Solar PV Analysis of Ludhiana, India
Ludhiana, Punjab, India, which lies in the Northern Sub Tropics, is generally a good location for generating energy through solar PV (photovoltaic) systems. This means that you can use solar panels to convert sunlight into electricity.
Over the course of a year, the amount of electricity you can generate varies by season. In summer and spring, when days are longer and sunnier, you can expect to produce around 6kWh per day for each kW of installed solar power. That's quite efficient! In autumn and winter, as days shorten and the sun is less intense, this production drops to about 4.76kWh/day in autumn and even lower to around 3.47kWh/day in winter.
If you're installing fixed solar panels here (that is ones that don't move or track the sun), it's recommended that they be tilted at an angle of roughly 28 degrees facing south for maximum year-round energy production.
However before installing your system there are some local factors that could impact your solar production. These could include environmental elements like air pollution or dust which might block sunlight from reaching your panels; weather conditions such as heavy rain or fog; topography like tall buildings or trees casting shadows over your panels; or other local factors relevant to Ludhiana.
To ensure greater energy production despite these challenges:
1) Regularly clean your panels so dust or dirt doesn't build up.
2) Install them where they won't be overshadowed by buildings or trees.
3) Consider using high-quality PV modules with anti-reflective coating which can perform better under low light conditions.
4) If heavy rainfall is common during certain seasons consider an adjustable tilt mechanism so water doesn’t accumulate on the panel surface.
5) Lastly if air pollution is a significant issue consider systems with advanced filtering technology.
Remember every location will have its pros and cons but overall Ludhiana seems like a good place for solar energy production.
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 Ludhiana
Seasonal solar PV output for Latitude: 31.0048, Longitude: 75.9463 (Ludhiana, 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 28° South in Ludhiana, India
To maximize your solar PV system's energy output in Ludhiana, India (Lat/Long 31.0048, 75.9463) throughout the year, you should tilt your panels at an angle of 28° 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 Ludhiana, 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 Ludhiana, India. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 28° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 15° South in Summer | 37° South in Autumn | 46° South in Winter | 24° 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 Ludhiana, 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 Ludhiana, 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 Ludhiana, India
Ludhiana, located in the Indian state of Punjab, is characterized by an alluvial plain topography. The terrain is generally flat with fertile soils ideal for agriculture. The city lies on the old bank of Sutlej River and has a few small streams.
When considering large-scale solar PV installations, flat terrains are usually preferred as they minimize installation costs and maximize efficiency by reducing shading issues. Given Ludhiana's largely flat terrain, most areas around it could be suitable for such installations.
However, other factors must also be considered including:
1) Solar Insolation: Punjab receives good sunlight throughout the year which makes it suitable for solar energy generation.
2) Land Availability: Large-scale PV requires significant land area. Non-agricultural lands or barren lands would be ideal to avoid conflict with food production.
3) Proximity to Grid: Areas close to existing power grid infrastructure would be more suited as this reduces costs associated with transmitting electricity to where it's needed.
4) Environmental Impact: Any potential environmental impact should also be assessed before installation.
Specific locations would require a detailed site survey but broadly speaking areas outside the main city limits towards north or south could potentially meet these criteria given their relative proximity to transmission infrastructure and lower population density.
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: Monday 18th of March 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.
