Daxi, Taoyuan, Taiwan represents a reasonably good location for year-round solar energy generation, though with notable seasonal variations typical of its Northern Subtropical climate zone at coordinates 24.8829°N, 121.2827°E.

Seasonal Solar Performance

The solar energy output at Daxi shows clear seasonal patterns that reflect the area's subtropical weather conditions. Summer delivers the highest production at 5.73 kWh per day per kW of installed solar capacity, making it the peak generation season. Spring follows as the second-best performing season with 4.86 kWh per day per kW, offering strong solar potential as weather conditions become more favorable. Autumn production drops to 4.18 kWh per day per kW, while winter shows the lowest output at 3.48 kWh per day per kW. Despite winter being the weakest season, the location still maintains reasonable solar generation year-round, which is advantageous for consistent energy production.

Optimal Panel Configuration

For fixed panel installations at Daxi, Taoyuan, the ideal tilt angle is 22 degrees facing south to maximize total year-round solar production. This angle is calculated by analyzing daily solar elevation angles at this latitude, determining optimal panel positioning, and weighting these calculations using solar irradiance data while accounting for Earth's elliptical orbit patterns.

Environmental and Weather Challenges

Several significant local factors can impede solar production at this Taiwan location and require careful consideration during installation planning. The subtropical climate brings high humidity levels throughout much of the year, which can reduce solar panel efficiency and create condensation issues. Additionally, Taiwan's location makes it susceptible to typhoons during the summer and early autumn months, which can damage solar installations and create extended periods of heavy cloud cover that dramatically reduce energy generation. The region also experiences a distinct wet season with frequent rainfall and overcast conditions, particularly affecting spring and early summer production. Air pollution from nearby urban and industrial areas can create a film on solar panels that reduces their efficiency over time.

Preventative Installation Measures

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

• Install robust mounting systems designed to withstand typhoon-force winds, including reinforced anchoring and aerodynamic panel positioning
• Use anti-reflective coatings and hydrophobic treatments on panels to minimize the impact of humidity and rain
• Implement regular cleaning schedules to remove pollution buildup and debris
• Consider micro-inverters or power optimizers to minimize the impact when individual panels are shaded by clouds or debris
• Install proper drainage systems around ground-mounted installations to prevent water accumulation during heavy rains

Despite these environmental challenges, Daxi's consistent year-round solar generation potential makes it a viable location for solar energy projects when proper installation techniques and maintenance practices are employed.

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 Daxi

Seasonal solar PV output for Latitude: 24.8829, Longitude: 121.2827 (Daxi, 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:

 

Ideally tilt fixed solar panels 22° South in Daxi, Taiwan

To maximize your solar PV system's energy output in Daxi, Taiwan (Lat/Long 24.8829, 121.2827) throughout the year, you should tilt your panels at an angle of 22° 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.

Seasonally adjusted solar panel tilt angles for Daxi, 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 Daxi, Taiwan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 22° 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	29° South in Autumn	40° South in Winter	18° 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 Daxi, 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 Daxi, 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.

Topography for solar PV around Daxi, Taiwan

Topographic Features of the Daxi Region

Daxi sits in the northern part of Taiwan within Taoyuan City, positioned in a transitional zone between the coastal plains to the west and the foothills of Taiwan's Central Mountain Range to the east. The terrain around Daxi is characterized by gently rolling hills and low-lying valleys, with elevations typically ranging from 200 to 400 meters above sea level. This hilly topography creates a landscape of undulating ridges and shallow depressions that drain toward the Dahan River system.

The area exhibits the classic features of Taiwan's western piedmont region, where ancient river terraces have carved distinctive stepped landforms over geological time. These terraces create relatively flat platforms at different elevations, interspersed with steeper slopes that connect the various levels. The soil composition consists primarily of lateritic red earth and alluvial deposits, typical of subtropical weathering processes in this region.

Moving westward from Daxi toward the Taiwan Strait, the terrain gradually flattens into the broad Taoyuan Plateau and eventually the coastal plains. To the east and southeast, the landscape becomes increasingly mountainous as it approaches the foothills of the Xueshan Range, with peaks rising dramatically beyond the immediate vicinity.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations would be found on the flatter terraced areas and gentle slopes with southern exposure throughout the Daxi vicinity. The ancient river terraces provide particularly attractive sites, as they offer relatively level ground while maintaining good drainage characteristics essential for large-scale infrastructure development.

Areas to the west and southwest of Daxi present the most promising opportunities, where the topography transitions toward the Taoyuan Plateau. These locations combine several advantageous features: moderate slopes that facilitate construction and maintenance access, stable geological foundations, and terrain that naturally sheds water during Taiwan's intense monsoon seasons.

The elevated terraces at 250-350 meter elevations would be especially well-suited for solar farms, as they avoid the flood-prone lower valleys while remaining accessible for equipment installation and grid connection. These platforms often span several hectares of relatively uniform terrain, making them ideal for the systematic arrangement of solar panel arrays.

Sites with gentle south-facing slopes of 5-15 degrees would maximize solar exposure while minimizing the engineering challenges associated with steeper terrain. The rolling topography naturally creates numerous such orientations, particularly on the ridges that separate the various drainage basins in the region.

Areas closer to existing electrical infrastructure and transportation networks would obviously provide additional practical advantages for large-scale development. The relatively open terrain west of Daxi, where agriculture currently dominates the land use, offers the best combination of suitable topography and development accessibility for major solar installations.

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!

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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.