Measurement
Voltage is an electrical measurement that represents the potential difference in electric charge between two points in a circuit, which drives current flow. It’s measured in volts (V). In practical terms, voltage can be thought of as the “pressure” that pushes electrical current through wires. Different parts of the power system operate at different voltages: solar panels might generate DC voltage around 30-40V each, a residential solar array might run at 300-600V DC before inversion, household AC voltage is typically 120V or 240V, and transmission lines carry high AC voltages (in the tens or hundreds of kilovolts) to reduce losses. Maintaining proper voltage levels is essential for equipment safety and grid stability. In renewable energy systems, inverters and transformers adjust voltages to suitable levels for use and grid integration.