Why is solar photovoltaic (PV) technology considered scalable for electricity generation?

• A. Solar PV modules require constant maintenance and large upfront costs.
• B. Solar PV modules can be mass-produced, installed on roofs or in arrays, have no moving parts, and can be deployed incrementally to match demand.
• C. Solar PV cannot be installed on rooftops.
• D. Solar PV relies on moving parts to generate electricity.

Answer: (B)

Solar PV scalability comes from its modular, mass-produced nature and its lack of moving parts. Each PV module is a standardized unit that can be manufactured at scale, driving down costs as more units are produced. These modules can be added to roofs or arranged in ground-mounted arrays, so you can start with a small installation and expand gradually to meet growing electricity needs. Because there are no moving parts, maintenance is relatively low and reliability remains high, which makes long‑term growth practical without frequent, complex upkeep. This incremental deployment—adding capacity in small steps as demand rises—lets solar power scale from a single rooftop system to large utility-scale solar farms as needed.