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Graph of hourly avg kWh electricity output per kW of Solar PV installed in Sanchong District, Taiwan (by season)

Solar Energy Potential in Sanchong District, New Taipei City, Taiwan

Sanchong District in Taiwan, situated at 25.0705° N, 121.4904° E in the Northern Sub-Tropics, offers a reasonably good location for solar PV energy generation, though with notable seasonal variations. This northern Taiwanese urban area experiences its peak solar production during summer months, with significant reductions during winter. The seasonal solar energy production shows a clear pattern. Summer stands out as the most productive season with panels generating approximately 6.23 kWh per day for each kilowatt of installed capacity. Spring and autumn provide moderate production at 4.50 kWh/day and 4.22 kWh/day respectively. Winter shows the lowest output at just 2.81 kWh/day per installed kilowatt.

Optimal Panel Installation

For fixed solar panel installations in Sanchong District, New Taipei City, the ideal tilt angle for maximizing year-round energy production is 20 degrees facing South. This carefully calculated angle optimizes solar capture across all seasons, balancing the higher summer sun position with the lower winter sun trajectory.

Environmental and Weather Considerations

Several environmental factors can impact solar production in Sanchong District. Taiwan's subtropical climate introduces specific challenges for solar installations:
  • Typhoons and heavy monsoon rains, particularly from June to October, can temporarily reduce solar output and potentially damage improperly secured installations.
  • High humidity levels and air pollution from nearby industrial areas may cause dust and particulate buildup on panels, reducing efficiency.
  • The urban setting of Sanchong District may create partial shading issues from surrounding buildings.
To mitigate these challenges, solar installations should include robust mounting systems designed to withstand typhoon-force winds. Regular cleaning maintenance should be scheduled, particularly after heavy rain or pollution events. Additionally, micro-inverters or power optimizers can help minimize production losses from partial shading in this urban environment. The best months for solar production are May through August, when clear skies and strong sunlight create ideal conditions. December and January represent the challenging period, with shorter days and frequent cloud cover significantly reducing output.

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

Link: Solar PV potential in Taiwan by location

Solar output per kW of installed solar PV by season in Sanchong District

Seasonal solar PV output for Latitude: 25.0705, Longitude: 121.4904 (Sanchong District, Taiwan), 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:

Summer
Average 6.23kWh/day in Summer.
Autumn
Average 4.22kWh/day in Autumn.
Winter
Average 2.81kWh/day in Winter.
Spring
Average 4.50kWh/day in Spring.

 

Ideally tilt fixed solar panels 20° South in Sanchong District, Taiwan

To maximize your solar PV system's energy output in Sanchong District, Taiwan (Lat/Long 25.0705, 121.4904) throughout the year, you should tilt your panels at an angle of 20° 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.

The sun
At Latitude: 25.0705, Longitude: 121.4904, the ideal angle to tilt panels is 20° South

Seasonally adjusted solar panel tilt angles for Sanchong District, Taiwan

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 Sanchong District, Taiwan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 20° South tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
9° South in Summer 28° South in Autumn 39° South in Winter 17° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Sanchong District, Taiwan as follows: In Summer, set the angle of your panels to 9° facing South. In Autumn, tilt panels to 28° facing South for maximum generation. During Winter, adjust your solar panels to a 39° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 17° angle facing South to capture the most solar energy in Sanchong District, Taiwan.

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 Sanchong District, Taiwan

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 Sanchong District, Taiwan.

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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Sanchong District, Taiwan

Sanchong District, situated in New Taipei City, Taiwan, presents a distinctive topographical profile that influences its potential for solar energy development. The district lies primarily on a flat plain adjacent to the Tamsui River, with elevations generally below 50 meters above sea level across most of its urbanized area. This relatively level terrain characterizes much of the district, especially in its eastern and central portions where dense urban development has occurred. The western edge of Sanchong borders the Tamsui River, creating a natural boundary with gentle slopes leading down to the riverbanks. Moving eastward from the river, the land remains predominantly flat, supporting the district's dense residential and commercial infrastructure. This urban landscape consists mainly of mid-rise and high-rise buildings, with limited open spaces.

Surrounding Topography

The broader regional topography surrounding Sanchong offers more variation. To the south lies Taipei City, similarly situated on the Taipei Basin—a relatively flat alluvial plain surrounded by mountains. To the north and northeast, the terrain gradually transitions to the foothills of the Tatun Volcano Group, where elevations begin to increase significantly. The eastern horizon is dominated by the Xindian Mountain Range, while the western view extends toward the Taiwan Strait. This geographical context places Sanchong in a basin-like setting, with mountains visible in the distance but not immediately affecting the district's own topography. The area experiences a subtropical monsoon climate, with significant precipitation throughout the year, particularly during the summer months when typhoons may affect the region.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic (PV) installations, several nearby areas present more favorable conditions than Sanchong itself, which is constrained by its dense urban development and limited open space. The Tamsui District to the north, where the terrain opens up with less dense development, offers potential sites for solar installations. Particularly promising are the coastal areas near the mouth of the Tamsui River, where flatter terrain and fewer tall buildings create fewer shading issues. The Bali District, located across the Tamsui River to the west of Sanchong, features more open spaces and gentler slopes that could accommodate larger solar arrays. The slightly elevated areas here receive good solar exposure throughout the day. Further inland, the Linkou Plateau presents perhaps the most promising location for large-scale solar development in the vicinity. This elevated tableland, situated to the southwest of Sanchong, stands approximately 250 meters above sea level and features relatively flat terrain with significantly less urban density. The plateau's elevation helps it avoid some of the atmospheric pollution that can affect solar efficiency in lower-lying urban areas. The Taoyuan Plain, extending to the southwest, also offers extensive flat areas that would be suitable for large solar installations. This region's agricultural character means there are larger contiguous parcels of land potentially available for development. For utility-scale solar projects, these peripheral areas would be substantially more suitable than Sanchong District itself, which would be better suited to distributed rooftop solar installations given its urban character and limited ground-level space. The optimal locations combine flat or gently sloping terrain, minimal shading from natural features or structures, and sufficient land area to achieve economies of scale in installation and operation.

Taiwan solar PV Stats as a country

Taiwan ranks 17th in the world for cumulative solar PV capacity, with 7,700 total MW's of solar PV installed. Each year Taiwan is generating 327 Watts from solar PV per capita (Taiwan ranks 12th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Taiwan?

Yes, there are incentives for businesses wanting to install solar energy in Taiwan. The Taiwanese government offers a number of financial incentives and subsidies for businesses that install solar energy systems. These include tax credits, grants, low-interest loans, and feed-in tariffs. Additionally, the government has implemented a Renewable Energy Certificate (REC) system which allows businesses to trade renewable energy certificates with other companies or organizations in order to receive additional financial benefits.

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

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Sanchong District, Taiwan
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Wednesday 28th of May 2025
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.

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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.

Calculate Your Optimal Solar Panel Tilt Angle