Trece Martires City, Calabarzon, Philippines, located at latitude 14.2842 and longitude 120.87, presents a favorable environment for solar energy production throughout the year. This tropical location benefits from consistent sunlight, with seasons primarily characterized by wet and dry periods rather than temperature extremes.
Seasonal Solar Performance
The solar energy potential in Trece Martires City remains relatively stable across seasons, with a notable peak during spring. The average daily electricity output per kilowatt of installed solar capacity for each season is as follows:- Spring: 6.94 kWh/day
- Summer: 5.27 kWh/day
- Autumn: 5.19 kWh/day
- Winter: 5.07 kWh/day
Optimal Panel Installation
For fixed solar panel installations in Trece Martires City, Calabarzon, the ideal tilt angle to maximize year-round energy production is 13 degrees facing South. This angle has been calculated considering the location's latitude, daily solar elevation angles, and weighted by NASA's solar irradiance data.Environmental Considerations
While Trece Martires City's tropical climate is generally conducive to solar energy production, there are some environmental factors to consider: Rainfall: The Philippines experiences a monsoon season, typically from June to November. Heavy rains and cloud cover during this period may temporarily reduce solar panel efficiency. To mitigate this, ensure proper panel placement and drainage systems to prevent water accumulation. Typhoons: The region is prone to tropical cyclones, which can pose a risk to solar installations. Robust mounting systems and impact-resistant panels should be used to withstand high winds and potential debris. Humidity: High humidity levels can lead to condensation on solar panels, potentially affecting their performance. Regular cleaning and maintenance can help address this issue.Preventative Measures
To optimize solar energy production in Trece Martires City, Calabarzon, consider implementing these preventative measures: 1. Use corrosion-resistant materials for all components to withstand the humid tropical environment. 2. Install a reliable monitoring system to quickly detect and address any performance issues. 3. Implement a regular cleaning schedule to remove dust, debris, and any salt deposits that may accumulate on the panels. 4. Consider micro-inverter or power optimizer technology to minimize the impact of partial shading on overall system performance. By taking these factors into account and implementing appropriate measures, solar PV systems in Trece Martires City can effectively harness the abundant tropical sunlight and provide a reliable source of renewable energy throughout the year.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 Trece Martires City
Seasonal solar PV output for Latitude: 14.2842, Longitude: 120.87 (Trece Martires City, 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:
 
Ideally tilt fixed solar panels 13° South in Trece Martires City, Philippines
To maximize your solar PV system's energy output in Trece Martires City, Philippines (Lat/Long 14.2842, 120.87) throughout the year, you should tilt your panels at an angle of 13° 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.
Seasonally adjusted solar panel tilt angles for Trece Martires City, 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 Trece Martires City, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 13° 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 | 30° South in Winter | 8° South in Spring |
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 Trece Martires City, 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 Trece Martires City, Philippines.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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.
Topography for solar PV around Trece Martires City, Philippines
The topography around Trece Martires City in the Philippines is characterized by a mix of gently rolling terrain and relatively flat areas. The city itself is situated in a lowland region, with elevations generally ranging from about 20 to 100 meters above sea level. The surrounding landscape is primarily composed of agricultural lands, interspersed with small hills and shallow valleys.
To the east and northeast of Trece Martires City, the terrain gradually rises towards the foothills of the Sierra Madre mountain range. This area features more pronounced hills and steeper slopes. To the west and southwest, the land becomes flatter as it approaches the coastal areas of Cavite province.
The region experiences a tropical climate with distinct wet and dry seasons, which influences the vegetation and land use patterns. Much of the natural forest cover has been cleared for agriculture, with rice paddies, coconut plantations, and other crops dominating the landscape.
Areas Suitable for Large-Scale Solar PV
For large-scale solar photovoltaic (PV) installations, the most suitable areas nearby would be the relatively flat, open spaces that receive ample sunlight throughout the year. Some potential locations include:
- The agricultural plains to the west and southwest of Trece Martires City, where there are extensive flat areas with minimal shading from hills or mountains.
- Abandoned or underutilized agricultural lands in the surrounding municipalities, which could be repurposed for solar energy production.
- Gently sloping hillsides facing south or southwest, which would receive optimal sunlight exposure throughout the day.
- Large, flat rooftops of industrial buildings or warehouses in and around Trece Martires City and neighboring urban areas.
When selecting sites for solar PV installations, it's important to consider factors such as proximity to existing electrical infrastructure, accessibility for construction and maintenance, and potential environmental impacts. Additionally, areas prone to flooding or landslides should be avoided to ensure the long-term stability and efficiency of the solar installations.
It's worth noting that while the region around Trece Martires City has potential for solar energy development, careful planning and environmental assessments would be necessary to balance the needs of energy production with the preservation of agricultural lands and local ecosystems.
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
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 3rd of September 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.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.




