Goa, Bicol Region, Philippines, located at 13.6938° N, 123.4959° E, presents a promising location for solar energy generation. This tropical area benefits from consistent sunlight throughout the year, with seasons primarily characterized by wet and dry periods rather than traditional temperature-based seasons.

Seasonal Solar Performance

The solar energy potential in Goa varies across the meteorological seasons. Spring stands out as the most productive period, with an impressive 6.27 kWh per day for each kilowatt of installed solar capacity. Summer follows closely, generating 5.63 kWh/day. Autumn sees a slight decrease to 4.72 kWh/day, while winter experiences the lowest output at 4.04 kWh/day. These figures indicate that Goa maintains a relatively high solar energy potential throughout the year, with only moderate fluctuations between seasons. The consistent tropical sunlight contributes to this stable performance, making it an attractive location for year-round solar energy production.

Optimal Panel Positioning

For fixed solar panel installations in Goa, Bicol Region, the ideal tilt angle to maximize year-round energy production is 11 degrees facing South. This angle has been calculated considering various factors, including daily solar elevation angles, optimal panel tilt, and weighted by daily photovoltaic potential using NASA's solar irradiance data.

Environmental Considerations

While Goa's 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 region experiences a pronounced rainy season, which could temporarily reduce solar efficiency. To mitigate these risks, several preventative measures can be implemented:

• Use sturdy mounting systems designed to withstand high winds
• Install protective covers or tilt mechanisms to shield panels during extreme weather
• Implement regular maintenance to ensure panels are clean and free from debris
• Consider micro-inverter systems to minimize the impact of partial shading

By addressing these factors, solar installations in Goa can maintain high energy production levels and longevity, taking full advantage of the area's excellent solar potential.

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 Goa

Seasonal solar PV output for Latitude: 13.6938, Longitude: 123.4959 (Goa, 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 11° South in Goa, Philippines

To maximize your solar PV system's energy output in Goa, Philippines (Lat/Long 13.6938, 123.4959) throughout the year, you should tilt your panels at an angle of 11° 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 Goa, 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 Goa, Philippines. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 11° 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	19° 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 Goa, 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 Goa, 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 Goa, Philippines

The topography around Goa, Philippines, located at 13.6938 latitude and 123.4959 longitude, is characterized by a diverse landscape that includes coastal plains, rolling hills, and mountainous terrain. This region is situated on the eastern coast of Luzon Island, facing the Philippine Sea. The immediate vicinity of Goa features relatively flat coastal areas that gradually transition into gently sloping hills as you move inland. These coastal plains are interspersed with small rivers and streams that flow from the higher elevations towards the sea. The soil in this area is generally fertile, supporting various agricultural activities. As you move further inland, the terrain becomes more undulating, with low to medium-elevation hills dominating the landscape. These hills are often covered in lush vegetation, including tropical forests and grasslands. The elevation gradually increases as you progress westward, eventually leading to the foothills of the Bicol Peninsula's central mountain range.

Potential Areas for Large-Scale Solar PV

When considering suitable areas for large-scale solar photovoltaic (PV) installations near Goa, the most promising locations would be the relatively flat coastal plains and gently sloping hillsides. These areas offer several advantages for solar energy production: Firstly, the coastal plains provide ample open space with minimal shading from natural features, allowing for maximum sun exposure throughout the day. The flat terrain also simplifies the installation process and reduces construction costs. Secondly, the gently sloping hills near the coast could be ideal for solar farms, as they often receive consistent sunlight and have good drainage. These areas may also benefit from sea breezes, which can help keep solar panels cool and operating efficiently. It's important to note that while the mountainous regions further inland may have some suitable sites, they generally present more challenges for large-scale solar installations due to their rugged terrain and potential shading from nearby peaks. When selecting specific sites for solar PV projects, factors such as proximity to existing power infrastructure, land ownership, and environmental considerations would need to be carefully evaluated. Additionally, local weather patterns, including the frequency of typhoons in the region, should be taken into account to ensure the long-term viability and safety of any large-scale solar 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.