Frequent power cuts
Maintenance shutdowns, summer transformer faults and cyclone outages stop bothering you.
Grid + battery solar
Hybrid Solar: Savings + Backup
Cut your electricity bill with net metering and keep fans, lights, Wi-Fi and the fridge running through power cuts, all from one solar system.
Net meteringExport surplus units
Auto backupSwitches in milliseconds
Lithium10+ year batteries
Sun-chargedEven when the grid is down
Book a Free Solar Consultation
Get a hybrid system sized for your backup needs
What is hybrid solar?
The Best of On-Grid and Off-Grid
A hybrid system stays connected to the grid like an on-grid system, so surplus units are credited through net metering. It also has a battery and a hybrid inverter. When TNPDCL supply fails, the inverter switches your essential circuits to the battery in milliseconds, and the sun recharges it the next morning, even if the grid is still down.
- Lower bills: net metering credits your daytime surplus against night-time use
- Backup in power cuts: fans, lights, Wi-Fi, TV and fridge keep running
- Replaces your old UPS: no more lead-acid top-ups or charging from the grid
- Smart energy app: see generation, battery level and backup time on your phone
How it works
How a Hybrid System Works
Solar first, battery next, grid last, and backup the moment the power goes.
1.Panels power
Panels power
your home first
2.Surplus charges
Surplus charges
the battery
3.Extra units go to
Extra units go to
the grid (net meter)
4.Power cut? Battery
Power cut? Battery
takes over instantly
5.Track it all
Track it all
on your app
Who it's for
Is Hybrid Solar Right for You?
Work from home
Keep Wi-Fi, laptops and lights on through outages, without a noisy generator.
Elderly family & infants
Fans and essential appliances keep running when it matters most.
Replacing an old UPS
Upgrade worn-out lead-acid batteries to a solar-charged lithium system.
Shops & clinics
Billing systems, lights and refrigeration stay on so business doesn't stop.
Future-ready homes
Start with a hybrid-ready inverter today and add more battery later.
Power cuts rare in your area? An on-grid system is the most cost-effective choice, and you can keep your existing UPS for backup. No grid at all? See off-grid solar.
What's included
Everything in a Rainbow Solar Hybrid System
Solar panels
Tier-1, DCR-certified mono PERC or TOPCon panels with a 30-year performance warranty.
Hybrid inverter
Manages solar, battery and grid together, with automatic backup switching and Wi-Fi monitoring.
Lithium (LFP) battery
Compact, maintenance-free storage with 4,000–6,000 cycles and 80–90% usable capacity.
Safety & backup wiring
Separate backup circuit for essential loads, surge protection, earthing and lightning arrester.
Net meter & approvals
TNPDCL application, net meter and subsidy filing for the eligible solar part, all handled for you.
Cyclone-ready install
Hot-dip galvanised structures for coastal wind loads; battery placed in a shaded, ventilated, flood-safe spot.
Sizing guide
How Much Battery Backup Do You Need?
Size the battery for your essential loads, not the whole house. Your engineer confirms the exact design after the free survey.
| Essential loads on backup | Approx. load | Solar size | Battery (lithium) | Backup time |
|---|---|---|---|---|
| 4 fans, 6 LED lights, Wi-Fi, TV | ~400 W | 3 kW | 2.5 kWh | ~5 hours |
| + refrigerator | ~600 – 700 W | 3 – 5 kW | 5 kWh | ~6 hours |
| + water pump, laptops | ~1 kW | 5 kW | 5 – 7.5 kWh | ~4 – 6 hours |
| + one 1.5-ton inverter AC | ~2.2 kW | 5 – 6 kW | 10 kWh | ~4 hours |
Indicative only. ACs, geysers and induction cooktops need much more storage, so most homes keep them off the backup circuit. Read our solar + battery guide for Tamil Nadu power cuts for costs and battery choices.
Compare
On-Grid vs Off-Grid vs Hybrid
Not sure which is right for you? Here's how the three system types compare.
| On-grid | Off-grid | Hybrid | |
|---|---|---|---|
| Connected to the grid | Yes | No | Yes |
| Battery | No | Yes (essential) | Yes |
| Power during outages | No (shuts down for safety) | Yes | Yes, for backed-up loads |
| Net metering | Yes | No | Yes |
| PM Surya Ghar subsidy (homes) | Eligible | Not eligible | Ask us: depends on configuration |
| Upfront cost | Lowest | Highest | Medium–high |
| Best for | Most city homes & businesses with reliable grid | Remote sites, farms, no or very weak grid | Homes & shops with frequent power cuts |
Compare in detail: On-Grid Solar · Off-Grid Solar · Solar Calculator
FAQ
Frequently Asked Questions
What is a hybrid solar system?
A hybrid solar system is connected to the grid like an on-grid system, but also has a battery and a hybrid inverter. It saves money through net metering and keeps essential loads running during power cuts.
Is a hybrid solar system eligible for the PM Surya Ghar subsidy?
The subsidy is for grid-connected solar with a net meter. Hybrid systems can be designed so the solar part stays eligible, but batteries are not subsidised. We confirm eligibility for your configuration during the free site survey.
How long will the battery last during a power cut?
It depends on the battery size and what is connected. A 5 kWh lithium battery typically runs fans, lights, Wi-Fi, TV and a fridge (about 600–700 W) for around 6 hours.
Can I convert my existing on-grid system to hybrid?
Yes. Either the on-grid inverter is replaced with a hybrid inverter, or an AC-coupled battery system is added alongside it. Your panels stay as they are.
Will a hybrid system run my AC during a power cut?
It can, but an AC needs a much larger battery and inverter. Most homes keep ACs, geysers and induction cooktops off the backup circuit and back up only essential loads.