Understanding On-Grid Solar Systems
An on-grid (grid-tied) solar system is directly connected to the APSPDCL distribution grid. During the day, your panels generate power that runs your home first. Any excess is exported to the grid and credited to you via Net Metering — a powerful mechanism that effectively uses the grid as a free battery. These systems are the most cost-effective option and are the standard recommendation for most Nellore and Tirupati homeowners.
The Catch: Power Cuts
Standard on-grid systems shut down automatically during a grid power outage. This is mandatory for the safety of DISCOM linesmen. In areas of Kadapa and parts of Ongole that experience frequent load-shedding, this is a critical consideration.
Hybrid Systems: The Best of Both Worlds
A hybrid solar system includes a battery storage unit — typically a lithium-ion battery bank. This allows the system to continue powering your home during grid outages. The solar panels charge the batteries during the day, and the inverter automatically switches to battery power during blackouts. Hybrid systems are ideal for homes with sensitive electronics, home offices, or medical equipment.
Cost Comparison for AP Homeowners
For a 3 kW residential system in Nellore:
- On-Grid: Net cost after subsidy ≈ ₹1,22,000. ROI in 40–50 months.
- Hybrid (with 5 kWh battery): Net cost ≈ ₹1,80,000–₹2,20,000. ROI in 48–60 months but provides full energy independence.
Our Recommendation
For most homeowners in Nellore and Tirupati where the grid is relatively stable, an on-grid system provides the fastest ROI. For areas with frequent power cuts in Kadapa and Ongole, or for customers who want complete energy independence, ELRIX ENERGY recommends a hybrid system with a lithium-ion battery bank.
