How Long Does Solar Installation Take? (Philippines)
TL;DR
Physical installation takes 1-3 days, but the full process from signed quote to a live, net-metered system typically runs 4-8 weeks, most of it spent on permits and utility approval rather than on the roof. The DOE's April 2026 rules cut net metering approval to 10 working days, which is the single biggest reason that timeline shrank.
Physical installation itself is quick, usually 1 to 3 days for a typical home system. What takes longer is everything around it: the quote, the site survey, permits, and net metering approval. Altogether, expect roughly 4 to 8 weeks from signed contract to a fully live, grid-exporting system, though the exact number depends on your LGU and distribution utility.
What does the full timeline actually look like?
The process runs through a handful of stages, and only one of them happens on your roof.
- Quote and site assessment. An installer reviews your electric bill and roof, then sends a proposal. This can take anywhere from a same-day estimate to about a week, depending on how quickly you get quotes.
- Site survey. Before finalizing the design, the installer visits to check your roof structure, electrical panel, shading, and usage pattern in person. See our what to expect during a solar site survey guide for what they’re looking for. This is usually scheduled within a week or two of signing.
- Permitting. Your installer files for the LGU electrical permit and prepares the net metering application. Under the DOE’s 2026 rules, LGUs must issue the electrical permit within 3 working days and the Certificate of Final Electrical Inspection within 7 working days of a complete application.
- Installation. Mounting the racking, installing panels, wiring the inverter, and running the system through initial checks takes 1 to 3 days for most residential setups.
- Net metering approval and meter swap. Your distribution utility now has 10 working days to approve or reject a complete application, then installs the bi-directional meter. See our how to apply for net metering guide for the paperwork involved.
Why did the timeline get shorter in 2026?
Because the slowest parts of the process used to have no fixed deadline. Before the DOE’s April 2026 circular, distribution utilities could take well over a month just to decide on a net metering application, with no guaranteed turnaround. The new rules put hard ceilings on each step and add a deemed-approved backstop if a utility or LGU misses its window. See our DOE 2026 net metering rules guide for the full breakdown of what changed.
Rough timeline by stage
| Stage | Typical duration |
|---|---|
| Quote and proposal | Same day to ~1 week |
| Site survey scheduling | ~1-2 weeks after signing |
| LGU electrical permit | Up to 3 working days |
| Physical installation | 1-3 days |
| Final electrical inspection (CFEI) | Up to 7 working days |
| Net metering DU approval | Up to 10 working days |
| End to end (quote to live, exporting system) | Roughly 4-8 weeks |
Some of these stages overlap, permitting and net metering paperwork often move in parallel with scheduling the physical install, which is part of why the total isn’t simply the sum of every row.
Can I use solar power before net metering is approved?
Yes, for the power you use yourself. Once the system passes its final inspection, most installers can energize it for self-consumption right away. What you don’t get yet is export credit, that only starts once the bi-directional meter is installed and your net metering agreement with the utility is signed. If your household uses a lot of power during the day anyway, this gap matters less, since self-consumed solar power is worth more than exported power either way.
What actually causes delays?
The most common holdups aren’t the installer’s fault. Incomplete or incorrect document submissions restart the review clock. A site survey that turns up a roof needing reinforcement, or a main electrical panel needing an upgrade, adds time before installation can even be scheduled. LGU permitting offices with a backlog can also run slower than the mandated windows in practice, even with the new deadlines in place. Choosing an installer who’s organized about paperwork, see our how to choose a solar installer guide, is one of the bigger levers you actually control.
How do I get a realistic timeline for my own home?
Ask your installer for a stage-by-stage estimate specific to your LGU and distribution utility before you sign, since permitting speed varies by location more than most homeowners expect. Run your numbers through our cost calculator first so you’re comparing quotes that already reflect a realistic system size for your bill.
Frequently asked questions
How long does it take to install solar panels in the Philippines?
The physical installation, mounting panels and wiring the inverter, usually takes 1 to 3 days for a typical residential system. The full process including permits and net metering approval takes longer, roughly 4 to 8 weeks end to end.
What takes the longest in the solar installation process?
Permitting and utility approval, not the installation itself. Between the LGU electrical permit, final inspection, and your distribution utility's net metering approval, paperwork usually accounts for most of the total timeline.
How long does net metering approval take now?
Under an April 2026 DOE circular, distribution utilities must approve or reject a complete net metering application within 10 working days, a major improvement over the open-ended waits homeowners dealt with before.
Can I use my solar panels before net metering is approved?
Yes, for self-consumption. Your installer can usually energize the system once it passes inspection, so you start using solar power during the day before the bi-directional meter and net metering agreement are finalized, you just won't get export credits yet.
Does the timeline change depending on my location?
Yes. LGU processing speed and distribution utility responsiveness vary by city and cooperative, so a Metro Manila installation under Meralco won't necessarily move at the same pace as one under a provincial electric cooperative.
What can delay a solar installation?
Incomplete document submissions, a roof or panel needing structural work found during the site survey, backlogged LGU permitting offices, and installer scheduling during peak demand periods are the most common causes of delay.