On-grid solar systems, also known as grid-tied or grid-connected systems, are solar power systems that connect directly to the local utility grid. They are designed to work in tandem with the power grid, supplying solar energy to the building while relying on the grid for backup power when solar energy production is low (such as at night or on cloudy days). Here’s a breakdown of how they work and their benefits:
Key Components
- Solar Panels: These convert sunlight into direct current (DC) electricity.
- Inverter: The inverter converts DC electricity from the panels into alternating current (AC), compatible with the electrical grid and home appliances.
- Metering System: Tracks the amount of energy generated, used, and sent back to the grid.
- Utility Grid Connection: Excess electricity produced by the system can be exported to the grid, often receiving credit from the utility company.
How On-Grid Systems Work
- During sunny periods, the system generates electricity. If more power is produced than used, the excess can be fed back into the grid.
- In times of low sunlight, the system draws power from the grid to meet demand.
- Many on-grid systems use net metering, where surplus energy sent to the grid earns credits, offsetting electricity costs drawn from the grid later.
Benefits of On-Grid Solar Systems
- Cost Savings: Net metering can lower electricity bills by crediting energy fed back into the grid.
- Reduced Payback Time: The savings on utility bills help recover installation costs faster.
- No Battery Costs: Unlike off-grid systems, on-grid setups usually don’t require batteries, lowering installation and maintenance expenses.
- Low Maintenance: These systems are relatively easy to maintain, requiring little intervention beyond cleaning the panels.
Limitations
- No Power During Outages: When the grid is down, the on-grid system automatically shuts off for safety reasons.
- Dependence on the Utility Grid: This system requires a reliable grid connection to function
Ideal Use Cases
On-grid solar is ideal for homes, businesses, and industries looking to reduce their electricity bills and carbon footprint without investing in a complete off-grid setup. It’s particularly suitable in areas with favorable net metering policies, where users can maximize savings by exporting excess energy
