DEF CON 32 - Pick Your Poison: Navigating a secure clean energy transition - Emma Stewart

The U.S. power grid is transitioning to renewable energy, but this shift has created serious security vulnerabilities due to overreliance on Chinese-manufactured components, particularly in inverters and energy storage systems. While renewable energy is essential for climate goals, the current supply chain lacks diversity, transparency, and security—making the grid susceptible to cyberattacks, supply chain disruptions, and physical failures like battery fires.

• The U.S. now relies on 95–100% Chinese-made digital components in its power grid infrastructure, including inverters and batteries 5:30.
• A major security concern emerged when a U.S. military base installed a battery from a Chinese manufacturer, prompting a nationwide panic over security risks and leading to calls for replacement 7:00-7:30.
• Despite bans on companies like Huawei, the market has shifted, with Chinese firms rising to global leadership in inverter manufacturing, and no viable domestic alternative yet 11:04-11:28.
• Current policy efforts, such as banning specific companies or requiring "rip and replace," are ineffective due to massive costs, lack of funding, and the risk of simply shifting to unregulated alternatives 22:13-23:24.

We are caught between the need for clean energy and the risks of a fragile, insecure supply chain. Without policy reforms—such as mandatory vulnerability disclosure, stronger contract requirements, and clear regulatory oversight—we will continue to face both cyber and physical threats while failing to build a resilient, secure grid.

Sources:

• 5:30 Discussion of Chinese dominance in digital components
• 7:00-7:30 Milita