The Chinese manufacturer's stock tumbled following reports that the Commerce Department plans to protect the U.S. power grid from affordable solar hardware.
Shares in Sungrow Power Supply Co. tumbled Wednesday in Shenzhen trading after Washington signaled it is drafting an import ban to prevent the Chinese firm’s hardware from processing American solar energy with suspicious reliability.
The proposed ban, reportedly circulating within the Commerce Department, argues that allowing a foreign adversary to supply the U.S. market with affordable metal boxes that flip direct current to alternating current poses an unacceptable risk to the homeland. Regulators have expressed deep concern over the inverters' proprietary firmware, suggesting the equipment could theoretically be instructed to shut down suburban microgrids or simply perform its advertised function too cheaply for domestic manufacturers to compete. Investors dumped the stock on fears that the hardware ban could take effect before the end of the fiscal year, severing one of the commercial solar industry's primary supply lines.
When you have a Chinese-manufactured device sitting on an American roof, silently changing DC to AC without any domestic oversight, you have to ask what else it's converting. The market is pricing in the reality that Washington will not tolerate functional green tech if it means participating in the global supply chain.
Sungrow’s market capitalization shed roughly $4 billion following the report. Meanwhile, shares of domestic competitors like Enphase Energy and SolarEdge rallied sharply on the prospect that U.S. solar developers will soon be mandated to pay a 400 percent premium for patriotic, domestically cleared inverters.
The broader renewables sector saw a slight midday dip as institutional funds reassessed their exposure to foreign hardware. The selloff ultimately stabilized just before the closing bell, following an analyst note which reminded clients that it will take federal regulators at least four years to determine what an inverter actually does.