Solar PV Analysis of Denpasar, Indonesia
Denpasar, Bali, Indonesia is a pretty good location for solar energy production all year round. This is because it's in the tropics where sunlight is consistent throughout most of the year. The amount of electricity that can be generated from each kilowatt (kW) of installed solar panels varies slightly by season, but not by much: 5.46 kilowatt-hours (kWh) per day in summer, 6.11 kWh/day in autumn, 5.86 kWh/day in winter and 6.25 kWh/day in spring.
In simpler terms, this means that if you have a solar panel system with a power capacity of one kW installed at Denpasar, Bali, you can expect to generate around five to six units (kWh) of electricity per day on average - that's quite decent!
In terms of when it's best to generate solar energy at this location, spring and autumn are slightly better than summer and winter due to higher daily output rates.
Also important is how your panels are set up: for a fixed installation at this location, tilting your panels at an angle of nine degrees towards the North will help maximize your total yearly power production from the system.
Now let’s look into any local factors that could affect your solar production here:
Being located near the equator means Denpasar has a tropical climate characterized by high humidity and rainfall especially during wet seasons which may reduce sunlight exposure intermittently but not significantly enough as sunshine still prevails most days.
There might also be potential shading issues depending on specific site topography or surrounding buildings or trees which could block direct sunlight onto your panels reducing their efficiency.
To address these potential issues:
1) Regular cleaning and maintenance would ensure any dirt or debris caused by high humidity or rainfall won't stay long enough on your panels to impact their performance.
2) Proper site assessment prior installation will help identify any shading issues so they can be mitigated by either choosing a better location or trimming any obstructing foliage.
Overall, with the right setup and maintenance, Denpasar, Bali, Indonesia can be a great place for solar energy production.
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 Denpasar
Seasonal solar PV output for Latitude: -8.6507, Longitude: 115.2124 (Denpasar, 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 Denpasar, Indonesia
To maximize your solar PV system's energy output in Denpasar, Indonesia (Lat/Long -8.6507, 115.2124) 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 Denpasar, 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 Denpasar, 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 Denpasar, 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 Denpasar, 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 Denpasar, Indonesia
Denpasar, the capital city of Bali, Indonesia, is located on a flat plain with an average altitude of about 4 meters above sea level. The city is surrounded by areas of slightly higher elevation such as Badung Regency to the south and Gianyar Regency to the east. The region experiences a tropical climate with high humidity levels and significant rainfall particularly during monsoon season from November to March.
In terms of solar PV potential, areas with flat or gently sloping terrain and high sun exposure would be most suitable. Given Denpasar's urban development, large-scale solar farms may not be feasible within the city limits due to space constraints. However, less densely populated regions in nearby regencies might offer more potential.
The area north-west of Denpasar towards Tabanan could be suitable for large-scale solar PV installations due to its relatively flat terrain and lower population density compared to southern parts of Bali. Additionally, parts of Karangasem Regency in eastern Bali also have similar characteristics.
However, it's important to note that factors such as local weather patterns (including cloud cover), land use restrictions, proximity to power grids or demand centers should also be considered when determining suitability for solar power projects. Furthermore, the feasibility would need a detailed site-specific investigation including technical studies like Solar Resource Assessment (SRA) before making any decision.
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 15th of March 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.
