On-Grid vs Off-Grid vs Hybrid Solar Systems — Which One Do You Need?

Every rooftop solar quote starts with one decision: on-grid, off-grid or hybrid. The choice sets your budget, whether you have power during outages, and whether you can claim the government subsidy. This guide explains each option and gives you a simple way to decide.

Quick comparison

*The subsidy applies to grid-connected rooftop solar capacity. Battery costs are not subsidised. Confirm current rules for your specific setup before you buy.

On-grid solar: the most common choice

An on-grid (grid-tied) system connects directly to your electricity supply. Your home uses solar power first, exports surplus through a net meter, and draws from the grid at night.

Why most homes choose it:

• Lowest upfront cost, because there are no batteries.
• Almost no maintenance beyond cleaning panels.
• Net metering credits the units you export, so nothing goes to waste.
• Eligible for the full PM Surya Ghar subsidy.

The catch: an on-grid system shuts down when the grid fails. This is a safety requirement called anti-islanding — it stops your panels from sending power into lines that technicians may be repairing. If outages are rare where you live, this rarely matters.

Off-grid solar: fully independent

An off-grid system has no connection to the grid. Panels charge a battery bank during the day, and your home runs from those batteries at night.

Where it makes sense:

• Farmhouses, remote sites or new buildings where a grid connection is unavailable or very expensive.
• Locations with long, unpredictable outages where backup matters more than cost.

The trade-offs:

• Batteries add a large share of the cost and need replacement — lead-acid every few years, lithium-ion after roughly 10–15 years.
• The system must be sized for your worst days, like several cloudy days in a row, so it is usually oversized and expensive.
• Surplus energy in sunny months is wasted once batteries are full, since there is no grid to export to.
• Not eligible for the PM Surya Ghar residential subsidy.

Hybrid solar: grid plus backup

A hybrid system combines both. It stays connected to the grid with net metering, and adds a battery that keeps essential loads running during a power cut.

Why people choose hybrid:

• Backup for lights, fans, a fridge, Wi-Fi or a small pump during outages.
• You can still export surplus and earn net metering credit.
• Many hybrid inverters let you add a battery later, so you can start without one.

The trade-offs:

• A hybrid inverter and battery cost noticeably more than an on-grid setup.
• Battery capacity limits how long you are covered, so you choose which circuits to back up.

Which one do you need?

Use this simple guide:

• Reliable grid, want lowest cost and fastest payback? Choose on-grid.
• Frequent or long power cuts, and a budget for batteries? Choose hybrid.
• No grid connection available at your site? Choose off-grid.
• Unsure about outages but might want backup later? Choose on-grid with a hybrid-ready inverter, and add a battery if you need it.

For most city and town homes with a reasonably stable supply, on-grid gives the best return on investment. You can see your likely payback period in our savings calculator, and read more about what happens during power cuts.