What characteristic of solar PV contributes to its scalability and low maintenance?

• A. Requires moving parts to generate electricity.
• B. No moving parts; modular deployment; mass production; easy rooftop installation.
• C. Requires constant fuel supply.
• D. Only works in hot climates.

Answer: (B)

The main idea is that solar PV scales well and stays low-maintenance because it has no moving parts, plus it is designed for modular, mass-produced deployment that is easy to install on rooftops. Without moving components to wear out, PV systems require less mechanical upkeep and are less prone to breakdowns, keeping maintenance simple and infrequent. The modular nature lets you start small and add more panels over time, expanding capacity as needed without a complete system redesign. Mass production lowers costs and makes replacements and upgrades straightforward, supporting large-scale deployment. Rooftop installation enables rapid, widespread rollout without major construction or land use, further boosting scalability while keeping ongoing maintenance minimal.