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I'd say "Supplementary Information for Strategic deployment of solar photovoltaics for achieving self-sufficiency in Europe throughout the energy transition"[1] fits the bill. It lays out various paths to 100% renewables (which in Italy, like in Spain, is heavily solar) by 20250

[1]: https://www.nature.com/articles/s41467-025-61492-9.pdf

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Just look at any map of solar power potential, solar irradiance, hours of sunshine of Europe.
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I think the question is more about the "and batteries" part than about the sunshine part.
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Exactly
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Latitude?
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