The three types
| On-grid | Hybrid | Off-grid | |
|---|---|---|---|
| Connected to the grid | Yes | Yes | No |
| Battery | No | Yes | Yes |
| Works in a power cut | No | Yes, for backup loads | Yes |
| Net metering | Yes | Yes | No |
| Relative cost | Lowest | Higher | Highest per kW |
| Best for | Most homes and businesses | Homes with frequent outages | Remote sites without grid |
On-grid
The grid is your backup, and the net meter is your bank. There is no battery to replace, so cost and maintenance are lowest. The inverter switches off during a grid outage, which is a safety requirement.
Hybrid
A hybrid inverter and battery supply selected loads, such as lights, fans, router and a refrigerator, when the grid fails. It stays connected to the grid and can be net metered. Size the battery for the loads you really need and the hours of backup you want.
Off-grid
Without grid connection, the battery and the array must cover all use, including cloudy days. It suits remote locations and is rarely sensible in a city that has grid supply.
How to decide
- How many hours of power cuts do you face in a typical month?
- Which loads must keep running?
- How much budget do you have for batteries and their replacement?
- Do you want the PM Surya Ghar subsidy? The subsidy applies to the solar capacity, so confirm the rules for hybrid systems with your installer.
Our view
For most Bengaluru homes, start on-grid. Add a battery only if outages genuinely disrupt your work or health needs. We size both options in the quotation so you can see the cost difference.
Frequently asked questions
Can I add a battery later?
Only if the inverter is hybrid-ready or you accept replacing it. Tell your installer your plans up front.
How long do batteries last?
It depends on the chemistry, the depth of discharge and the temperature. Ask for the cycle life and warranty in writing.
Keep reading
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Tap Free Survey and share your pincode and bill. An engineer will check your roof, size the system and explain the PM Surya Ghar subsidy for your home.
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