Off-grid & backup
On-grid, off-grid or hybrid?
Three ways to build the same thing, for three different reasons. We build all three — this page is short on purpose, so you can find yours and tell us which you're after.
Most homes
On-grid
Panels and an inverter, tied to KSEB. No battery.
Best forAnyone whose main aim is a smaller bill.
No KSEB
Off-grid
Panels, inverter and battery, standing entirely on their own.
Best forEstates, farms and buildings the line doesn't reach — and schools or offices that run in daylight, when the sun does the work and the battery stays small.
Backup included
Hybrid
The same system with a battery added, still connected to KSEB.
Best forHomes and businesses that can't afford to sit in the dark.
Want the exact size?
The presets are typical homes. Your own list of appliances — with the hours you actually run them — gives the real answer.
Build it appliance by appliance →Return, or convenience.
That is really the whole choice, and both answers are good ones.
On-grid gives the better return, because a battery generates nothing — it only moves power you already made from one hour to another, and net metering does much of that for free.
A hybrid is the costliest of the three and pays back more slowly. What it buys instead is your house carrying on when the power doesn't. Plenty of people decide that is worth paying for, and they are not wrong — we are glad to build it, and we build it properly.
- Want a smaller bill
- On-grid
- Want power in a cut
- Hybrid
- Want both
- Hybrid — the costliest, eyes open
- No connection at all
- Off-grid
Tell us which of those you're after and the system more or less picks itself.
What we build, and where we stop.
Our battery systems are built around industrial-grade LiFePO4, with everything around them the same as any other NRG roof — TATA GI structure, 2.5 metre earthing, Mersen or Citel surge protection, ABB, Mersen or Schneider breakers, and monitoring we check each morning.
We start at 5 kW. Below that the maths stops working in your favour: a 1 kW system takes nearly the same labour, earthing and days on site as a 5 kW, so a small one built to our standard would cost you nearly as much for a fraction of the capability.
Something smaller?
Alex can sort you out.
An inverter and battery for lights, fans, a fridge or a pump — with or without solar. Same shop we started in back in 1997, lead-acid or lithium, and a fraction of what we would have to charge.
CALL ALEX · 97479 61602One thing worth planning for.
Panels are a twenty-year component — with bonus years we hope for. A battery isn't — a good LiFePO4 usually gives around ten years, often more, though how long depends on how hard it's worked and how warm it sits.
So budget for replacing it once across the life of the system. Not a catch, just a number worth knowing at the start rather than in year eleven.
- Panels · performance
- 30 years
- Inverter
- 8 years
- Battery, typically
- ≈ 10 years or more
Does a hybrid still get the ₹78,000 subsidy?
Yes — a hybrid is still grid-connected, so the subsidy applies exactly as it does on-grid.
Can I add a battery later?
Only if the inverter was chosen for it. A standard on-grid inverter can't take a battery, so adding one later means replacing it. If a battery is likely within a few years, tell us at the start and we'll specify for it.
Will it run my air conditioner?
It can — and that question usually decides the size of everything else. Heavy loads like AC, motors and water heating drive the inverter rating and battery bank far more than your unit count does, which is why we ask what runs and for how long.
Do I still get a KSEB bill on a hybrid?
Yes — the fixed charge and meter rent stay, plus anything you draw beyond what the system covers. Only an off-grid system disconnects you entirely.
Tell us what you're after.
A smaller bill, backup through the cuts, or a building with no connection at all — whichever it is, we'll size it properly and quote it after seeing the place.