Tanauan, Calabarzon, Philippines is a good location for year-round solar energy production due to its tropical climate. This means it receives consistent sunlight throughout most of the year, which is crucial for generating solar power. The amount of electricity that can be produced depends on the season: in summer you can expect about 5.18 kilowatt-hours (kWh) per day per kilowatt (kW) of installed solar panels; in autumn it's around 4.40 kWh/day/kW; in winter it's slightly less at 3.98 kWh/day/kW; and spring has the highest potential with around 6.17 kWh/day/kW.
The best times to generate solar power at this location would be during spring and summer when sunlight is plentiful and energy output is high.
For a fixed panel installation at this location, tilting your panels at an angle of 12 degrees towards the south will maximize total year-round production from your solar photovoltaic (PV) system.
However, there could potentially be local factors that might impede solar production such as heavy rainfall or cloud cover during monsoon seasons or typhoons which are common weather events in the Philippines. These weather conditions may lead to less sunlight reaching your panels thereby reducing their efficiency.
To counter these issues, consider installing adjustable tilt mounts so you can change the angle of your panels depending on the time of year and expected weather conditions - this helps ensure maximum sun exposure throughout different seasons or weather events. Regular cleaning and maintenance also help keep your system running efficiently by preventing dirt buildup which could block sunlight from reaching your panels.
Also remember to install durable systems that are designed to withstand heavy rains or strong winds common during typhoon season – ensuring greater longevity and consistent performance under adverse weather conditions.
Overall, Tanauan offers a favourable environment for harnessing solar energy provided necessary precautions are taken against potential challenges posed by local environmental factors.
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 Tanauan
Seasonal solar PV output for Latitude: 14.0868, Longitude: 121.1539 (Tanauan, 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 12° South in Tanauan, Philippines
To maximize your solar PV system's energy output in Tanauan, Philippines (Lat/Long 14.0868, 121.1539) throughout the year, you should tilt your panels at an angle of 12° 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 Tanauan, 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 Tanauan, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 12° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 2° North in Summer | 20° South in Autumn | 29° South in Winter | 7° 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 Tanauan, 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 Tanauan, 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 Tanauan, Philippines
Tanauan, Philippines is located in the province of Batangas. The topography of this area is generally flat with some gently rolling hills. It's also surrounded by bodies of water such as Taal Lake and Balayan Bay.
The climate in Tanauan is tropical, with a significant amount of rainfall throughout the year. This means that while there may be plenty of sunlight for solar PV, cloud cover and rain could potentially impact efficiency.
For large-scale solar PV installations, areas that are most suitable would be those with a lot of open and flat land to accommodate large arrays of solar panels. Considering this, agricultural lands or unused lands around the city might be good options given they have less shade from buildings or trees.
However, it's important to note that using agricultural land for energy production should not compromise food security in the region. Therefore, careful planning and assessment would need to be done beforehand to ensure sustainability.
Areas near industrial zones may also be suitable as they often have ample space for large installations and proximity can reduce transmission losses when supplying these industries with power.
Additionally, installing floating solar panels on nearby bodies of water like Taal Lake could also be an option if land availability is a concern; however this comes with its own set of environmental considerations which must carefully evaluated.
In any case detailed site-specific studies including solar irradiance measurements would need to conducted before determining suitability for large scale Solar PV projects.
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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 10th of May 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.
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.




