According to Sawyer Merritt on X, Tesla has officially started deliveries of its newly redesigned 420W residential solar panel, offering significant technological improvements for smart home energy management. The new panel features an all-black finish, a thicker architectural frame, and 18 independent power zones that minimize the impact of shading on overall output, directly addressing common solar efficiency challenges (source: Sawyer Merritt via X, Jan 8, 2026). Built at Tesla's Giga New York factory, the panel supports AI-driven home energy systems by enabling more granular, real-time optimization of solar energy collection. The 20.5% module efficiency and improved physical design position Tesla's solution as a competitive offering for AI-powered residential energy platforms, opening new business opportunities for smart grid integration and home automation providers.