Solar PV Analysis of Marawi City, Philippines
Marawi City, Autonomous Region in Muslim Mindanao, Philippines is a pretty good place for generating solar energy all year round. This is because it's located in the tropics where sunlight is steady throughout most of the year. The city experiences more wet and dry seasons than traditional four seasons.
In terms of actual power output, you can expect to generate 5.88 kilowatt-hours (kWh) per day for each kilowatt (kW) of installed solar panels during summer, 5.38 kWh/day in autumn, 4.60 kWh/day in winter, and 6.02 kWh/day in spring.
The best times to generate solar power at this location would be during spring and summer when daily production rates are highest.
If you're installing fixed panel installations at this location, tilting your panels at an angle of 7 degrees towards the south will help maximize your total yearly production from your solar panels.
However, there could be some local factors that might affect how much energy you can produce from your solar installation here:
1) Weather: Marawi City has a tropical rainforest climate with heavy rainfalls especially between August and November which may reduce sunlight exposure on some days.
2) Environmental: Dust or dirt accumulation on the panels due to local conditions can reduce their efficiency.
3) Other factors: Local regulations or building codes might restrict where or how large a system you can install.
To ensure greater energy production despite these challenges:
1) Regular cleaning of panels should be done to remove dust or dirt.
2) Installations should comply with local regulations and building codes.
3) If possible, consider using adjustable tilt mounts instead of fixed ones so that they can be adjusted seasonally for maximum sun exposure throughout the year.
4) Use high-quality durable equipment capable of withstanding heavy rainfall periods without damage or significant efficiency loss.
5) Consider using battery storage systems to store excess power generated during peak hours for use later when sunlight is less available.
In conclusion, Marawi City, Autonomous Region in Muslim Mindanao, Philippines is a favorable location for solar energy production with some precautions and adjustments needed to maximize the potential of solar installations.
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 Marawi City
Seasonal solar PV output for Latitude: 8, Longitude: 124.2861 (Marawi 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 7° South in Marawi City, Philippines
To maximize your solar PV system's energy output in Marawi City, Philippines (Lat/Long 8, 124.2861) throughout the year, you should tilt your panels at an angle of 7° 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 Marawi 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 Marawi City, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 7° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 8° North in Summer | 14° South in Autumn | 23° South in Winter | 2° 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 Marawi 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 Marawi 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 Marawi City, Philippines
Marawi City is located in the province of Lanao del Sur, on the island of Mindanao in the Philippines. It is situated on a plateau above Lake Lanao, which is one of the 17 ancient lakes in the world. The city itself sits at an elevation of approximately 700 meters above sea level and it's surrounded by rolling hills and mountains.
The topography around Marawi City includes areas with relatively flat terrain as well as hilly and mountainous regions. This varied landscape could potentially offer several suitable locations for large-scale solar photovoltaic (PV) installations.
In terms of solar PV potential, flat areas are generally more suitable because they require less site preparation work compared to sloped terrains. Therefore, any expanses of relatively flat land around Marawi City could be ideal for this purpose.
However, considering that Marawi City has a tropical rainforest climate with significant rainfall throughout most parts of the year, it would also be crucial to consider factors such as cloud cover and precipitation rates when selecting sites for solar PV installations.
Additionally, proximity to existing power grid infrastructure would likely be another important consideration when identifying potential sites for large-scale solar PV projects near Marawi City.
While specific nearby areas suited to largescale solar PV cannot be pinpointed without further detailed analysis including GIS mapping and local site assessments among other things; broadly speaking open fields or unused agricultural lands can serve as potential sites given their general exposure to sunlight and relative ease of installation.
It's always recommended that thorough feasibility studies should be conducted before proceeding with such projects considering all necessary factors including but not limited to: local regulations & permissions required if any; environmental impact assessment; social considerations etc.
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: Friday 7th of June 2024
Last Updated: Monday 21st of July 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!
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.
