Clark, Central Luzon, Philippines is an excellent location for generating solar energy all year round. This is because it's located in the Tropics where sunlight is abundant and consistent throughout most of the year. The amount of electricity you can expect to get from each kilowatt (kW) of installed solar power varies slightly by season. In Summer, Autumn, and Winter you can expect around 5.3 kilowatt-hours (kWh) per day from each kW of installed solar power, while in Spring that increases to almost 7 kWh/day.
The best time to generate solar energy at this location would be during Spring due to higher daily output but realistically, any time of the year would still provide substantial energy yields because there isn't a significant difference between seasons.
For fixed panel installations at this location, tilting your panels at an angle of 14 degrees towards the South will give you maximum total yearly production from your solar photovoltaic (PV) system.
However, like any other place on earth, there could be local factors that might affect solar production in Clark. For instance:
1) Weather: While Clark enjoys plenty of sunshine throughout most parts of the year due to its tropical climate; heavy rains or typhoons during certain periods may reduce sunlight exposure which could affect overall efficiency and performance.
2) Dust and Dirt: Being close to Mount Pinatubo means ashfall or dust accumulation on panels might occur which may hinder their performance if not cleaned regularly.
To mitigate these potential issues:
1) Weather-proofing: Ensure that your installation includes weather-resistant measures such as robust mounting systems capable withstanding strong winds or storms associated with typhoon conditions.
2) Regular Cleaning: It's also important to maintain regular cleaning schedules for your panels so they remain dust-free and efficient especially after volcanic activities nearby which could cause ashfall or dust accumulation on them.
In conclusion though these factors are worth considering when installing solar panels in Clark, Central Luzon, the potential energy yield throughout the year is still high making it an ideal location for solar power generation.
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 Clark
Seasonal solar PV output for Latitude: 15.0667, Longitude: 120.6432 (Clark, 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 14° South in Clark, Philippines
To maximize your solar PV system's energy output in Clark, Philippines (Lat/Long 15.0667, 120.6432) throughout the year, you should tilt your panels at an angle of 14° 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 Clark, 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 Clark, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 14° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 1° North in Summer | 21° South in Autumn | 31° 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 Clark, 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 Clark, 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 Clark, Philippines
Clark, Philippines is located in the Central Luzon region. The topography around this area mainly consists of flat plains and some hilly terrains, with Mount Arayat being a significant geographical feature nearby.
The area experiences a tropical climate, which means it receives ample sunlight throughout the year making it suitable for solar photovoltaic (PV) installations. However, considering large-scale solar PV installations, areas with flat terrain would be most suited as they provide ease of installation and maintenance.
Following are some potential areas near Clark that could be suitable:
1. Tarlac City: Located to the north of Clark, Tarlac is predominantly made up of agricultural lands and has vast open spaces that can accommodate large scale solar projects.
2. Nueva Ecija: This province to the northeast also has extensive agricultural land that could potentially host solar farms.
3. Pampanga: This neighboring province has many flatlands especially towards its western part closer to Manila Bay which can be ideal for setting up large scale solar installations.
4. Bataan Peninsula: Although a bit farther away from Clark compared to other locations mentioned here, Bataan peninsula's coastal regions have plenty of open space where large-scale PV systems could potentially be installed without causing too much disruption to local ecosystems or communities.
However, any decision on installing large-scale solar PV should also take into account factors such as proximity to existing power grids for easy transmission and distribution of generated electricity; local regulations regarding land use; potential environmental impact; availability of infrastructure for construction and maintenance etc.
It's always advisable to conduct a detailed feasibility study before proceeding with any largescale renewable energy project.
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!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 17th 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.
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.




