Mapusa, Goa, India, located at 15.5906° N, 73.8105° E, offers a promising environment for solar energy generation throughout the year. This tropical location benefits from consistent sunlight and distinct wet and dry seasons, making it an attractive site for solar PV installations.

Seasonal Solar Performance

The solar energy output in Mapusa varies across seasons, with spring being the most productive period. Here's a breakdown of the expected daily electricity output per kW of installed solar capacity: • Spring: 6.69 kWh/day • Winter: 5.57 kWh/day • Autumn: 5.16 kWh/day • Summer: 4.76 kWh/day Spring emerges as the ideal time for solar energy generation, with winter following closely behind. The higher output during these seasons can be attributed to clearer skies and optimal sun angles.

Optimal Panel Tilt

For fixed panel installations in Mapusa, Goa, the ideal tilt angle to maximize year-round solar production is 15 degrees facing South. This angle has been calculated considering the location's latitude, daily solar elevation angles, and weighted by NASA's solar irradiance data.

Environmental Considerations

While Mapusa's location is generally favorable for solar energy production, there are some environmental factors to consider: Monsoon Season: The region experiences heavy rainfall during the monsoon months (typically June to September), which could potentially reduce solar output due to increased cloud cover and reduced sunlight. To mitigate this, installing high-quality, water-resistant solar panels and ensuring proper drainage systems are in place is crucial. Coastal Proximity: Mapusa's proximity to the coast means solar installations may be exposed to salt spray, which can corrode equipment over time. Using corrosion-resistant materials and applying protective coatings to solar panels and mounting structures can help prevent damage. Dust and Pollution: The area may experience dust accumulation on solar panels, particularly during the dry season. Regular cleaning and maintenance of panels can help maintain optimal efficiency. Additionally, installing panels at a slight angle (as recommended) can aid in natural cleaning during rainfall. Vegetation Growth: The tropical climate promotes rapid vegetation growth, which could potentially shade solar panels over time. Regular landscaping maintenance and strategic placement of solar arrays away from tall trees or fast-growing plants can help maximize sun exposure. By addressing these environmental factors through proper planning and preventative measures, solar PV installations in Mapusa can achieve optimal energy production throughout the year, taking full advantage of the location's abundant sunlight and favorable conditions.

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 Mapusa

Seasonal solar PV output for Latitude: 15.5906, Longitude: 73.8105 (Mapusa, 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 15° South in Mapusa, India

To maximize your solar PV system's energy output in Mapusa, India (Lat/Long 15.5906, 73.8105) throughout the year, you should tilt your panels at an angle of 15° 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 Mapusa, 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 Mapusa, India. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 15° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
0° in Summer	22° South in Autumn	31° South in Winter	9° 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 Mapusa, 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 Mapusa, India.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Mapusa, India

The topography around Mapusa, India, is characterized by a diverse landscape that transitions from coastal plains to rolling hills as you move inland. Mapusa itself is situated in the North Goa district, relatively close to the Arabian Sea coast.

Near the coast, the terrain is predominantly flat, with sandy beaches and low-lying areas. As you move slightly inland, where Mapusa is located, the landscape becomes gently undulating with small hills and shallow valleys. This area is part of the larger Konkan coastal plain.

Further east of Mapusa, the terrain gradually becomes more hilly as it approaches the Western Ghats mountain range. These hills are generally not very high in the immediate vicinity of Mapusa but become more pronounced and steeper as you travel eastward.

The region around Mapusa is also characterized by numerous small rivers and streams that flow westward from the hills towards the Arabian Sea. These waterways have shaped the local topography, creating fertile valleys and occasional floodplains.

Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, the following considerations are important:

The relatively flat or gently sloping areas to the west and southwest of Mapusa would likely be the most suitable for solar PV projects. These areas receive ample sunlight and have fewer obstructions from hills or dense vegetation. The coastal plains, particularly those not prone to flooding or storm surges, could offer good potential.

Some of the more open, elevated areas on the hills to the east of Mapusa might also be suitable, as they would receive good sun exposure throughout the day. However, care would need to be taken to avoid areas with steep slopes or dense forest cover.

It's important to note that while the topography is favorable in many areas, other factors such as land availability, proximity to the power grid, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar PV installations near Mapusa.

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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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.