Taipei City, Taiwan, situated at a latitude of 25.0759 and a longitude of 121.5516, is an advantageous location for the generation of solar power due to its significant exposure to sunlight throughout the year. The city's position within the Northern Sub Tropics allows it to enjoy extended daylight hours during summer months which results in higher solar energy production.
In terms of average kilowatt-hour (kWh) produced per day for each kilowatt (kW) of installed solar capacity, summer tops the list with 6.20 kWh/day per kW, followed by spring with an output of 4.50 kWh/day per kW. Autumn sees slightly less production at 4.26 kWh/day per kW while winter records the lowest output at 2.87 kWh/day per kW.
To optimize solar energy generation in this location, fixed-panel installations should be tilted at an angle of twenty-one degrees facing southward.
Despite these promising figures, certain environmental factors could potentially hinder optimal solar power production in Taipei City. The city is known to experience heavy rainfall and cloudy conditions during monsoon seasons which can significantly reduce power outputs from photovoltaic systems due to decreased sunlight penetration.
To mitigate these weather-related challenges and ensure greater energy production from their installations regardless of seasonality or weather patterns, potential investors or homeowners considering installing solar panels should consider measures such as regular maintenance and cleaning procedures that keep panels free from dust or rain residue that can block sunlight absorption.
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 36 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 Taipei City
Seasonal solar PV output for Latitude: 25.0759, Longitude: 121.5516 (Taipei City, 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 21° South in Taipei City, Taiwan
To maximize your solar PV system's energy output in Taipei City, Taiwan (Lat/Long 25.0759, 121.5516) throughout the year, you should tilt your panels at an angle of 21° 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 Taipei City, 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 Taipei City, Taiwan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 21° 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 |
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 Taipei City, 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 Taipei City, Taiwan.
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 Taipei City, Taiwan
The topography around Taipei City, Taiwan is generally quite hilly. The area is surrounded by mountains and hills, with the flat plains of the city located in between. Areas to the east of the city are more suited for large scale solar PV installations due to their higher elevations and greater exposure to sunlight during daylight hours. In particular, areas such as Shilin District and Neihu District would be ideal for larger solar PV installations due to their higher elevation and direct access to sunlight throughout most of the day.
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
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 20th of August 2023
Last Updated: Wednesday 26th of June 2024
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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.