Timika, Central Papua, Indonesia presents a moderately good location for year-round solar energy generation, though it faces some typical tropical challenges that can impact performance.

Solar Energy Production Potential

The solar output data shows relatively consistent energy generation throughout the year, with production ranging from 4.65 kWh per day per kW of installed capacity in winter up to 5.60 kWh per day in summer. Summer provides the highest output, followed closely by autumn at 5.37 kWh/day and spring at 5.29 kWh/day. Winter shows the lowest production but still maintains reasonable levels for tropical standards. For optimal year-round performance, solar panels should be installed at a fixed tilt angle of 4 degrees facing north. This relatively shallow angle is typical for locations close to the equator and helps maximize total annual energy production.

Environmental and Weather Challenges

Several factors in Timika can significantly impede solar energy production and require careful consideration during installation: High Humidity and Moisture The tropical climate creates persistently high humidity levels that can cause corrosion of electrical components, degradation of panel materials, and reduced efficiency. Moisture can also lead to potential induced degradation (PID) in solar cells. Heavy Rainfall and Wet Seasons Extended periods of heavy rainfall can reduce solar irradiance and create challenges for system maintenance. While rain can help clean panels, excessive moisture can damage electrical connections and inverters if not properly protected. Dust and Particulate Matter Despite regular rainfall, dust accumulation between wet periods can reduce panel efficiency. Mining activities in the region may contribute additional particulate matter that settles on solar installations. Temperature Extremes High ambient temperatures common in tropical regions can reduce solar panel efficiency, as photovoltaic cells typically lose efficiency as temperatures rise above optimal operating conditions.

Preventative Measures for Better Performance

Several installation strategies can help mitigate these environmental challenges:

• Waterproof enclosures and sealing: Use IP65-rated or higher electrical enclosures for inverters and combiner boxes, with proper cable glands and weatherproof sealing
• Elevated mounting systems: Install panels with adequate ground clearance and ventilation to promote air circulation and reduce moisture buildup
• Anti-corrosion materials: Use stainless steel or aluminum mounting hardware with appropriate coatings to resist tropical corrosion
• Regular maintenance scheduling: Implement frequent cleaning and inspection routines, particularly after dust storms or extended dry periods
• Proper drainage design: Ensure mounting systems allow for effective water drainage and don't create standing water areas

Additional Considerations

The relatively flat panel angle of 4 degrees north helps with natural cleaning during rainfall but may require more frequent manual cleaning during dry periods. Installing panels with adequate spacing between rows can improve air circulation and help manage the heat buildup that reduces efficiency in tropical climates. Despite these challenges, Timika's consistent solar resource throughout the year makes it a viable location for solar energy projects when proper installation and maintenance practices are followed.

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 Timika

Seasonal solar PV output for Latitude: -4.6141, Longitude: 136.6768 (Timika, 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 4° North in Timika, Indonesia

To maximize your solar PV system's energy output in Timika, Indonesia (Lat/Long -4.6141, 136.6768) throughout the year, you should tilt your panels at an angle of 4° 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 Timika, 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 Timika, Indonesia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 4° North 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	10° North in Autumn	20° North in Winter	2° 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 Timika, 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 Timika, 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 Timika, Indonesia

Topography Around Timika

Timika sits in the lowland coastal region of Papua, Indonesia, positioned near the Arafura Sea on the southern coast of the island. The immediate area around the city is characterized by relatively flat terrain, with elevations typically ranging from sea level to approximately 100 meters above sea level. This coastal plain extends inland for considerable distances, creating a landscape dominated by wetlands, swamps, and low-lying agricultural areas.

The region features extensive alluvial plains formed by sediment deposits from numerous rivers that flow through the area toward the coast. These waterways create a network of channels and flood-prone zones that contribute to the area's marshy character. The terrain becomes increasingly undulating as one moves further inland from the coast, with gentle hills and ridges appearing at greater distances from Timika.

To the north and northeast of Timika, the topography gradually transitions from coastal plains to more elevated terrain, eventually reaching the foothills of Papua's central mountain ranges. However, within a reasonable distance of the city, the landscape remains predominantly flat to gently rolling, with occasional low hills breaking up the otherwise level terrain.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Timika would be the elevated, well-drained areas that lie inland from the immediate coastal zone. These slightly higher elevations, typically found 10 to 30 kilometers northeast and northwest of the city, offer several advantages for solar development. The terrain in these areas is generally stable, less prone to flooding, and provides better drainage compared to the lower coastal plains.

Areas with gentle slopes facing south or southeast would be particularly favorable, as they can provide optimal panel positioning while maintaining good drainage characteristics. The rolling hills found at moderate distances from the coast offer ideal conditions, as they are elevated enough to avoid the worst of the seasonal flooding that affects lower-lying areas, yet not so steep as to create challenging installation conditions or excessive grading requirements.

The zones immediately adjacent to existing infrastructure, such as the areas near the main roads leading inland from Timika, would also be advantageous for solar development. These locations provide easier access for construction and maintenance while still offering the topographical benefits of slightly elevated, well-drained terrain. The key is finding areas that balance accessibility with suitable ground conditions, avoiding both the flood-prone coastal lowlands and the more challenging terrain found at greater distances inland.

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.