Pathum Thani, Thailand, located at 14.0435° N, 100.6421° E, offers a promising environment for solar energy generation throughout the year. This tropical location benefits from consistent sunlight, with seasons characterized more by wet and dry periods rather than traditional temperature-based seasons.

Seasonal Solar Performance

The solar energy potential in Pathum Thani demonstrates relatively stable output across all seasons. Spring yields the highest production at 6.06 kWh per day for each kilowatt of installed solar capacity. Summer follows closely with 5.94 kWh/day, while winter maintains a strong output of 5.84 kWh/day. Autumn experiences a slight dip but still delivers a respectable 4.99 kWh/day. This consistency in solar output makes Pathum Thani an ideal location for year-round solar energy generation. The minimal fluctuation between seasons ensures a reliable power supply, with peak performance occurring during the spring months.

Optimal Panel Installation

For fixed panel installations in Pathum Thani, the ideal tilt angle to maximize year-round solar production is 13 degrees facing South. This angle has been calculated to optimize energy capture across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.

Environmental Considerations

While Pathum Thani's tropical climate is generally favorable for solar energy production, there are some environmental factors to consider: 1. Monsoon season: Heavy rainfall during the wet season (typically May to October) may temporarily reduce solar output. 2. High humidity: The tropical climate's humidity can lead to increased dust accumulation on panels, potentially affecting efficiency. To mitigate these factors, consider the following preventative measures:

• Install panels at the recommended 13-degree tilt to promote natural cleaning during rainfall.
• Implement a regular cleaning schedule, especially during drier periods, to remove dust and debris.
• Use high-quality, weather-resistant solar panels designed for tropical climates.
• Ensure proper drainage systems are in place to prevent water accumulation near the installation.

By addressing these considerations, solar installations in Pathum Thani can maintain high efficiency and capitalize on the location's excellent year-round 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 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 Pathum Thani

Seasonal solar PV output for Latitude: 14.0435, Longitude: 100.6421 (Pathum Thani, 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 Pathum Thani, Thailand

To maximize your solar PV system's energy output in Pathum Thani, Thailand (Lat/Long 14.0435, 100.6421) 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 Pathum Thani, 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 Pathum Thani, 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
2° North in Summer	20° South in Autumn	30° 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 Pathum Thani, 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 Pathum Thani, 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.

Topography for solar PV around Pathum Thani, Thailand

The topography around Pathum Thani, Thailand, is characterized by its predominantly flat terrain. This area is part of the vast Central Plains region of Thailand, which is known for its low-lying landscape. The province is situated in the Chao Phraya River basin, with the river itself flowing through the western part of Pathum Thani. The elevation in this region is generally very low, typically ranging from just a few meters above sea level to around 10 meters at its highest points. The flat nature of the land is a result of centuries of sediment deposition from the Chao Phraya River and its tributaries. This has created a fertile alluvial plain that has long been ideal for agriculture, particularly rice cultivation. The area is crisscrossed by numerous canals and smaller waterways, which have historically been used for irrigation and transportation.

Suitability for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The flat terrain of Pathum Thani and its surrounding provinces offers advantages for solar energy development. Large, open spaces with minimal shading from natural features like hills or mountains are ideal for maximizing solar exposure throughout the day. Areas to the east and northeast of Pathum Thani, particularly in the neighboring provinces of Chachoengsao and Prachinburi, might be well-suited for large-scale solar PV projects. These regions tend to have more available land that is less densely populated and less intensively used for agriculture compared to the immediate vicinity of Pathum Thani. The provinces to the north, such as Ayutthaya and Saraburi, also offer potential for solar development. These areas have a similar flat topography and may have parcels of land that are less flood-prone, which is an important consideration given the low-lying nature of the Central Plains. It's worth noting that while the topography is favorable, other factors such as land ownership, proximity to electrical infrastructure, and local environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar PV installations. Additionally, areas that are currently used for less productive agriculture or have been set aside for industrial development might be prime candidates for solar energy projects, as they could provide economic benefits without significantly impacting food production or natural habitats.

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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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.