General Santos, Soccsksargen, Philippines, situated at 6.1926° N, 125.0783° E, offers a promising location for solar energy generation throughout the year. This tropical city experiences consistent sunlight, with seasons primarily characterized by wet and dry periods rather than traditional temperature-based seasons.
Solar Energy Potential
The solar energy output in General Santos remains relatively stable across the year, with slight variations between seasons. In summer, the average daily electricity output reaches 6.01 kWh per kW of installed solar capacity. This drops slightly to 5.78 kWh/day in autumn and 5.89 kWh/day in spring. Winter sees the lowest output at 5.00 kWh/day, but it's still a respectable figure for solar energy production. The consistency in solar output throughout the year makes General Santos an ideal location for year-round solar energy generation. However, the summer months offer the highest potential for solar energy production, making it the optimal time to maximize solar output.Optimal Panel Tilt
For fixed panel installations in General Santos, Soccsksargen, the ideal tilt angle to maximize year-round solar production is 5 degrees South. This slight tilt helps optimize the panels' exposure to sunlight throughout the year, accounting for the city's proximity to the equator and the Earth's elliptical orbit.Environmental Considerations
While General Santos presents favorable conditions for solar energy production, there are some environmental factors to consider: 1. Typhoons: The Philippines is prone to tropical cyclones, which can potentially damage solar installations. 2. Heavy rainfall: The wet season can lead to reduced solar output due to cloud cover and rain. To mitigate these risks, solar installations in General Santos should incorporate: - Sturdy mounting systems designed to withstand high winds - Waterproof components and proper drainage to handle heavy rainfall - Regular maintenance to ensure optimal performance and longevity of the system By addressing these factors, solar energy installations in General Santos can maintain high levels of energy production throughout the year, making it an excellent location for harnessing solar power.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 General Santos
Seasonal solar PV output for Latitude: 6.1926, Longitude: 125.0783 (General Santos, 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 5° South in General Santos, Philippines
To maximize your solar PV system's energy output in General Santos, Philippines (Lat/Long 6.1926, 125.0783) throughout the year, you should tilt your panels at an angle of 5° 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 General Santos, 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 General Santos, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 5° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 10° North in Summer | 12° South in Autumn | 21° South in Winter | 0° 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 General Santos, 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 General Santos, 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 General Santos, Philippines
The topography around General Santos, Philippines, is quite diverse and interesting. The city itself is situated on a coastal plain, with relatively flat terrain that gently slopes towards the Sarangani Bay. This coastal area is characterized by low-lying land, making it suitable for urban development and agriculture.
As you move inland from the coast, the landscape gradually becomes more varied. To the north and northwest of General Santos, the terrain begins to rise, transitioning into rolling hills and eventually into more mountainous regions. These hills and mountains are part of the larger mountain ranges that run through the island of Mindanao.
To the east and northeast of the city, you'll find the imposing presence of Mount Matutum, a dormant volcano that stands at approximately 2,286 meters (7,500 feet) above sea level. This mountain significantly influences the local topography, creating steeper slopes and more rugged terrain in its vicinity.
Regarding areas nearby that would be most suited for large-scale solar PV (photovoltaic) installations, there are several factors to consider. The ideal locations would combine flat or gently sloping terrain, ample sunlight exposure, and minimal environmental or cultural conflicts.
The coastal plains surrounding General Santos could be potential candidates for solar PV projects. These areas offer relatively flat land, which is advantageous for the installation and maintenance of solar panels. The consistent sunlight in this tropical region is also a significant benefit.
Some of the gently rolling hills to the north and northwest of the city might also be suitable, provided they aren't too steep. These elevated areas could potentially receive even more sunlight than the lowlands, increasing energy production efficiency.
However, it's important to note that the exact suitability would depend on various factors beyond just topography, such as land ownership, proximity to power infrastructure, and environmental considerations. Any large-scale solar project would require detailed site-specific assessments and planning to ensure its viability and sustainability.
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 13th of August 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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