Gate 6 Airstreams Renewables Practice Test 2026 - Free Renewable Energy Practice Questions and Study Guide

On-grid solar PV systems are built to take sunlight, convert it to usable electrical power, and safely connect that power to the utility grid and the home. The complete, typical setup includes several key elements that work together from capture to delivery.

PV modules capture solar energy and generate DC electricity. DC wiring links the module strings and routes that DC power toward the inverter. Disconnects and combiner boxes provide safe isolation and organize multiple strings into a single feed for the inverter. The inverter converts the DC produced by the panels into AC power that matches the grid and household electrical systems. AC wiring then carries that power to the point of interconnection or distribution within the building. Interconnection equipment covers the hardware and protective interfaces needed to connect safely to the utility grid, including fusing, switches, and connection points. The utility meter tracks energy flowing to and from the grid, and protection and monitoring equipment safeguard the system and give visibility into performance and safety, such as breakers, surge protection, and performance monitoring.

Other options omit essential parts: battery banks are characteristic of off-grid or hybrid systems, not a standard on-grid setup; focusing only on inverters and transformers misses many critical components; and a grid-tied inverter with islanding protection alone ignores the wiring, interconnection, metering, and protective/monitoring elements that make the system complete and safe.