Its US solar ambitions centre largely on rooftop PV – specifically the commercial and industrial (C&I) segment – and on buying portfolios of assets from developers rather than developing them in-house, as it typically does with wind.

Iberdrola Renewables – its subsidiary in Portland, Oregon – has previously developed and built several utility-scale solar projects in the US. But most of those are half a decade old, and today solar makes up only a tiny fraction of the company's renewables portfolio, in the US and globally.

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