Solar PV Analysis of Franschhoek, South Africa
Franschhoek, Western Cape, South Africa, is a pretty good place for generating solar energy throughout the year. The amount of energy you can get from a solar panel depends on the season. In summer, each kilowatt of installed solar power can generate around 8.97 kilowatt-hours per day. In autumn and winter, this drops to around 4.99 and 3.53 kilowatt-hours respectively due to shorter days and less intense sunlight. However, it picks back up in spring with about 7.09 kilowatt-hours generated per day.
The best times of year for generating solar power at this location are during the summer and spring months when there's more sunlight available throughout the day.
For maximum efficiency in Franschhoek, Western Cape, fixed panel installations should be tilted at an angle of 29 degrees towards the north - this position allows panels to capture as much sunlight as possible over the course of a year.
As for local factors that could affect solar production in Franschhoek; like any other location, things like shading from buildings or trees could reduce how much sun reaches your panels - so it's important to choose an installation site that's free from such obstructions as much as possible.
Weather conditions such as heavy cloud cover or dust storms could also temporarily decrease your system's output by blocking out some sunlight - regular cleaning and maintenance will help ensure your panels operate efficiently despite these challenges.
Lastly, considering that Franschhoek is located in a mountainous region known for its wine farms; if planning on installing on hilly terrain or vineyards one needs to take into account potential shadowing from hills/mountains/vines especially during winter months when sun path is lower – choosing site locations carefully with these considerations will be beneficial in maximizing yearly yield.
Note: The Southern Sub Tropics extend from -23.5° latitude South down to -35° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 196 locations across South Africa. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in South Africa by location
Solar output per kW of installed solar PV by season in Franschhoek
Seasonal solar PV output for Latitude: -33.9146, Longitude: 19.1123 (Franschhoek, South Africa), 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 29° North in Franschhoek, South Africa
To maximize your solar PV system's energy output in Franschhoek, South Africa (Lat/Long -33.9146, 19.1123) throughout the year, you should tilt your panels at an angle of 29° 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 Franschhoek, South Africa
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 Franschhoek, South Africa. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 29° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 18° North in Summer | 39° North in Autumn | 49° North in Winter | 27° 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 Franschhoek, South Africa
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 Franschhoek, South Africa.
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 Franschhoek, South Africa
Franschhoek is located in the Western Cape Province of South Africa. The area is surrounded by the Franschhoek Mountains to the north and east, and Drakenstein Mountains to the south. It's situated in a valley, which makes it less ideal for large-scale solar PV installations due to potential shading issues.
However, there are other areas nearby that could be more suitable for large-scale solar PV. These include flat and open spaces with high levels of sunlight exposure such as:
1. The Karoo region: This semi-desert region stretches across much of Western Cape province and is known for its abundant sunshine throughout the year.
2. Coastal plains: Areas along the coast west or east of Franschhoek are generally flat with good sun exposure.
3. Farmlands: Large agricultural areas around Worcester, Robertson or Ceres could potentially accommodate large-scale solar installations given their relatively flat terrain and good sun exposure.
4. Rooftops in urban areas: While not suitable for large-scale farms, rooftops in larger cities like Cape Town could be used for smaller scale distributed generation from solar PV.
It's important to note that any potential site would need a detailed assessment considering factors like land use restrictions, proximity to power grid connections, environmental impacts among others before deciding if it's suitable for a solar farm.
South Africa solar PV Stats as a country
South Africa ranks 21st in the world for cumulative solar PV capacity, with 6,221 total MW's of solar PV installed. This means that 2.00% of South Africa's total energy as a country comes from solar PV (that's 34th in the world). Each year South Africa is generating 105 Watts from solar PV per capita (South Africa ranks 38th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in South Africa?
Yes, there are several incentives for businesses wanting to install solar energy in South Africa. The government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy projects. These include the Renewable Energy Feed-in Tariff (REFIT) program, which provides long-term contracts with guaranteed prices for electricity generated from renewable sources; the Accelerated Depreciation Allowance (ADA), which allows businesses to deduct up to 50% of their capital expenditure on renewable energy projects from their taxable income; and the Small Scale Embedded Generation (SSEG) program, which provides financial support for small-scale solar installations. Additionally, some local governments offer grants or subsidies to help offset the cost of installing solar systems.
Do you have more up to date information than this on incentives towards solar PV projects in South Africa? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 30th of December 2023
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.
