Part 5/10:
A recurring concern is the materials required for batteries, especially for storing solar energy. Musk countered these worries by highlighting the efficiency and scalability of Tesla's latest batteries.
He notes that a battery capable of storing 100% of a solar panel’s daily output weighs less than the solar panel itself, making batteries an optimal solution for peak power demands. With the advent of LFP (lithium iron phosphate) batteries, manufacturing costs have plummeted—over 85% in the last decade—thanks to continuous innovations like roll-to-roll manufacturing processes.