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Graph of hourly avg kWh electricity output per kW of Solar PV installed in Lat Bua Luang, Thailand (by season)

Solar Energy Potential in Lat Bua Luang, Phra Nakhon Si Ayutthaya, Thailand

Lat Bua Luang in Thailand offers promising conditions for solar energy generation throughout the year. Located in the tropical region where sunlight remains relatively consistent across seasons, this specific location (14.3302, 99.9158) demonstrates good potential for solar photovoltaic (PV) energy production. The seasonal solar energy output shows interesting patterns. Spring yields the highest production at 6.17 kWh per day for each kilowatt of installed capacity. Winter follows closely with 5.81 kWh/day, while summer produces 5.66 kWh/day. Autumn sees the lowest output at 4.78 kWh/day per kilowatt of installed capacity. For maximizing year-round solar energy production at this location, fixed solar panels should be tilted at 14 degrees facing South. This optimal angle has been calculated specifically for Lat Bua Luang's geographical position to capture the maximum possible solar radiation throughout the year.

Environmental Factors Affecting Solar Production

Several significant environmental factors could impact solar energy generation in Lat Bua Luang:
  • Monsoon seasons bring heavy rainfall, particularly from May to October, which can reduce solar efficiency through cloud cover and physical obstructions on panels
  • High humidity levels (often exceeding 80%) can cause condensation on panels and potentially accelerate degradation of equipment
  • Dust and air pollution from nearby agricultural activities and urban areas can accumulate on panels

Preventative Measures for Optimal Performance

To mitigate these challenges, several practical installation and maintenance approaches are recommended: Installing panels at the specified 14-degree tilt helps with natural cleaning during rainfall while maximizing production. Regular cleaning schedules should be implemented, especially during the dry season when dust accumulation is highest. Using quality waterproof components and proper sealing techniques will protect against humidity damage. Additionally, installing micro-inverters or power optimizers can help minimize production losses when some panels are partially shaded or dirty. A monitoring system will allow for quick identification of performance issues, while slightly elevating the installation height can reduce the impact of potential flooding during extreme monsoon events. With proper installation techniques addressing these regional factors, Lat Bua Luang remains an attractive location for solar energy development, with its strongest production periods occurring during spring and winter months.

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 Lat Bua Luang

Seasonal solar PV output for Latitude: 14.3302, Longitude: 99.9158 (Lat Bua Luang, 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:

Summer
Average 5.66kWh/day in Summer.
Autumn
Average 4.78kWh/day in Autumn.
Winter
Average 5.81kWh/day in Winter.
Spring
Average 6.17kWh/day in Spring.

 

Ideally tilt fixed solar panels 14° South in Lat Bua Luang, Thailand

To maximize your solar PV system's energy output in Lat Bua Luang, Thailand (Lat/Long 14.3302, 99.9158) 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.

The sun
At Latitude: 14.3302, Longitude: 99.9158, the ideal angle to tilt panels is 14° South

Seasonally adjusted solar panel tilt angles for Lat Bua Luang, 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 Lat Bua Luang, Thailand. 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
2° North in Summer 20° South in Autumn 30° South in Winter 8° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Lat Bua Luang, Thailand as follows: In Summer, set the angle of your panels to 2° facing North. In Autumn, tilt panels to 20° facing South for maximum generation. During Winter, adjust your solar panels to a 30° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 8° angle facing South to capture the most solar energy in Lat Bua Luang, Thailand.

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 Lat Bua Luang, 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 Lat Bua Luang, Thailand.

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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Lat Bua Luang, Thailand

The terrain surrounding Lat Bua Luang in Thailand's central region presents a predominantly flat topography characteristic of the Chao Phraya River basin. This district in Phra Nakhon Si Ayutthaya Province sits within Thailand's central plains, an area known for its low-lying landscape with minimal elevation changes. The elevation typically ranges between 5-15 meters above sea level, creating a generally level surface across the region.

Geographical Features

The landscape around Lat Bua Luang consists primarily of agricultural plains, with rice paddies dominating much of the visible terrain. These agricultural areas extend in most directions, creating vast open spaces with unobstructed horizons. The flat nature of this region is a result of sediment deposition from the Chao Phraya River system over millennia, which has created fertile alluvial soils ideal for agriculture. Water features are prominent in this landscape, with numerous irrigation canals, small rivers, and water management systems crisscrossing the area. These waterways serve the extensive rice cultivation that characterizes the region but also fragment the otherwise continuous flat terrain. During monsoon seasons, portions of these lowlands may experience temporary flooding. The immediate vicinity has few significant natural elevations or hills, maintaining a consistent flat profile. Any variations in elevation are typically subtle and gradual rather than dramatic. This contrasts with Thailand's northern regions or western border areas where mountainous terrain predominates.

Solar PV Suitability

The topographical characteristics of areas surrounding Lat Bua Luang offer several advantages for large-scale solar photovoltaic development. The most suitable nearby areas would include: The extensive agricultural plains extending east and southeast of Lat Bua Luang present prime opportunities for solar development. These areas benefit from minimal shading concerns due to the absence of hills or mountains that might cast shadows across potential installation sites. The flat terrain significantly reduces engineering challenges and construction costs associated with land preparation and foundation work. Fallow or less productive agricultural land parcels located within 10-15 kilometers of the main settlement areas provide substantial potential. These locations typically have existing road access, simplifying logistics for construction and maintenance operations, while their distance from densely populated centers minimizes land acquisition complications. The northwestern approaches toward Suphan Buri Province offer expansive open areas with similar flat topography and good infrastructure connections. These areas experience minimal topographical constraints and maintain the favorable conditions found throughout the central plains region. Areas with existing electrical infrastructure connections are particularly advantageous, as the flat landscape has allowed for relatively straightforward power line installation throughout the region. This existing grid proximity reduces interconnection costs for new solar developments. The consistent elevation throughout the region means that virtually any open area with sufficient size could accommodate large-scale solar installations without requiring significant earthworks or specialized mounting systems to compensate for irregular terrain. One consideration for development is the seasonal flooding patterns that affect portions of these lowlands. Solar installations would benefit from slight elevation on platforms or selection of naturally higher ground within the generally flat landscape to mitigate potential flood risks during monsoon seasons.

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!

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Lat Bua Luang, Thailand
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 21st of May 2025
Last Updated: Friday 28th of November 2025

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Compare this location to others worldwide for solar PV potential

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