I do not know what terminology is used, but solar-thermal has historically ran all the way from smallish (without storage potential and little economy of scale) to large plants.

In real terms I think PV and concentrated solar-thermal are the two big ones, which makes the exact drawing of the lines less relevant as long as these are two are in seperate cathegories.

And just to mix things up, there also exists combined PV and thermal like Zenith Solar.

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