In its determination to ban inverters, the FCC used data from 2020, writing that only 7% of US inverter shipments came from US-headquartered manufacturers, “with utility-scale applications dominated by foreign companies.” A draft ban on Chinese solar inverters was reported earlier this month by Reuters, over concerns that they pose a risk to the grid. In a public notice published yesterday, the FCC outlined that the inclusion of power inverters was due to a National Security Determination that addresses unacceptable risks posed by power inverters produced in other countries. “The lack of a secure US supply chain for inverters and the continuous inflow of foreign-produced or controlled inverters and inverter components poses threats to US economic and national security… Inverters’ remote connectivity introduces additional vulnerabilities which compound as inverter-based resources proliferate on the US grid. Earlier this week, PV Tech published a feature regarding the ongoing cybersecurity concerns in the solar PV and energy storage industry and what steps can be taken to minimise cyber threats (subscription required).