Sungrow launches PowerStack 3.0 C&I storage with modular scenario dock and full SiC PCS - ESS News

Sungrow's PowerStack 3.0 is not a product refresh—it is a grab for architectural control in C&I storage. The full-SiC PCS pushes switching into the 100 kHz+ regime, cutting volume by a third and crossing 98.5% efficiency. But the real disruption is the modular scenario-dock: it fractures the traditional integrated-cabinet model into swappable functional blocks, gutting the bundling moat that BMS-plus-PCS-plus-thermal vendors have relied on for a decade. Upstream, SiC substrate and device makers face repricing as C&I volume (projected 80 GWh by 2026) amortizes device costs. Risk: SiC supply remains concentrated in Taiwan, China and the US (Wolfspeed is post-bankruptcy); domestic 6-inch conductive substrates barely clear 70% yield. A full-SiC label with over 15% SiC BOM share could trigger carbon-tariff and origin-of-content scrutiny in EU and US markets—a hidden compliance tax. Competitive read: Huawei will likely sidestep head-on efficiency wars by locking customers into integrated solar-storage-charging scenarios. Tesla's C&I line will not switch to SiC near-term; its edge is software dispatch, not hardware. The genuine threat is BYD's vertical integration—blade cells plus in-house SiC PCS—shaving another 8-12% off landed cost. Verdict: within 12-24 months, full-SiC shifts from differentiator to table-stakes for C&I tenders. The modular dock architecture will spawn a third-party ecosystem, and non-SiC bids will lose 20%+ scoring weight in 2026 procurement cycles.