Key Takeaway
If your area rarely has brownouts and you mainly want a lower bill, grid-tie is the cheapest choice. If brownouts are a regular thing where you live, go hybrid, because the battery keeps your essentials running. Off-grid is for places the grid doesn't reach, or where power is so unreliable you can't count on it.
What's the difference between the three?
The solar panels are the same in all three. What changes is where the power goes. A grid-tie system works together with Meralco or your electric cooperative. A hybrid system does the same, but also stores power in a battery. An off-grid system has no connection to the utility at all and relies on its batteries.
| Grid-tie | Hybrid | Off-grid | |
|---|---|---|---|
| Battery | None | Yes | Yes, and bigger |
| Works during a brownout | No | Yes | Yes |
| Power at night comes from | The grid | The battery, then the grid | The battery |
| Upfront cost | Lowest | Higher | Highest |
| Usually best for | Areas with stable power | Areas with regular brownouts | Islands and remote sites |
Grid-tie: lowest cost, but no backup
During the day, your house uses solar first and only pulls from the grid for whatever solar can't cover. At night, you're on the grid as usual. It's the simplest setup, and it pays for itself the fastest.
The catch: when there's a brownout, a grid-tie system shuts off, even at noon on a sunny day. That's a safety feature, so it doesn't send power into lines that linemen are repairing. Plenty of homeowners only find this out during their first brownout, so make sure your installer explains it before you sign.
Grid-tie makes sense for most homes in Metro Manila and other areas where power is steady and the goal is simply a smaller Meralco bill.
Hybrid: solar plus a battery for brownouts
A hybrid system adds a battery and a hybrid inverter. Solar runs the house during the day and charges the battery at the same time. In the evening the battery takes over, and when it runs low, the grid fills in. If a brownout hits, the system keeps going on solar and battery.
The battery is what makes hybrid more expensive. Most home batteries today are LiFePO4 (lithium iron phosphate), which typically last 10 years or more.
Hybrid is worth it if brownouts happen a few times a month, if someone works from home, or if you run a business that can't afford to stop.
Off-grid: for places the grid can't serve
Off-grid systems aren't connected to the utility at all. The batteries carry the house through the night and through cloudy days, so everything has to be sized for your worst week, not an average one. That's why off-grid is the most expensive of the three.
This is common for resorts and homes on islands like Coron and Siargao, where the grid either isn't there or goes down often. Many off-grid setups keep a generator or a grid connection as a backup for long rainy stretches.
Can I sell extra solar power back to the grid?
With grid-tie and hybrid systems, yes. The Philippines has a net-metering program under the Renewable Energy Act (RA 9513): you send unused solar power to the grid and get credited on your bill. Homes can net-meter systems up to 100 kW, and since April 2026 a DOE circular lets businesses go up to 1 MW. The same circular gives utilities 10 working days to approve or reject a net-metering application.
One thing to know: the credit you get per kWh is lower than what you pay per kWh. So the real savings come from using your own solar during the day, with net metering as a bonus. You'll need to apply with your utility and get a bidirectional meter. We handle that paperwork for our clients.
So which one should I get?
- Brownouts are rare and you want the lowest price: grid-tie.
- Brownouts happen regularly, or you work from home: hybrid, with backup for your essentials.
- No grid, or the grid is down more than it's up: off-grid, with a generator or the grid as backup.
If you're on a budget, ask for a battery-ready (hybrid) inverter. You can start without a battery and add one later without replacing the inverter.
Still not sure? Tell us your average monthly bill and we'll recommend what fits. Request a free solar assessment.
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Get Free Solar QuoteCommon questions
Does a grid-tie solar system work during a brownout?
No. Grid-tie inverters shut down automatically during a brownout to protect linemen working on the grid, even when it's sunny. You need a hybrid or off-grid system with a battery for backup power.
Is hybrid solar worth it in the Philippines?
It's worth it if you get brownouts a few times a month, use a lot of power at night, or work from home or run a business that can't stop. If your power is stable, grid-tie pays for itself faster.
Can I add a battery to my grid-tie system later?
Yes, if you choose a battery-ready (hybrid) inverter from the start. With a standard grid-tie inverter, you'd need to add or replace the inverter first.
How big a battery do I need?
It depends on what you want running during a brownout and for how long. Backing up lights, a ref, Wi-Fi and fans needs far less battery than running several aircons. We list your essential loads first, then size the battery.