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Growatt SPH vs EG4 vs Sol-Ark: 48V Hybrid Inverter Comparison (2026)
A spec-by-spec look at the Growatt SPH 9600–18000TL-HU-US series, EG4 18kPV and FlexBOSS21, and Sol-Ark 15K and 18K: solar input, backup switchover, battery current, passthrough and US/Canada certifications.
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