Solar PV Analysis of Mangaldai, India
Mangaldai, Assam, India, situated in the Northern Sub Tropics, offers a promising location for solar energy generation throughout the year. With its geographical coordinates at 26.4412° N latitude and 92.0264° E longitude, this region experiences varying levels of solar potential across different seasons.
Seasonal Solar Performance
The solar energy output in Mangaldai fluctuates across the four meteorological seasons. Spring emerges as the most productive period, with an impressive 5.48 kWh per day for each kilowatt of installed solar capacity. Autumn follows closely, generating 4.97 kWh/day, while summer yields 4.63 kWh/day. Winter, although less productive, still manages a respectable 4.11 kWh/day.
These figures indicate that Mangaldai maintains a relatively consistent solar energy potential throughout the year, with spring and autumn being particularly favorable for solar power generation. The minimal variation between seasons suggests that solar installations in this area can provide a steady energy supply across all months.
Optimal Panel Installation
For those considering a fixed panel installation in Mangaldai, Assam, the ideal tilt angle to maximize year-round solar production is 25 degrees facing South. This angle has been carefully calculated to account for the Earth's elliptical orbit and the specific latitude of the location, ensuring optimal exposure to sunlight throughout the year.
Environmental Considerations
While Mangaldai presents favorable conditions for solar energy production, there are some environmental factors to consider. The region experiences a monsoon climate, which can lead to periods of heavy rainfall and cloud cover, potentially reducing solar efficiency during these times. Additionally, the area may be prone to dust accumulation on panels due to its subtropical location.
To mitigate these challenges, several preventative measures can be implemented during solar installation:
- Use of high-quality, water-resistant solar panels to withstand monsoon conditions
- Installation of an efficient drainage system to prevent water accumulation on panels
- Regular cleaning and maintenance schedules to address dust accumulation
- Consideration of tracking systems to maximize sun exposure during cloudy periods
By addressing these factors, solar installations in Mangaldai can maintain high levels of energy production throughout the year, making it an ideal location for harnessing solar power.
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.
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 Mangaldai
Seasonal solar PV output for Latitude: 26.4412, Longitude: 92.0264 (Mangaldai, 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 25° South in Mangaldai, India
To maximize your solar PV system's energy output in Mangaldai, India (Lat/Long 26.4412, 92.0264) throughout the year, you should tilt your panels at an angle of 25° 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 Mangaldai, 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 Mangaldai, India. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 25° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 10° South in Summer | 32° South in Autumn | 42° South in Winter | 20° 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 Mangaldai, 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 Mangaldai, 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 Mangaldai, India
The topography around Mangaldai, India, is characterized by a mix of flat plains and gently rolling terrain. This area is situated in the Brahmaputra Valley, which is known for its wide, fertile lowlands. To the north of Mangaldai, the land gradually rises towards the foothills of the Himalayas, while to the south, it remains relatively flat as it extends towards the Brahmaputra River.
The immediate vicinity of Mangaldai consists of agricultural lands, small settlements, and scattered patches of vegetation. The terrain is generally low-lying, with elevations ranging from about 50 to 100 meters above sea level. This flat to slightly undulating landscape is interspersed with numerous small rivers and streams that flow southward, eventually joining the Brahmaputra.
For large-scale solar PV installations, the areas most suited would be the open, flat lands to the south and southeast of Mangaldai. These regions offer several advantages for solar energy development:
- They have minimal shading from hills or mountains, allowing for maximum sunlight exposure throughout the day.
- The flat terrain reduces the need for extensive land preparation and makes construction and maintenance easier.
- There are fewer dense settlements in these areas, potentially minimizing land acquisition challenges.
- The proximity to the Brahmaputra River could provide a water source for panel cleaning and maintenance.
However, it's important to note that some of these areas may be prone to seasonal flooding due to their proximity to the Brahmaputra and its tributaries. Therefore, careful site selection and appropriate flood mitigation measures would be necessary for any large-scale solar PV project in this region.
Additionally, areas slightly to the north of Mangaldai, where the land begins to rise towards the Himalayan foothills, could also be considered. These locations might offer better drainage and reduced flood risk, although they may require more complex construction techniques due to the slightly more varied terrain.
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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 18th of July 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.
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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.
