Solar PV Analysis of Ko Pha Ngan, Thailand
Ko Pha Ngan, Surat Thani, Thailand is a good location for generating solar energy year-round due to its tropical climate with consistent sunlight throughout most of the year. The amount of electricity that can be produced from each kilowatt (kW) of installed solar panels varies by season: 5.76 kilowatt-hours (kWh) per day in summer, 4.58 kWh/day in autumn, 5.43 kWh/day in winter and 6.29 kWh/day in spring.
Spring seems to be the best time for generating solar energy at this location because more electricity is produced during this season compared to others. However, even during other seasons like autumn when production is slightly lower, it's still quite reasonable and makes the use of solar panels worthwhile.
For maximum efficiency all year round at Ko Pha Ngan, Surat Thani, it's recommended that fixed panel installations are tilted at an angle of 8 degrees towards the south.
There could potentially be some local factors that might impede solar production such as heavy rainfall or cloud cover especially during wet seasons which could reduce sunlight exposure on the panels. Also dust or dirt accumulation on the panels over time could affect their performance.
To ensure greater energy production despite these challenges:
1) Regular cleaning and maintenance should be done to remove any dust or dirt on the surface of the panels.
2) If possible install trackers which allow your solar panels to move with sun increasing their exposure.
3) Install a system for efficient water runoff so rainwater doesn't accumulate and block sunlight.
4) Consider using high-efficiency modules designed to perform well under less-than-ideal light conditions if cloud cover is frequent.
In conclusion, while there might be some minor obstacles affecting optimal functioning of PV systems in Ko Pha Ngan due its tropical weather conditions; overall it’s an excellent place for harnessing renewable energy from sun owing to its consistent sunlight availability throughout most part of year making it ideal for solar energy generation.
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 Ko Pha Ngan
Seasonal solar PV output for Latitude: 9.7167, Longitude: 100 (Ko Pha Ngan, 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 8° South in Ko Pha Ngan, Thailand
To maximize your solar PV system's energy output in Ko Pha Ngan, Thailand (Lat/Long 9.7167, 100) throughout the year, you should tilt your panels at an angle of 8° 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 Ko Pha Ngan, 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 Ko Pha Ngan, Thailand. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 8° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 6° North in Summer | 15° South in Autumn | 25° South in Winter | 4° 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 Ko Pha Ngan, 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 Ko Pha Ngan, 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 Ko Pha Ngan, Thailand
Ko Pha Ngan, Thailand is an island situated in the Gulf of Thailand. The topography of this area is characterized by tropical landscapes with sandy beaches along the coastline and hilly terrains covered with dense forests inland. The highest point on the island is Khao Ra, which reaches 627 meters above sea level.
For large-scale solar PV installations, flat or gently sloping areas are typically most suitable as they require less site preparation and can accommodate more solar panels per unit area. Given this, coastal plains could potentially be a good option for such a project in Ko Pha Ngan.
However, several factors need to be considered before setting up a large-scale solar PV system:
1) Sunlight: Areas that receive abundant sunlight throughout the year would be best suited for solar power generation. This region being near the equator receives ample sunlight.
2) Land use: It's important to consider existing land uses and environmental impacts. As Ko Pha Ngan is known for its natural beauty and tourism industry, it’s crucial to ensure that any development doesn't negatively impact these aspects.
3) Infrastructure: Proximity to existing power infrastructure (e.g., transmission lines) can significantly influence project feasibility due to reduced costs associated with connecting the system to the grid.
4) Regulations: Local regulations related to land use and renewable energy projects will also play a key role in determining where such a project could be located.
Given these considerations, while there may technically be suitable topographical locations on or around Ko Pha Ngan for large scale solar PV systems; economic viability, environmental impact assessments and local regulations will ultimately determine their feasibility.
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: Tuesday 11th of June 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.
