String vs microinverter: which is right for your roof?

Most UK homes default to a string inverter. Microinverters earn their premium on shaded, complex or split-orientation roofs.

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In short

A single string or hybrid inverter is fine for a clean south-facing roof with no shade — £500–£1,500 cheaper than microinverters, simpler to service. Microinverters or power optimisers earn their premium on roofs with chimney shade, dormers, or two/three roof slopes — they prevent one shaded panel dragging down the whole string.

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