In theory a system running almost entirely on solar and wind can be studied with large storage facilities, grids, interconnections, demand management, hydroelectricity, bioenergy, or other sources of flexibility. In practice, hourly, seasonal, and territorial analyses are required. Terna highlights the importance of grids and infrastructure development; the IEA emphasises that integrating solar and wind requires flexibility. There are no data to claim simply 'solar and wind only' without specifying storage and backup.
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90.
Could Italy run entirely on solar and wind energy?
Not demonstrable as a simple statement without very strong assumptions.
