An on-grid solar system, or grid-tied system, uses photovoltaic panels to generate solar energy, which is directly integrated with the local electricity grid. It enables users to power their homes or businesses with solar energy while relying on the grid for backup. Excess energy produced can be fed back to the grid, often earning credits through *net metering programs, though the application of net metering varies based on each state's policy.
Here’s how it works:
* Solar panels: Photovoltaic panels capture sunlight and convert it into direct current (DC) electricity. These panels are typically installed on rooftops or open areas with abundant sunlight.
* Inverter: The DC electricity generated is sent to an inverter, which converts it into alternating current (AC) electricity to power appliances and devices.
* Electrical service panel: The AC electricity flows into the building’s main electrical panel, ensuring a consistent power supply.
* Net metering: Any excess electricity is sent back to the grid through a bidirectional net meter. This system credits users for surplus energy, effectively reducing their electricity bills. However, it is important to note that the application of net metering changes as per each state's policy.
* Grid backup: When there is insufficient solar energy, the system draws power from the grid, ensuring uninterrupted electricity.
1. Advantages of on-grid solar systems
* Integrated with the grid: On-grid systems use the local grid as a virtual battery, eliminating the need for costly energy storage.
* Earn through *net metering: Surplus energy can be sold back to the utility provider, providing financial benefits. Although, the application of net metering changes as per each state's policy.
* Consistent energy supply: These systems ensure a steady power supply by drawing from the grid during low sunlight periods.
* Affordable installation: The absence of batteries reduces initial investment costs, making it an economical choice.
* Environmentally beneficial: Sharing excess renewable energy with the grid reduces dependency on fossil fuels, lowering the carbon footprint.
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