Undisclosed communication devices reportedly discovered in Chinese-manufactured solar panels and related equipment have sparked concerns among U.S. officials about the vulnerability of the nation’s power grid, according to a Reuters report. These “rogue” devices, found over the past nine months, could potentially destabilize energy infrastructure and trigger widespread blackouts, sources familiar with the matter told the outlet. The undocumented devices, including cellular radios, were identified in solar power inverters, batteries, electric vehicle chargers, and heat pumps produced by several Chinese suppliers. ... The U.S. has found Trojan horse communication devices in Chinese-made solar power inverters. They are used to connect...