Solar PV Analysis of East London, South Africa
East London, Eastern Cape, South Africa has a relatively good potential for solar energy production throughout the year due to its location in the Southern Sub Tropics. The amount of electricity that can be produced from solar power varies depending on the season. In summer, you can expect around 6.77 kilowatt-hours (kWh) per day for each kilowatt (kW) of installed solar panels. This output decreases slightly in autumn to about 4.31 kWh/day, drops further during winter to approximately 3.56 kWh/day and then increases again in spring to around 5.92 kWh/day.
So, if you're planning on installing solar panels here, you'll get the most energy out of them during summer and spring when sunlight is more abundant compared to autumn and winter.
To maximize your yearly solar energy production at this location, it's recommended that your fixed-panel installation should be tilted at an angle of 30 degrees facing North.
However, there might be some local factors that could potentially affect your solar power generation significantly such as weather conditions or environmental elements like dust or bird droppings on the panels which could reduce their efficiency by blocking sunlight.
In terms of weather conditions, East London experiences rainfall throughout the year with higher precipitation levels during summer which may temporarily reduce panel efficiency due to cloud cover or rain itself washing over them but these effects are generally short-lived and not overly detrimental overall.
Dust accumulation or bird droppings could also impede panel performance so regular cleaning would help maintain optimal operation – just make sure it's done carefully so as not damage them!
Therefore despite these minor challenges East London still remains a pretty suitable location for generating renewable energy through photovoltaic technology all year round!
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 East London
Seasonal solar PV output for Latitude: -33.0354, Longitude: 27.9159 (East London, 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 30° North in East London, South Africa
To maximize your solar PV system's energy output in East London, South Africa (Lat/Long -33.0354, 27.9159) throughout the year, you should tilt your panels at an angle of 30° 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 East London, 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 East London, South Africa. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° North tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 17° North in Summer | 38° North in Autumn | 48° North in Winter | 26° 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 East London, 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 East London, 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 East London, South Africa
East London, South Africa is located along the southeastern coast of the country. The topography in this region is diverse and includes coastal plains, rolling hills, and some mountainous areas inland. The city itself is situated on both the West Bank of Buffalo River and Nahoon River.
The coastal plains are relatively flat with sandy soil which would be suitable for large-scale solar PV installations. However, considering that East London experiences a subtropical climate with significant cloud cover and rainfall throughout the year, it may not be an ideal location for solar energy production as compared to other regions in South Africa.
Regions like Northern Cape or Western Cape have more arid conditions with higher sunlight exposure making them better suited for large-scale solar PV projects. These regions experience less cloud cover and rainfall which allows for maximum efficiency of solar panels.
In addition to geographical considerations, factors such as accessibility to power grids or substations should also be considered when planning large scale Solar PV installations.
However if we focus solely around East London area:
1) Areas north-west from East London towards Stutterheim could potentially serve well due to lower levels of annual precipitation compared to immediate coastal areas around East London city center.
2) Similarly, areas north-east towards Mthatha might also offer suitable locations given their relative dryness compared to immediate coastal surroundings.
Remember though these suggestions are purely based on general topographic features & climatic conditions; actual suitability would require detailed site surveys including analysis on local flora/fauna impacts etc.
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: Thursday 13th of June 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.
