The Province of Aklan in the Philippines is generally well-suited for solar energy production throughout the year. Located in the tropics, this region benefits from consistent sunlight and experiences wet and dry seasons rather than traditional four-season cycles.
Seasonal Solar Performance
Solar panel performance in Aklan varies across the meteorological seasons. Spring sees the highest energy output at 6.13 kWh per day for each kilowatt of installed solar capacity. Summer follows with 5.49 kWh/day, then autumn with 4.84 kWh/day, and winter with the lowest output at 4.22 kWh/day. These figures indicate that while there is some seasonal variation, the location maintains relatively strong solar potential throughout the year. The difference between the highest and lowest producing seasons is less pronounced compared to locations further from the equator.Optimal Panel Placement
For fixed solar panel installations in Aklan, the ideal tilt angle to maximize year-round energy production is 10 degrees facing South. This slight tilt helps optimize sunlight capture across different seasons and sun positions.Environmental Considerations
While Aklan's tropical climate is generally favorable for solar energy, there are some environmental factors to consider: 1. Typhoons: The Philippines is prone to tropical cyclones, which can damage solar installations. 2. Heavy rainfall: The region experiences a wet season, which can temporarily reduce solar efficiency. To mitigate these risks, solar installations should use sturdy mounting systems designed to withstand high winds. Additionally, regular cleaning and maintenance can help offset the impact of heavy rains and potential debris accumulation.Conclusion
Overall, the Province of Aklan offers a promising location for solar energy production. With proper installation techniques and regular maintenance, solar PV systems in this area can provide consistent and substantial energy output 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 Province Of Aklan
Seasonal solar PV output for Latitude: 11.6633, Longitude: 122.3303 (Province Of Aklan, 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 10° South in Province Of Aklan, Philippines
To maximize your solar PV system's energy output in Province Of Aklan, Philippines (Lat/Long 11.6633, 122.3303) throughout the year, you should tilt your panels at an angle of 10° 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 Province Of Aklan, 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 Province Of Aklan, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 10° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 4° North in Summer | 18° South in Autumn | 27° South in Winter | 5° 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 Province Of Aklan, 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 Province Of Aklan, 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 Province Of Aklan, Philippines
The Province of Aklan, located in the Western Visayas region of the Philippines, features a diverse topography that includes coastal plains, rolling hills, and mountainous areas. The province is situated on the northwestern portion of Panay Island, with its northern coast facing the Sibuyan Sea. Along the coastline, Aklan boasts stretches of sandy beaches and mangrove forests, particularly in the popular tourist destination of Boracay Island. Moving inland, the terrain gradually rises into gently rolling hills covered in lush vegetation. These hills are interspersed with fertile valleys and small rivers that wind their way towards the sea. As one travels further south within the province, the landscape becomes more rugged and mountainous. The southern part of Aklan is dominated by the Central Panay Mountain Range, which forms a natural boundary with neighboring provinces. These mountains are characterized by steep slopes, dense forests, and numerous streams and waterfalls.
Potential Areas for Large-Scale Solar PV
When considering areas suitable for large-scale solar photovoltaic (PV) installations in and around Aklan, several factors come into play. The ideal locations would have ample sunlight exposure, relatively flat terrain, and minimal environmental impact. The coastal plains and gently rolling hills in the northern part of Aklan present promising opportunities for solar PV development. These areas typically receive abundant sunlight and offer easier access for construction and maintenance. However, care must be taken to avoid prime agricultural land and ecologically sensitive coastal zones. Some of the inland valleys between the hills could also be suitable for solar farms, provided they are not prone to flooding and receive sufficient sunlight throughout the day. These locations might offer a balance between favorable topography and reduced visual impact on the landscape. It's important to note that while the mountainous regions in the south of Aklan may have some suitable flat areas, they are generally less ideal for large-scale solar installations due to potential shading from surrounding peaks and the challenges associated with access and grid connection. Any large-scale solar PV project in Aklan would need to carefully consider environmental impacts, land use regulations, and the province's tourism-focused economy. Engaging with local communities and conducting thorough environmental assessments would be crucial steps in identifying the most appropriate sites for solar energy development in this picturesque and ecologically diverse region.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: Wednesday 12th of March 2025
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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