Power System Transformation for Dummies
Power system transformation
understanding the challenges
Power system transformation and its phases
Some basic explanations (you may decide to skip) and methodology assumptions (you better read):


We distinguish six phases of the power system transformation:

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Phase 0 - vRES are insignificant.
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Phase 1 - System behaviour starts to change.
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Phase 2 - Sometimes vRES shares are substantial.
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Phase 3 Sometimes vRES cover complete load. We face SNSP restrictions.
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Phase 4 - Excess generation during large parts of the year.
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Phase X - No progress without flexibility and cross sector coupling.