Solar PV Analysis of Phatthalung, Thailand
Phatthalung, Thailand is a good location for generating solar energy all year round due to its tropical climate. This means that it gets consistent sunlight throughout most of the year, which is crucial for solar power generation.
The amount of electricity produced by each kilowatt (kW) of installed solar panels varies slightly with the seasons. In summer, you can expect about 5.67 kilowatt-hours (kWh) per day, in autumn around 4.71 kWh/day, in winter approximately 5.31 kWh/day and in spring about 6.29 kWh/day.
Spring appears to be the best time of year for solar energy production at this location because it has the highest daily output per kW of installed solar panels.
For a fixed panel installation at this location, tilting your panels at an angle of 6 degrees South will help maximise your total yearly production from your photovoltaic (PV) system as it takes into account the position and movement of the sun relative to this specific geographical location.
When considering any local factors that might affect solar production here, one significant aspect could be weather conditions since Phatthalung experiences both wet and dry seasons typical to tropical climates. During rainy or cloudy periods there may be less sunlight available for energy generation.
To counteract these potential issues caused by bad weather conditions during certain times of the year - typically during monsoon season - you could consider installing additional capacity so that enough power can still be generated even when sunlight availability is reduced.
Also ensuring regular maintenance checks on your PV system will help prevent damage from heavy rains or storms and keep them operating efficiently all year round despite seasonal variations in weather conditions.
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 Phatthalung
Seasonal solar PV output for Latitude: 7.6219, Longitude: 100.0788 (Phatthalung, 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 6° South in Phatthalung, Thailand
To maximize your solar PV system's energy output in Phatthalung, Thailand (Lat/Long 7.6219, 100.0788) throughout the year, you should tilt your panels at an angle of 6° 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 Phatthalung, 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 Phatthalung, Thailand. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 6° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 9° North in Summer | 13° South in Autumn | 22° South in Winter | 2° 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 Phatthalung, 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 Phatthalung, 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 Phatthalung, Thailand
Phatthalung, Thailand is located in the Southern region of the country. The topography of this area is generally flat with low-lying plains, although there are some hilly areas to the north and west. It's surrounded by Songkhla Lake on its east side and several small rivers flow through it. The region has a tropical rainforest climate which means it gets good sunlight throughout the year.
In terms of large-scale solar PV installations, flat areas would be most suitable as they provide easy installation and maintenance access. Therefore, agricultural lands or unused flat terrains around Phatthalung could potentially be used for solar power generation.
However, it's important to note that while Phatthalung does receive significant sunlight due to its tropical location, factors such as cloud cover and rainfall can affect solar power production. Moreover, any potential environmental impact should also be considered before developing large-scale solar projects.
The exact locations for installing these systems should therefore be decided after conducting a detailed site survey including aspects like land availability & cost, grid connectivity possibilities, local legislation regarding renewable energy projects among others.
Remember that while geographical coordinates provide an idea about general topography & climate of a place; actual suitability for setting up a large scale Solar PV plant depends on various other macro & micro level factors which need thorough investigation by experts in this field.
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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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 19th 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.
