Solar PV Analysis of Katunayaka, Sri Lanka
Katunayaka, Western Province, Sri Lanka is a pretty good location for generating solar energy all year round. This is because it's in the tropics where sunlight is consistent most of the year. The amount of electricity you can expect to get from each kilowatt (kW) of installed solar panels varies slightly by season: 6.31 kilowatt-hours (kWh) per day in summer, 5.65 kWh/day in autumn, 6.24 kWh/day in winter and 6.55 kWh/day in spring.
This means that while there's some variation across seasons, the drop during autumn isn't too drastic and overall, you can still generate a decent amount of power throughout the year.
If you're installing fixed panel solar installations at this location, tilting them at an angle of 7 degrees to the South would be best for maximizing total production all-year-round.
However, local factors like weather conditions could affect how much energy your panels produce. For example heavy rainfall or monsoon-like conditions typical to tropical climates might decrease output due to cloud cover blocking sunlight reaching your panels or physical damage from severe weather events.
To minimize these potential issues:
1) You should ensure your installation includes robust mounting systems which can withstand high wind speeds.
2) Regular maintenance checks are also crucial for early detection and repair of any damages.
3) Installations should ideally be placed on higher ground or areas less prone to flooding.
4) Using micro-inverters may also help as they allow each individual panel to operate independently - so if one gets shaded or damaged others will continue producing power optimally.
In summary Katunayaka is generally suitable for consistent solar power generation throughout the year with slight seasonal variations; however attention must be given towards mitigating potential risks posed by local weather conditions through proper planning and maintenance practices when setting up your system!
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 Katunayaka
Seasonal solar PV output for Latitude: 7.1638, Longitude: 79.8725 (Katunayaka, 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 7° South in Katunayaka, Sri Lanka
To maximize your solar PV system's energy output in Katunayaka, Sri Lanka (Lat/Long 7.1638, 79.8725) throughout the year, you should tilt your panels at an angle of 7° 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 Katunayaka, 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 Katunayaka, Sri Lanka. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 7° 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 | 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 Katunayaka, 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 Katunayaka, 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 Katunayaka, Sri Lanka
Katunayaka is located in the western province of Sri Lanka, near the coast. The topography of this area is largely flat with a few gently rolling hills. The region has a tropical monsoon climate and receives ample sunlight throughout the year, which makes it potentially suitable for solar PV installations.
The coastal plains surrounding Katunayaka could be ideal locations for large-scale solar PV systems due to their flat terrain and high sun exposure. Additionally, areas such as Negombo and Ja-Ela that are nearby also have similar topographical features conducive for solar energy production.
However, it's important to note that while these areas may be geographically suited for large-scale solar PV systems, there are other factors to consider like land use policies, environmental impact assessments and local community acceptance. It would also be crucial to study the patterns of cloud cover and rainfall in these regions as they can affect the efficiency of solar panels.
Furthermore, if we were looking at offshore possibilities then shallow waters around could also provide potential locations for floating photovoltaic (FPV) systems.
Before any project initiation though detailed feasibility studies including technical analysis would need to be conducted by professionals in renewable energy sector.
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: Tuesday 14th 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.
