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Graph of hourly avg kWh electricity output per kW of Solar PV installed in Pagbilao, Philippines (by season)

The location at Pagbilao, Calabarzon, Philippines is pretty good for generating energy via solar panels throughout the year. This is because it's located in a tropical region where sunlight is consistent most of the time. The electricity output varies with each season, but it's still quite effective. In summer, you can expect about 5.57 kilowatt-hours (kWh) per day for every kilowatt (kW) of solar installed. Autumn produces slightly less at 4.96 kWh/day per kW installed, and winter dips a bit more to 4.39 kWh/day per kW installed. However, spring sees an increase again with about 6.62 kWh/day per kW installed.

The best times to generate solar power in this location would be during the spring and summer seasons when sunlight is abundant and energy output is highest.

For fixed panel installations here, tilting them towards south by 12 degrees would maximize their overall yearly production from solar photovoltaics (PV).

However, there are some factors that could potentially affect this energy production such as heavy rainfall or typhoons which are common weather events in the area due to its tropical climate; these could damage equipment or reduce exposure to sunlight thus lowering efficiency.

To help ensure greater energy production despite these challenges:

1) Choose durable materials that can withstand harsh weather conditions.
2) Install protective structures around your panels if possible.
3) Regular maintenance checks should also be performed especially after severe weather events to repair any damages promptly.
4) Consider installing tracking systems that adjust panel position based on sun’s movement for maximum exposure.
5) Use micro-inverters instead of central inverters as they allow each panel to operate independently so even if one gets damaged or shaded others continue working efficiently.

Remember though that while these steps can help mitigate potential issues they do not eliminate all risks associated with environmental factors – always consider local context when planning your installation!

Note: The Tropics are located between 23.5° North and -23.5° South of the equator.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 268 locations across Philippines. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Philippines by location

Solar output per kW of installed solar PV by season in Pagbilao

Seasonal solar PV output for Latitude: 13.9696, Longitude: 121.6913 (Pagbilao, Philippines), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:

Summer
Average 5.57kWh/day in Summer.
Autumn
Average 4.96kWh/day in Autumn.
Winter
Average 4.39kWh/day in Winter.
Spring
Average 6.62kWh/day in Spring.

 

Ideally tilt fixed solar panels 12° South in Pagbilao, Philippines

To maximize your solar PV system's energy output in Pagbilao, Philippines (Lat/Long 13.9696, 121.6913) throughout the year, you should tilt your panels at an angle of 12° South for fixed panel installations.

As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.

We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.

The sun
At Latitude: 13.9696, Longitude: 121.6913, the ideal angle to tilt panels is 12° South

Seasonally adjusted solar panel tilt angles for Pagbilao, Philippines

If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Pagbilao, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 12° South tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
2° North in Summer 20° South in Autumn 29° South in Winter 7° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Pagbilao, Philippines as follows: In Summer, set the angle of your panels to 2° facing North. In Autumn, tilt panels to 20° facing South for maximum generation. During Winter, adjust your solar panels to a 29° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 7° angle facing South to capture the most solar energy in Pagbilao, Philippines.

Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.

This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.

Calculate solar panel row spacing in Pagbilao, Philippines

We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Pagbilao, Philippines.

Our calculation method

  1. Solar Position:
    We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
  2. Shadow Projection:
    We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
  3. Minimum Spacing:
    We add the shadow length to the horizontal space occupied by tilted panels.

This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.






Please enter information above to calculate panel spacing.

Topography for solar PV around Pagbilao, Philippines

Pagbilao, Philippines is located in the province of Quezon. The topography around Pagbilao is a mix of coastal areas, hills and flatlands. It has a tropical climate with significant rainfall throughout the year.

For large scale solar PV installations, flat and open areas are usually preferred as they allow for easier installation and maintenance, better sun exposure, and less shading from surrounding features. Therefore, the flatland regions around Pagbilao would be most suited for such installations.

However, it's also important to consider factors like land use (e.g., agricultural activities), environmental impact (e.g., on local biodiversity) and proximity to electrical grids or other infrastructure necessary for power transmission. A detailed site assessment would be needed to identify specific locations that meet these criteria.

In addition to geographical suitability, successful implementation of large-scale solar projects also depends on political support from local government units (LGUs), availability of investment capital and favorable regulatory environments among others.

Philippines solar PV Stats as a country

Philippines ranks 40th in the world for cumulative solar PV capacity, with 1,370 total MW's of solar PV installed. Each year Philippines is generating 13 Watts from solar PV per capita (Philippines ranks 71st in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Philippines?

Yes, there are several incentives for businesses wanting to install solar energy in the Philippines. These include:

1. The Feed-in Tariff (FiT) program, which provides a guaranteed rate of return on investments in renewable energy projects;

2. Tax credits and exemptions from certain taxes;

3. Net metering programs that allow businesses to sell excess electricity back to the grid;

4. Grants and loans from government agencies such as the Department of Energy and the Philippine Solar Power Alliance;

5. Technical assistance from organizations like USAID’s Clean Energy Program; and

6. Access to financing through banks, venture capital firms, or other sources of private capital.

Do you have more up to date information than this on incentives towards solar PV projects in Philippines? Please reach out to us and help us keep this information current. Thanks!

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Pagbilao, Philippines
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 10th of May 2024
Last Updated: Monday 21st of July 2025

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Compare this location to others worldwide for solar PV potential

The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.

However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.

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Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide

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Calculate Your Optimal Solar Panel Tilt Angle