Maasin, Eastern Visayas, Philippines, located at 10.1304° N, 124.8446° E, offers a promising environment for solar energy generation throughout the year. Situated in the tropics, this location benefits from consistent sunlight and experiences wet and dry seasons rather than traditional four-season cycles.

Seasonal Solar Performance

Solar energy production in Maasin varies across meteorological seasons:

• Spring: 6.20 kWh/day per kW installed (highest output)
• Summer: 5.82 kWh/day per kW installed
• Autumn: 5.16 kWh/day per kW installed
• Winter: 4.41 kWh/day per kW installed (lowest output)

Spring emerges as the most productive season, while winter sees the lowest energy generation. However, the relatively small difference between seasons indicates a stable year-round solar potential.

Optimal Panel Positioning

For fixed solar panel installations in Maasin, Eastern Visayas, the ideal tilt angle to maximize year-round production is 8 degrees facing South. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for the Earth's elliptical orbit and Maasin's specific latitude.

Environmental Considerations

While Maasin's tropical climate is generally favorable for solar energy production, there are some environmental factors to consider:

• Typhoons: The Philippines is prone to tropical cyclones, which can damage solar installations.
• Heavy rainfall: During the wet season, frequent cloud cover and rain may reduce solar efficiency.

To mitigate these risks, solar installations should incorporate sturdy mounting systems designed to withstand high winds. Additionally, using high-quality, water-resistant panels and ensuring proper drainage can help maintain performance during heavy rains.

Conclusion

Despite some seasonal variations and environmental challenges, Maasin's location offers excellent potential for year-round solar energy generation. With proper installation techniques and equipment selection, solar PV systems can provide a reliable and efficient source of renewable energy in this tropical setting.

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 Maasin

Seasonal solar PV output for Latitude: 10.1304, Longitude: 124.8446 (Maasin, 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 8° South in Maasin, Philippines

To maximize your solar PV system's energy output in Maasin, Philippines (Lat/Long 10.1304, 124.8446) throughout the year, you should tilt your panels at an angle of 8° 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 Maasin, 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 Maasin, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
6° North in Summer	16° South in Autumn	25° South in Winter	4° 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 Maasin, 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 Maasin, Philippines.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Maasin, Philippines

The topography around Maasin, Philippines, is characterized by a diverse landscape that combines coastal areas, rolling hills, and mountainous terrain. Maasin City, the capital of Southern Leyte province, is situated on the western coast of Leyte Island, facing the Camotes Sea. The immediate vicinity of Maasin features a relatively narrow coastal plain that quickly gives way to hilly terrain as one moves inland. These hills gradually increase in elevation, forming part of the central mountain range that runs through Leyte Island. The coastline near Maasin is irregular, with small bays and inlets interspersed with rocky outcrops and sandy beaches.

Coastal Plain and Lowlands

The coastal plain around Maasin is relatively narrow but provides some flat to gently sloping land. This area is primarily used for urban development, agriculture, and some small-scale industrial activities. The soil in this region is generally fertile, supporting various crops and vegetation.

Hilly Terrain

Moving away from the coast, the landscape transitions into rolling hills. These hills are often covered with a mix of agricultural land, coconut plantations, and patches of forest. The slopes of these hills can vary from gentle to moderately steep, creating a patchwork of terrain suitable for different land uses.

Mountainous Areas

Further inland, the terrain becomes more rugged and mountainous. These areas are part of the central mountain range of Leyte Island and feature steeper slopes, deeper valleys, and higher elevations. The mountains are often covered in dense tropical forests, particularly at higher altitudes where human activity is less prevalent.

River Valleys

Several rivers and streams flow through the region, carving valleys and creating alluvial plains as they make their way to the sea. These river valleys often provide fertile land for agriculture and serve as important water sources for the local population.

Potential for Large-scale Solar PV

When considering areas nearby Maasin for large-scale solar PV installations, several factors come into play. The most suitable locations would likely be found in the following areas: 1. Gently sloping hillsides: Areas with a slight inclination facing south or west could provide optimal sun exposure while minimizing the need for extensive land preparation. 2. Cleared upland areas: Former agricultural lands or cleared areas in the hilly regions that are not currently in use could be repurposed for solar farms. 3. Coastal plains: While competition with agriculture and urban development might be a concern, some portions of the coastal plain that are less suitable for other uses could be considered for solar installations. 4. River valley terraces: Elevated flat areas along river valleys, particularly those that are not prime agricultural land, could potentially be used for solar farms. It's important to note that any large-scale solar PV project would need to carefully consider environmental impacts, land use conflicts, and the local climate, including the potential for typhoons and heavy rainfall. Additionally, proximity to existing power infrastructure and the local electricity grid would be crucial factors in determining the most suitable locations for such installations.

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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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.