not separate them by ISO/RTO? Why does every power grid in the world strive to be as large as geography allows?


Better yet why not have scattered power plants about (with redundancies of course) feeding load radially? A lot simpler and a lot less to go wrong.

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    GeorgeCooke:




    Sparkingchip:

    Why did the USA power companies change from delivering D.C. electricity to consumers to supplying AC electricity to them?


    Andy B




    More to the point why didn't they supply AC at 220 to 240v phase/neutral like most other countries?


     




     

    The DC requires a system such as described in the original post, AC can be distributed more efficiently removing the need for local generation.


    Andy Betteridge
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  • 0

    GeorgeCooke:




    Sparkingchip:

    Why did the USA power companies change from delivering D.C. electricity to consumers to supplying AC electricity to them?


    Andy B




    More to the point why didn't they supply AC at 220 to 240v phase/neutral like most other countries?


     




     

    The DC requires a system such as described in the original post, AC can be distributed more efficiently removing the need for local generation.


    Andy Betteridge
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