Most people come to us asking about "hybrid" because it sounds like the more complete option. Sometimes it is the right call — but the honest answer depends entirely on which problem you're solving: cutting your electricity bill, or keeping the lights on during a power cut. Those are two different problems, and they don't require the same system.
On-grid: the simplest way to cut your bill
An on-grid system has no battery. Every unit your panels generate is exported to the TANGEDCO grid, and your home draws its power from the grid as normal — the two are netted against each other on your bimonthly bill, with any surplus banked as a credit for 365 days (see our net metering guide for exactly how that billing works). It's sized against your home's full day-and-night average usage, because the grid itself absorbs the mismatch between when you generate and when you consume.
The tradeoff: a standard grid-tied inverter shuts off during a power cut, by design — for the safety of utility workers repairing lines. No battery means no exception to that rule. If your area rarely loses power, or backup isn't a priority, on-grid is the simplest, cheapest way to meaningfully cut your bill.
Hybrid: a battery-ready inverter, with two real variants
"Hybrid" specifically means the inverter is built to manage a battery — but that doesn't automatically mean a battery is installed on day one. There are two distinct products under this umbrella, and mixing them up leads to the wrong expectations.
Hybrid without a battery (commercial daytime offset)
This is a hybrid-capable inverter installed with no battery yet, sized specifically to match your daytime usage window rather than your 24-hour average — common for businesses that operate fixed hours and want to directly offset grid draw during the day. It keeps the door open to add a battery later without replacing the inverter. Unlike plain on-grid, it doesn't necessarily shut off during a power cut — a CT (current transformer) prevents it from backfeeding power into the dead grid, so it can keep running directly off whatever the panels are generating at that moment. The catch is there's no battery to smooth that out: solar output fluctuates with cloud cover, so during an outage it may only power part of what it normally would, and that capacity can vary minute to minute rather than holding steady.
Hybrid with a battery (real backup power)
This is the version people usually picture when they say "hybrid" — a battery bank that can power your home through an outage. This is also where the most misunderstood part of solar comes in, so it's worth being precise about it.
So when you're discussing a hybrid system, ask directly: is Time of Use being configured for this install? If yes, your battery earns its keep every night. If no, its job is purely to be ready for the next outage — which is a completely legitimate reason to want one, just a different one than "lower bill."
What actually happens during a long power cut
A hybrid system with a battery doesn't gracefully ration power as the battery runs low. Once charge drops to the inverter's low-threshold cutoff (typically around 10–20%), it shuts its output down completely — the same as if there were no battery at all — and only restarts once solar has recharged the battery back up past a higher restart threshold (typically around 40%). If an outage runs longer than your battery lasts, expect a pause, not a slow dimming.
One nuance worth knowing when someone quotes you a backup-hours figure: a power cut during daylight is generally easier on the battery than the same outage at night, because your panels are directly offsetting the load in real time rather than the battery doing all the work alone. A stated "X hours of backup" number is usually the more conservative, night-only case — daytime outages typically run longer than that on the same battery. Sizing the battery to your actual essential-load runtime (not just what sounds reassuring) is what determines how long that window actually is.
Choosing between the three
| System | Cuts your bill | Works during a power cut | Best for |
|---|---|---|---|
| On-grid | Yes, via net metering | No — shuts off for safety | Bill reduction, backup not a priority |
| Hybrid, no battery | Yes, matched to business hours | Partially — runs directly off whatever the panels generate at that moment, no buffer for fluctuations | Commercial daytime use, future battery upgrade path |
| Hybrid, with battery | Only if TOU is configured — otherwise battery is outage-only | Yes, until battery depletes | Frequent outages, essential loads that can't go down |
If you're still unsure, the practical way to decide is to separate the two questions cleanly: "How much do I want to cut my bill?" points you toward on-grid or a well-configured hybrid with TOU. "What do I need to keep running during an outage, and for how long?" is a battery-sizing question independent of the first one. We size for both during a proper site visit rather than assume one answers the other.
One subsidy note: PM Surya Ghar eligibility depends on connection type and system size, not on which of these three you pick — a residential on-grid or hybrid system up to 3kW qualifies equally, while commercial connections don't qualify for any of the three, battery or not. See our subsidy guide for the full breakdown.
Not sure which one fits your home?
Tell us whether you're solving for bill reduction, backup power, or both — we'll size the right system, not just the one that sounds most complete.