Solar PV Analysis of Pekanbaru, Indonesia
Pekanbaru, Riau, Indonesia is a good location for generating solar energy throughout the year. This is due to its tropical climate where sunlight is consistent most of the time and seasons are more defined by wet and dry periods rather than temperature changes.
The amount of electricity that can be produced from each kilowatt (kW) of installed solar panels varies slightly with each season. In summer, you could expect around 5.37 kilowatt-hours (kWh) per day, in autumn about 5.62 kWh/day, in winter approximately 4.89 kWh/day, and in spring roughly 5.36 kWh/day.
These figures suggest that autumn might be the best time for solar energy production at this location as it has the highest daily output rate per kW of installed solar panels.
For fixed panel installations at this location, tilting the panels at an angle of zero degrees would maximize total yearly production from your solar photovoltaic system.
However, there could be some local factors that may impede solar production at Pekanbaru such as rain during monsoon season or dust accumulation on panels which may block sunlight penetration.
To overcome these challenges:
1) You should ensure regular cleaning and maintenance of your solar panels to remove any dust or debris.
2) Consider installing a protective cover over your system during heavy rainfall.
3) If possible install tracking systems so that your panels can move according to sun's position maximizing exposure even on cloudy days.
Therefore despite minor seasonal variations and potential environmental challenges like heavy rainfall or dust accumulation; Pekanbaru's consistent sunlight makes it an ideal location for year-round generation of energy through Solar PV systems provided necessary precautions are taken into account while installation & maintenance processes.
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 Pekanbaru
Seasonal solar PV output for Latitude: 0.5395, Longitude: 101.4457 (Pekanbaru, 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 0° in Pekanbaru, Indonesia
To maximize your solar PV system's energy output in Pekanbaru, Indonesia (Lat/Long 0.5395, 101.4457) throughout the year, you should tilt your panels at an angle of 0° 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 Pekanbaru, 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 Pekanbaru, Indonesia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 0° tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 15° North in Summer | 7° South in Autumn | 16° South in Winter | 6° 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 Pekanbaru, 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 Pekanbaru, Indonesia.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Pekanbaru, Indonesia
Pekanbaru is located in the eastern region of central Sumatra and it's characterized by a relatively flat topography. The city sits on the banks of the Siak River and is surrounded by vast areas of peatland, wetlands, and tropical rainforest.
Given its equatorial location, Pekanbaru receives abundant sunlight throughout the year which makes it suitable for large-scale solar PV installations. However, considering its topography and land use characteristics, specific areas that could be best suited for such projects might include:
1. Cleared or degraded lands: These are lands that have been previously cleared for agriculture or other uses but are currently not in active use. They provide a flat surface ideal for setting up solar panels without requiring further deforestation.
2. Rooftops: Large scale rooftop installations on commercial or industrial buildings can also be an excellent option to utilize already developed spaces.
3. Floating Solar Panels: Given Pekanbaru's proximity to water bodies like rivers and wetlands, floating solar systems could also be considered as they do not require any land space.
It’s important to note though that while these locations might seem suitable from a geographical perspective, feasibility would still depend on several other factors including local regulations, social acceptance/impacts (especially if you're thinking about using agricultural land), grid infrastructure capacity etc.
For more precise assessment professional site analysis including detailed geospatial data would be required.
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
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 14th of June 2024
Last Updated: Monday 21st of July 2025
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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.
