Short answer
Choose on-grid solar if your grid supply is reliable and you want the lowest electricity bill. Choose hybrid if you face frequent power cuts. Choose off-grid only where there is no dependable grid.
Key Takeaways
- On-grid solar has the lowest upfront cost and needs no battery.
- An on-grid system switches off during a power cut for the safety of line workers.
- Hybrid solar adds a battery, so essential loads keep running during power cuts.
- Off-grid solar runs only on panels and batteries, with no grid connection.
- Only grid-connected home systems can qualify for the PM Surya Ghar subsidy, and batteries are not covered.
What Is the Difference Between On-Grid, Hybrid, and Off-Grid Solar?
The difference is how each system connects to the utility grid and whether it stores energy. An on-grid system connects to the grid through a net meter and stores nothing. A hybrid system connects to the grid and also charges a battery. An off-grid system has no grid connection and runs entirely on panels and a battery bank.
How Do the Three Solar System Types Compare?
| Feature | On-grid | Hybrid | Off-grid |
|---|---|---|---|
| Grid connection | Yes, with net meter | Yes, with net meter | No |
| Battery | No | Yes | Yes |
| Power during cuts | No, shuts down for safety | Yes, for selected loads | Yes |
| PM Surya Ghar subsidy | Yes, for eligible homes | Possible, panels only | No |
| Upfront cost | Lowest | Higher | Highest |
| Ongoing replacement | None for storage | Battery over time | Batteries over time |
| Best for | Reliable grid, maximum savings | Frequent power cuts | No or very weak grid |
Subsidy depends on eligibility and DISCOM approval. Battery cost is not covered by the subsidy.
When Is On-Grid Solar the Right Choice?
On-grid solar is the right choice when your area has a reliable grid supply and your main goal is a lower electricity bill. Your home uses solar power first, surplus units are exported and credited through net metering, and the grid supplies power at night. Because there is no battery to buy or replace, on-grid gives the fastest payback of the three types.
When Is Hybrid Solar Worth the Extra Cost?
Hybrid solar is worth the extra cost when power cuts disrupt your home or business often. The hybrid inverter isolates a backup circuit during an outage, and the battery powers the critical loads on it, such as lights, fans, Wi-Fi, and a refrigerator. You still save through net metering on normal days. The battery is sized around the loads you choose to back up, so a smaller backup list keeps the cost down.
When Does Off-Grid Solar Make Sense?
Off-grid solar makes sense where there is no grid connection or the supply is too unreliable to depend on, such as remote farmhouses, isolated job sites, and agricultural pumps. The battery bank is sized for the days of autonomy your site needs, which is the number of cloudy days the system must run on stored energy alone. Where the grid is reliable, on-grid solar costs far less.
Which Solar System Types Qualify for the PM Surya Ghar Subsidy?
Grid-connected home systems qualify for the PM Surya Ghar Muft Bijli Yojana subsidy, which reaches ₹78,000 for a home system of 3 kW or more. A grid-connected hybrid home system may qualify for the panel portion if it meets the scheme rules and the DISCOM approves net metering, but batteries are not covered. Off-grid systems are not covered. See our PM Surya Ghar subsidy guide for Uttar Pradesh for the full amounts.
The Bottom Line
Choose on-grid solar if your grid supply is reliable and you want the lowest electricity bill. Choose hybrid if you face frequent power cuts. Choose off-grid only where there is no dependable grid. If you are still unsure, a free SolarSpot roof visit checks your grid supply, power-cut pattern, and loads before recommending a system type.