The location of Manakala, Kerala, India, situated at 9.1288° N, 76.7148° E, offers a promising environment for solar energy generation throughout the year. Located in the tropics, this area benefits from consistent sunlight and experiences seasons primarily characterized by wet and dry periods rather than significant temperature variations.
Seasonal Solar Performance
Solar photovoltaic (PV) systems in Manakala demonstrate robust performance across all seasons. Spring stands out as the most productive period, with an impressive daily output of 6.32 kWh per kW of installed capacity. Winter follows closely behind at 6.12 kWh/day, while summer and autumn yield 5.24 kWh/day and 4.77 kWh/day, respectively. This data indicates that Manakala's location is highly favorable for year-round solar energy production. The relatively small variation between seasons suggests a stable and reliable energy output throughout the year, which is advantageous for consistent power supply and grid management.Optimal Panel Positioning
For fixed panel installations in Manakala, Kerala, the ideal tilt angle to maximize year-round solar production is 9 degrees facing South. This angle has been calculated taking into account the location's latitude, the Earth's elliptical orbit, and daily solar elevation angles, weighted by NASA's solar irradiance data.Environmental Considerations
While Manakala's tropical location is generally conducive to solar energy production, there are some environmental factors to consider: 1. Monsoon season: Heavy rainfall during the monsoon months (typically June to September) may temporarily reduce solar output due to cloud cover and reduced sunlight. 2. Humidity: High humidity levels can potentially impact solar panel efficiency and longevity. To mitigate these factors, the following preventative measures can be implemented: - Use high-quality, weather-resistant solar panels designed for tropical climates. - Ensure proper drainage systems are in place to prevent water accumulation on panels. - Implement regular cleaning schedules to remove dust and debris, which can accumulate more quickly in humid environments. - Consider slight adjustments to panel tilt during monsoon season to improve water runoff and maintain efficiency. By addressing these environmental considerations, solar installations in Manakala can maintain high levels of energy production throughout the year, capitalizing on the location's excellent 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 422 locations across India. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in India by location
Solar output per kW of installed solar PV by season in Manakala
Seasonal solar PV output for Latitude: 9.1288, Longitude: 76.7148 (Manakala, India), 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 9° South in Manakala, India
To maximize your solar PV system's energy output in Manakala, India (Lat/Long 9.1288, 76.7148) throughout the year, you should tilt your panels at an angle of 9° 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 Manakala, India
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 Manakala, India. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 7° North in Summer | 15° South in Autumn | 24° 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 Manakala, India
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 Manakala, India.
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 Manakala, India
The topography around Manakala, India, located at coordinates 9.1288°N, 76.7148°E, is characterized by a diverse landscape that transitions from coastal plains to rolling hills as one moves inland. This region, situated in the southern state of Kerala, features a mix of natural and cultivated terrain. Near the coast, the land is relatively flat, with sandy beaches and occasional rocky outcrops. As you move slightly inland, the terrain becomes more undulating, with gentle slopes and small hillocks. This area is predominantly covered by lush vegetation, including coconut groves, rubber plantations, and paddy fields, which are typical of Kerala's tropical climate. Further inland, the landscape becomes more varied, with increasingly steep hills and valleys. These hills are part of the Western Ghats mountain range, which runs parallel to India's western coast. The elevation gradually increases as you move eastward, with some peaks reaching heights of several hundred meters above sea level.
Potential Areas for Large-scale Solar PV
When considering areas suitable for large-scale solar photovoltaic (PV) installations near Manakala, several factors come into play. The most suitable locations would be those that offer a combination of favorable topography, ample sunlight, and minimal environmental impact. The coastal plains and gently rolling hills to the west of Manakala present promising opportunities for solar PV development. These areas typically have fewer obstacles to block sunlight and offer relatively flat terrain, which is ideal for the installation of solar panels. Additionally, the proximity to the coast ensures good exposure to sunlight throughout the year. However, it's important to note that much of this land is currently used for agriculture or is densely populated. Therefore, the most suitable areas for large-scale solar PV would likely be found slightly inland, where there might be more available open space. The hilly regions to the east, while potentially offering some elevated areas with good sun exposure, may present challenges in terms of accessibility and installation. These areas would require careful site selection to balance the benefits of elevation with the practical considerations of construction and maintenance. In conclusion, the most promising areas for large-scale solar PV near Manakala would likely be found in the transitional zones between the coastal plains and the inland hills. These areas could offer a good compromise between favorable topography, sunlight exposure, and land availability, while minimizing disruption to existing agricultural and residential areas.India solar PV Stats as a country
India ranks 5th in the world for cumulative solar PV capacity, with 49,684 total MW's of solar PV installed. This means that 6.50% of India's total energy as a country comes from solar PV (that's 11th in the world). Each year India is generating 36 Watts from solar PV per capita (India ranks 56th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in India?
Yes, there are several incentives for businesses wanting to install solar energy in India. These include:
1. Capital Subsidy: The Ministry of New and Renewable Energy (MNRE) provides a capital subsidy of up to 30% on the cost of installing solar power systems for commercial and industrial establishments.
2. Accelerated Depreciation: Businesses can avail accelerated depreciation benefits under Section 32 of the Income Tax Act, 1961, which allows them to claim tax deductions on investments made in solar projects over a period of five years instead of claiming it all at once.
3. Net Metering: This policy allows businesses to sell excess electricity generated from their rooftop solar system back into the grid at retail rates, thus reducing their electricity bills significantly.
4. Solar Renewable Energy Certificates (SREC): Businesses can earn SRECs by generating renewable energy through their rooftop solar systems and then selling these certificates in the open market or trading platforms like IEX or PXIL at predetermined prices set by state regulatory commissions.
Do you have more up to date information than this on incentives towards solar PV projects in India? Please reach out to us and help us keep this information current. Thanks!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 11th of February 2025
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.




