Banjar Mandung, Bali, Indonesia presents an excellent location for year-round solar energy generation, with consistently strong solar output throughout all seasons. This tropical location benefits from reliable sunlight patterns that make it highly suitable for solar photovoltaic installations.

Solar Energy Production Performance

The solar energy output at this location shows impressive consistency across all seasons. Spring delivers the highest energy production at 6.29kWh per day per kW of installed solar capacity, followed closely by autumn at 6.12kWh per day. Winter maintains strong performance at 5.83kWh per day, while summer produces 5.48kWh per day per kW installed. The optimal times for solar generation at Banjar Mandung are spring and autumn, when atmospheric conditions and sun angles combine to deliver peak performance. However, the relatively small variation between seasons means that solar installations will provide reliable energy production year-round, making this location ideal for consistent solar power generation.

Optimal Panel Installation

For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 9 degrees facing north. This angle has been calculated to optimize total annual solar output by accounting for the sun's path throughout the year, Earth's elliptical orbit, and the specific latitude of this location.

Environmental and Weather Challenges

Several local factors could potentially impact solar energy production at this tropical location:

• High humidity levels typical of tropical climates can reduce panel efficiency and create condensation issues
• Frequent rainfall during wet seasons may temporarily reduce solar output and create cleaning challenges
• Salt air from coastal proximity can cause corrosion of metal components and panel frames
• Dust and debris accumulation during dry periods can significantly reduce panel efficiency
• Tropical storms and high winds pose risks to panel mounting systems

Preventative Measures for Optimal Performance

To maximize solar energy production despite these challenges, several installation strategies should be implemented:

• Install panels with adequate ventilation spacing to reduce heat buildup and improve efficiency in high humidity
• Use corrosion-resistant aluminum frames and stainless steel mounting hardware to withstand salt air exposure
• Implement regular cleaning schedules, particularly after dust storms or extended dry periods
• Design robust mounting systems engineered for high wind loads typical of tropical storm conditions
• Install drainage systems to prevent water pooling around panel installations
• Choose panels with anti-reflective coatings that perform well in high-humidity environments

Despite these environmental considerations, Banjar Mandung remains an excellent location for solar energy generation. The consistent high solar output throughout the year far outweighs the manageable challenges posed by the tropical climate, making it a highly viable location for solar installations with proper planning and maintenance.

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

Link: Solar PV potential in Indonesia by location

Solar output per kW of installed solar PV by season in Banjar Mandung

Seasonal solar PV output for Latitude: -8.5422, Longitude: 115.1352 (Banjar Mandung, Indonesia), 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 9° North in Banjar Mandung, Indonesia

To maximize your solar PV system's energy output in Banjar Mandung, Indonesia (Lat/Long -8.5422, 115.1352) throughout the year, you should tilt your panels at an angle of 9° North 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 Banjar Mandung, Indonesia

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 Banjar Mandung, Indonesia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 9° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
7° South in Summer	15° North in Autumn	24° North in Winter	3° North 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 Banjar Mandung, Indonesia

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 Banjar Mandung, Indonesia.

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 Banjar Mandung, Indonesia

Topographical Features of Banjar Mandung

Banjar Mandung sits within the gently undulating landscape of central Bali, positioned in the Tabanan Regency at an elevation of approximately 200 meters above sea level. The terrain around this area is characterized by gradually sloping hills and relatively flat agricultural plains that extend toward the coast. The topography reflects the typical characteristics of Bali's central region, where volcanic activity has created fertile, well-drained soils across moderately elevated terrain. The surrounding landscape consists primarily of rice terraces, mixed agricultural land, and scattered rural settlements. The terrain slopes gradually downward from the volcanic highlands in the north toward the coastal plains in the south. This gentle gradient creates natural drainage patterns while maintaining relatively stable ground conditions throughout most of the area.

Geological and Environmental Context

The region benefits from Bali's volcanic geology, which has produced stable foundation conditions across much of the terrain. The soil composition consists largely of volcanic deposits that have weathered into clay and sandy loam mixtures, providing good drainage characteristics while maintaining structural integrity. Seasonal rainfall patterns influence the landscape, with the wet season bringing increased water flow through natural drainage channels and temporary flooding in lower-lying areas. The climate remains consistently tropical throughout the year, with moderate humidity levels and relatively stable temperatures. The area experiences distinct wet and dry seasons, with the dry season typically providing more consistent atmospheric conditions favorable for solar energy generation.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations would be the flatter agricultural areas and gentle hillsides that offer several key advantages. The elevated plains south and east of Banjar Mandung present ideal conditions, as these areas combine relatively flat terrain with good drainage and minimal shading from surrounding features. Areas with southern-facing slopes would be particularly advantageous, as they receive optimal sun exposure throughout the day while maintaining the gentle gradients necessary for efficient panel installation and maintenance access. The terrain in these locations typically requires minimal grading or earthwork, reducing installation costs and environmental impact. The agricultural plains extending toward the coast offer extensive flat areas that could accommodate large solar arrays. These locations benefit from consistent wind patterns that help cool solar panels and improve their efficiency. The stable geological conditions in these areas also minimize concerns about ground settlement or structural instability over time.

Infrastructure and Access Considerations

The road network around Banjar Mandung provides reasonable access to potential solar development sites, though some areas may require infrastructure improvements to support heavy construction equipment and ongoing maintenance operations. The relatively gentle topography facilitates road construction and utility line installation where needed. Areas closer to existing electrical infrastructure would be most practical for immediate development, as they minimize the costs and complexity associated with grid connection. The terrain generally supports the construction of access roads and maintenance facilities without requiring extensive engineering solutions for steep grades or unstable ground conditions.

Indonesia solar PV Stats as a country

Indonesia ranks 71st in the world for cumulative solar PV capacity, with 211 total MW's of solar PV installed. Each year Indonesia is generating 1 Watts from solar PV per capita (Indonesia ranks 88th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Indonesia?

Yes, there are several incentives for businesses wanting to install solar energy in Indonesia. The Indonesian government has implemented a number of policies and programs to encourage the adoption of renewable energy sources such as solar power. These include tax exemptions, subsidies, feed-in tariffs, and other financial incentives. Additionally, the government has established a Renewable Energy Fund which provides grants for research and development projects related to renewable energy technologies.

Do you have more up to date information than this on incentives towards solar PV projects in Indonesia? Please reach out to us and help us keep this information current. Thanks!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.