Solar PV Analysis of Ganemulla, Sri Lanka
Ganemulla, Western Province, Sri Lanka, is a good location for solar energy production throughout the year due to its tropical climate. The sunlight is consistent most of the time and there are no significant seasonal changes that could affect solar energy production.
The amount of electricity produced by each kilowatt of installed solar power varies slightly with each season: during summer it's 6.31 kilowatt-hours per day; in autumn it drops slightly to 5.65 kWh/day; in winter it goes up again to 6.24 kWh/day; and in spring, it's at its highest at 6.55kWh/day.
This means that all seasons are suitable for solar power generation but spring would yield the highest output followed closely by summer and winter while autumn would produce slightly less.
To maximize total year-round production from your solar panels, you should tilt them at an angle of 6 degrees towards the south if they're installed at a fixed position.
However, there might be some local factors that could potentially impede solar production such as heavy rainfall or cloud cover during monsoon seasons or dust accumulation on panels which can reduce their efficiency.
To combat these issues:
1) Install a system to automatically adjust panel angles according to the sun’s position throughout different times of day/year (if financially viable). This will ensure optimal exposure even during less sunny periods.
2) Regular cleaning/maintenance schedule should be set up to keep panels free from dust or debris which can block sunlight.
3) If possible install your system on elevated structures or rooftops where they’re less likely affected by shadowing from nearby trees/buildings etc., and also safe from potential flooding damage during heavy rains.
4) Use high-quality PV modules designed specifically for tropical climates - these often have better resistance against moisture penetration & corrosion caused by high humidity levels common in such regions.
Remember though that while these measures can help optimize your system performance, the actual output will still largely depend on daily weather conditions which are beyond our control.
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 109 locations across Sri Lanka. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Sri Lanka by location
Solar output per kW of installed solar PV by season in Ganemulla
Seasonal solar PV output for Latitude: 7.0682, Longitude: 79.967 (Ganemulla, Sri Lanka), 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 Ganemulla, Sri Lanka
To maximize your solar PV system's energy output in Ganemulla, Sri Lanka (Lat/Long 7.0682, 79.967) 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 Ganemulla, Sri Lanka
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 Ganemulla, Sri Lanka. 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 | 12° South in Autumn | 22° South in Winter | 1° 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 Ganemulla, Sri Lanka
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 Ganemulla, Sri Lanka.
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 Ganemulla, Sri Lanka
Ganemulla is located in the Gampaha District of the Western Province of Sri Lanka. The topography around Ganemulla is relatively flat with slight undulations, and it consists mainly of urban areas and agricultural lands.
For large-scale solar photovoltaic (PV) installations, open and flat terrains are ideal as they provide maximum exposure to sunlight without obstructions. Therefore, unused or less productive agricultural lands around Ganemulla could be potential sites for setting up large-scale solar PV systems.
However, it's important to note that implementing such projects would require careful consideration of various factors like land ownership rights, impact on local ecosystems and communities etc. Also, a detailed sun path analysis along with seasonal weather patterns should be studied to ensure optimal performance of the solar PV system.
Moreover, rooftops in urban areas within Ganemulla can also be utilized for installing smaller scale solar PV systems which collectively can contribute significantly towards renewable energy generation. These types of distributed generation not only reduce transmission losses but also help in managing peak load demands efficiently.
The nearby area Negombo has a lot of open spaces and lagoons which might be suitable for floating Solar PVs assuming environmental concerns are taken care off.
Remember that these are general considerations - any specific project would need a detailed feasibility study considering all technical, social-economic & environmental aspects.
Sri Lanka solar PV Stats as a country
Sri Lanka ranks 55th in the world for cumulative solar PV capacity, with 434 total MW's of solar PV installed. Each year Sri Lanka is generating 20 Watts from solar PV per capita (Sri Lanka ranks 66th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Sri Lanka?
Yes, there are incentives for businesses wanting to install solar energy in Sri Lanka. The government of Sri Lanka has implemented a number of policies and programs to promote the use of renewable energy sources such as solar power. These include tax exemptions, subsidies, and other financial incentives for businesses that install solar systems. Additionally, the government has set up a Renewable Energy Fund which provides grants to support research and development activities related to renewable energy technologies.
Do you have more up to date information than this on incentives towards solar PV projects in Sri Lanka? 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: Monday 13th 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.
