In Mueang Samut Prakan, Thailand, situated at latitude 13.5989 and longitude 100.5997, solar power generation is highly feasible due to its tropical climate that ensures abundant sunlight throughout the year. The average energy output in kilowatt-hours per day for each kilowatt of installed solar capacity fluctuates slightly with the changing seasons: it stands at 5.91 in summer, drops to 5.02 in autumn, rises again to reach 5.97 in winter and peaks at 6.05 during spring.
The optimal tilt angle for fixed panel installations here is towards the South at an inclination of 13 degrees which maximizes exposure to sunlight and thus enhances energy production efficiency.
However, while this location's tropical climate largely favors solar power generation, seasonal variations - particularly the wet season - could pose challenges due to increased cloud cover and rainfall potentially reducing solar irradiance levels on panels; wind could also be a factor if it's strong enough to cause physical damage or dirtying of panels which can reduce their efficiency.
As preventive measures against these potential impediments, installation designs can incorporate weather-resistant materials and structures that withstand heavy rainfalls or high winds without compromising performance; regular cleaning schedules should also be put in place to ensure panels are kept free from dust or debris accumulation that could obstruct sunlight penetration.
It's worth noting that despite these potential challenges inherent with weather conditions typical for this region of Thailand, they do not significantly impact overall annual performance as evidenced by the high daily kWh per kW averages across all seasons mentioned earlier - indicating Mueang Samut Prakan as a potent location for harnessing solar power effectively year-round.
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 88 locations across Thailand. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Thailand by location
Solar output per kW of installed solar PV by season in Mueang Samut Prakan
Seasonal solar PV output for Latitude: 13.5989, Longitude: 100.5997 (Mueang Samut Prakan, Thailand), 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 13° South in Mueang Samut Prakan, Thailand
To maximize your solar PV system's energy output in Mueang Samut Prakan, Thailand (Lat/Long 13.5989, 100.5997) throughout the year, you should tilt your panels at an angle of 13° 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 Mueang Samut Prakan, Thailand
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 Mueang Samut Prakan, Thailand. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 13° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 3° 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 Mueang Samut Prakan, Thailand
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 Mueang Samut Prakan, Thailand.
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 Mueang Samut Prakan, Thailand
The topography around Mueang Samut Prakan, Thailand is relatively flat with some small hills. The area is mostly agricultural land and there are several large open fields that would be ideal for large-scale solar PV installations. There are also some areas of lowland forest which could provide additional space for solar arrays. Nearby areas such as Bang Bo District, Phra Pradaeng District, and Bang Sao Thong District would all be suitable for large-scale solar PV projects due to their generally flat terrain and ample open spaces.
Thailand solar PV Stats as a country
Thailand ranks 26th in the world for cumulative solar PV capacity, with 3,049 total MW's of solar PV installed. This means that 2.90% of Thailand's total energy as a country comes from solar PV (that's 29th in the world). Each year Thailand is generating 44 Watts from solar PV per capita (Thailand ranks 54th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Thailand?
Yes, there are several incentives for businesses wanting to install solar energy in Thailand. The Thai government offers a number of tax incentives and subsidies for businesses that install solar energy systems. These include a 30% corporate income tax deduction on the cost of installing solar panels, as well as an exemption from import duties on certain components used in the installation process. Additionally, businesses can benefit from net metering policies which allow them to sell excess electricity generated by their solar system back to the grid at a premium rate. Finally, businesses may also be eligible for grants and other financial assistance from various government agencies and private organizations.
Do you have more up to date information than this on incentives towards solar PV projects in Thailand? 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: Sunday 24th of December 2023
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.




