Solar Energy Potential in Madanpokhara, Lumbini Province, Nepal

The location of Madanpokhara, Lumbini Province, Nepal, situated in the Northern Sub Tropics, offers promising potential for solar energy generation throughout the year. With its geographical coordinates at 27.8147° N latitude and 83.546° E longitude, this area experiences varying levels of solar radiation across different seasons.

Seasonal Solar Output

Solar energy production in Madanpokhara fluctuates across the four meteorological seasons. Spring stands out as the most productive period, with an impressive daily output of 6.40 kWh per kW of installed solar capacity. Autumn follows with 4.80 kWh/day, while summer yields 4.66 kWh/day. Winter sees the lowest production at 4.07 kWh/day, but still maintains a respectable output.

Optimal Panel Tilt

For fixed panel installations in Madanpokhara, Lumbini Province, the ideal tilt angle to maximize year-round solar production is 26 degrees facing South. This angle has been calculated taking into account the location's latitude, daily solar elevation angles, and weighted by NASA's solar irradiance data.

Best Times for Solar Generation

Spring emerges as the prime season for solar energy generation in Madanpokhara, Lumbini Province, with its long daylight hours and clearer skies. Autumn and summer also offer favorable conditions for solar production. While winter shows a slight dip in output, the region's subtropical climate ensures that solar energy remains a viable option year-round.

Environmental Factors and Mitigation

One significant factor that could impact solar production in Madanpokhara is the monsoon season, typically occurring from June to September. Heavy rainfall and increased cloud cover during this period may reduce solar output. To mitigate this:

• Install high-quality, water-resistant solar panels and equipment
• Implement a robust drainage system to prevent water accumulation on panels
• Consider using microinverters or power optimizers to minimize the impact of partial shading

Additionally, the region's mountainous terrain may cast shadows on solar installations at certain times of the day. Conducting a thorough site assessment and carefully planning panel placement can help maximize exposure to sunlight throughout the year. By addressing these factors and implementing appropriate measures, Madanpokhara can effectively harness its substantial solar potential, contributing to a sustainable and renewable energy future.

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 40 locations across Nepal. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Nepal by location

Solar output per kW of installed solar PV by season in Madanpokhara

Seasonal solar PV output for Latitude: 27.8147, Longitude: 83.546 (Madanpokhara, Nepal), 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 26° South in Madanpokhara, Nepal

To maximize your solar PV system's energy output in Madanpokhara, Nepal (Lat/Long 27.8147, 83.546) throughout the year, you should tilt your panels at an angle of 26° 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 Madanpokhara, Nepal

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 Madanpokhara, Nepal. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
12° South in Summer	34° South in Autumn	43° South in Winter	22° 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 Madanpokhara, Nepal

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 Madanpokhara, Nepal.

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 Madanpokhara, Nepal

The area around Madanpokhara, Nepal, is characterized by diverse and rugged terrain typical of the Himalayan foothills. This region, known as the Siwalik Hills or Churia Range, features a mix of rolling hills, steep ridges, and narrow valleys. The elevation in this area generally ranges from about 700 to 1,500 meters above sea level, creating a varied landscape.

The topography is largely shaped by the young and fragile geology of the Siwalik Hills, which are prone to erosion. As a result, you'll find numerous small streams and rivulets cutting through the terrain, creating a network of drainage systems. The hillsides are often covered with subtropical and temperate forests, while the valley floors may contain agricultural land where the slopes are gentler.

To the north of Madanpokhara, the terrain becomes increasingly mountainous as it transitions into the Middle Hills region of Nepal. To the south, the land gradually descends towards the flat Terai plains, which extend to the Indian border.

Suitable Areas for Large-Scale Solar PV

When considering locations for large-scale solar photovoltaic (PV) installations near Madanpokhara, several factors come into play. The most suitable areas would likely be:

1. South-facing hillsides: Gentle to moderate slopes facing south would receive the most sunlight throughout the year. These areas would be ideal for solar panels, as long as they are stable and not prone to landslides.

2. Valley floors: Wider, flat areas in the valleys could provide ample space for solar arrays. However, care must be taken to avoid prime agricultural land and to ensure these locations are not prone to flooding.

3. Elevated plateaus: If any relatively flat, elevated areas exist in the region, these could be excellent for solar installations. They would likely have good sun exposure and be away from shading caused by surrounding hills.

4. Degraded or barren land: Areas that are not suitable for agriculture or have been degraded by erosion could be repurposed for solar energy production, providing an environmental and economic benefit.

It's important to note that while the hilly terrain presents challenges for large-scale solar installations, it also offers opportunities for distributed, smaller-scale projects that could take advantage of the varied topography. Any large-scale project would require careful site selection, environmental impact assessments, and consideration of local community needs and land use patterns.

Nepal solar PV Stats as a country

Nepal ranks 89th in the world for cumulative solar PV capacity, with 93 total MW's of solar PV installed. This means that 0.10% of Nepal's total energy as a country comes from solar PV (that's 43rd in the world). Each year Nepal is generating 3 Watts from solar PV per capita (Nepal ranks 86th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Nepal?

Yes, there are incentives for businesses wanting to install solar energy in Nepal. The Government of Nepal 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 established 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 Nepal? 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.

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.