Lalbandi, Nepal, situated in the Northern Sub Tropics at coordinates 27.0588, 85.6404, presents a favorable location for solar PV energy generation throughout the year. The area experiences consistent solar radiation across seasons, with some variations that can impact energy production.

Seasonal Solar Energy Production

Solar energy output in Lalbandi shows promising results across all seasons. Spring stands out as the most productive period, with an impressive 6.06 kWh/day per kW of installed solar capacity. Summer and autumn offer similar outputs at 4.62 kWh/day and 4.63 kWh/day, respectively. Winter sees a slight dip but still maintains a respectable 4.33 kWh/day.

The consistency in output throughout the year makes Lalbandi an ideal location for solar PV installations. The peak production during spring can be attributed to clear skies and optimal sun angles, while the slightly lower output in winter is likely due to shorter days and potential atmospheric conditions.

Optimal Panel Installation

To maximize year-round solar energy production in Lalbandi, fixed solar panels should be tilted at a 26-degree angle facing south. This optimal angle takes into account the location's latitude and the sun's path throughout the year, ensuring the panels capture the most sunlight possible across all seasons.

Environmental Considerations

While Lalbandi offers favorable conditions for solar energy production, there are some environmental factors to consider:

• Monsoon season: Heavy rainfall and increased cloud cover during the summer monsoon (June to September) may temporarily reduce solar output.
• Dust accumulation: The region's dry periods can lead to dust buildup on solar panels, potentially decreasing efficiency.

To mitigate these issues, regular panel cleaning and maintenance should be incorporated into the solar installation plan. Additionally, considering a slight increase in the tilt angle during the monsoon season can help with natural cleaning from rainwater and optimize production during periods of diffused sunlight.

Overall, Lalbandi's location proves to be highly suitable for solar PV energy generation, with consistent output throughout the year and exceptional performance during spring. With proper installation and maintenance, solar energy systems in this area can provide a reliable and sustainable source of electricity.

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 Lalbandi

Seasonal solar PV output for Latitude: 27.0588, Longitude: 85.6404 (Lalbandi, 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 Lalbandi, Nepal

To maximize your solar PV system's energy output in Lalbandi, Nepal (Lat/Long 27.0588, 85.6404) 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 Lalbandi, 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 Lalbandi, 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
11° South in Summer	33° South in Autumn	42° South in Winter	21° 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 Lalbandi, 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 Lalbandi, 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 Lalbandi, Nepal

The topography around Lalbandi, Nepal, is characterized by a diverse landscape that reflects the transition from the flat Terai region to the foothills of the Himalayas. Lalbandi itself is situated in the southern part of Nepal, in the Sarlahi District, which is part of the broader Terai region. This area is known for its relatively flat terrain, with gentle slopes and occasional small hills. To the south of Lalbandi, the landscape is predominantly flat, featuring expansive agricultural fields and scattered settlements. This flat terrain extends for many kilometers, gradually merging with the Indo-Gangetic Plain. The soil in this region is generally fertile, supporting various crops and vegetation. As one moves northward from Lalbandi, the terrain begins to show more variation. The land starts to undulate, with low hills and shallow valleys becoming more frequent. These features are the first indications of the approaching Siwalik Hills, also known as the Churia Range. These hills mark the beginning of the ascent towards the Himalayas and create a more diverse topographical profile. Several rivers and streams flow through the region, including the Bagmati River to the west and smaller waterways that originate in the hills to the north. These water bodies have shaped the local landscape over time, creating alluvial plains and occasionally cutting through the terrain to form small gorges or valleys.

Suitability for Large-Scale Solar PV

When considering areas nearby Lalbandi for large-scale solar photovoltaic (PV) installations, several factors come into play. The most suitable locations would likely be found in the flatter regions to the south and southeast of Lalbandi. These areas offer several advantages for solar PV development: Firstly, the flat terrain provides ample space for the installation of large solar arrays without the need for significant land modification. This reduces construction costs and environmental impact. The open nature of the landscape also minimizes shading from natural features, allowing for optimal sun exposure throughout the day. Secondly, the agricultural land in this region, while productive, may include some less fertile or fallow areas that could be repurposed for solar energy production. This would allow for the development of solar farms without significantly impacting food production. The proximity to existing infrastructure, including roads and power transmission lines, is another factor that makes the areas south of Lalbandi attractive for solar PV development. This infrastructure would facilitate the construction process and the integration of generated electricity into the grid. However, it's important to note that while the flat areas are generally more suitable, some of the gently sloping lands to the north might also be considered. South-facing slopes, in particular, could provide excellent exposure for solar panels, potentially increasing their efficiency. Any large-scale solar PV project in this region would need to carefully balance energy production goals with environmental conservation and agricultural needs. Proper planning and community engagement would be essential to ensure the sustainable development of solar resources in the area around Lalbandi.

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.