The location of Saranay, Cagayan Valley, Philippines, offers a promising environment for solar energy generation throughout the year. Situated in the tropics, this area benefits from consistent sunlight and experiences seasons primarily characterized by wet and dry periods rather than traditional temperature-based seasons.
Seasonal Solar Output
Solar energy production in Saranay varies across the meteorological seasons. Spring stands out as the most productive period, with an impressive daily output of 6.71 kWh per kW of installed solar capacity. Summer follows closely behind at 6.02 kWh/day. Autumn sees a moderate decrease to 4.74 kWh/day, while winter experiences the lowest output at 3.69 kWh/day.Optimal Times for Solar Generation
Based on these figures, the ideal times for solar energy generation in Saranay are during spring and summer. These seasons offer the highest solar irradiance, resulting in peak energy production. However, it's worth noting that even during the less productive autumn and winter months, the output remains relatively substantial due to the location's tropical climate.Panel Installation Considerations
For those planning to install fixed solar panels in Saranay, Cagayan Valley, the optimal tilt angle to maximize year-round energy production is 14 degrees facing South. This angle has been carefully calculated to account for the Earth's elliptical orbit and the specific latitude of the location, ensuring the most efficient capture of solar energy throughout the year.Environmental and Weather Factors
While Saranay's tropical location is generally favorable 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 may lead to reduced solar output due to cloud cover. To mitigate these risks, it's crucial to implement robust installation methods. This includes using sturdy mounting systems designed to withstand high winds, ensuring proper waterproofing of all components, and incorporating lightning protection systems. Regular maintenance and cleaning of panels, especially during the rainy season, can help maintain optimal performance. In conclusion, despite some seasonal variations and potential weather-related challenges, Saranay's location in the Philippines presents a highly favorable setting for year-round solar energy generation. With proper installation and maintenance practices, solar PV systems in this area can provide a reliable and efficient source of renewable energy.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 Saranay
Seasonal solar PV output for Latitude: 16.8046, Longitude: 121.8313 (Saranay, 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 Saranay, Philippines
To maximize your solar PV system's energy output in Saranay, Philippines (Lat/Long 16.8046, 121.8313) 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 Saranay, 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 Saranay, 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 |
|---|---|---|---|
| 0° in Summer | 22° South in Autumn | 32° South in Winter | 10° 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 Saranay, 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 Saranay, 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 Saranay, Philippines
The topography around Saranay, Philippines, is characterized by a diverse landscape that reflects the country's complex geological history. Located in the northern part of Luzon, the largest island in the Philippine archipelago, Saranay is situated in a region known for its varied terrain. The area surrounding Saranay features a mix of gently rolling hills, expansive valleys, and low-lying plains. These landscapes are interspersed with patches of lush tropical forests, particularly in areas with higher elevation. The region is also marked by numerous rivers and streams that wind their way through the countryside, contributing to the area's fertile soil and agricultural potential. To the east of Saranay, the terrain gradually rises towards the Sierra Madre mountain range, which forms a natural barrier along the eastern coast of Luzon. This mountain range influences the local climate and contributes to the region's biodiversity. The western side of Saranay, in contrast, tends to be flatter, with more expansive plains that stretch towards the Cagayan Valley.
Suitable Areas for Large-scale Solar PV
When considering locations for large-scale solar photovoltaic (PV) installations near Saranay, several factors come into play. The most suitable areas would typically be those with ample sunlight exposure, relatively flat terrain, and minimal environmental impact. The expansive plains to the west of Saranay present promising opportunities for solar PV development. These areas often feature open, unobstructed land that receives consistent sunlight throughout the year. The flat terrain also simplifies the installation process and reduces construction costs. Some of the gently rolling hills in the vicinity could also be suitable for solar farms, particularly south-facing slopes that receive optimal sunlight. However, care must be taken to avoid areas with steep inclines or unstable soil conditions. It's important to note that while the region around Saranay has potential for solar energy development, any large-scale project would need to consider factors such as local land use, proximity to power infrastructure, and environmental impact. Areas currently used for agriculture or designated as protected forests would likely be less suitable for solar PV installations. Additionally, locations near existing power lines and substations would be advantageous, as they would reduce the cost and complexity of connecting the solar farm to the grid. Careful site selection and environmental assessment would be crucial to ensure that any solar PV project in the area is both economically viable and environmentally responsible.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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 17th 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.
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.




