Keimoes, Northern Cape, South Africa presents an excellent location for year-round solar PV energy generation, situated in the Southern Sub Tropics at coordinates -28.7007, 20.9711. This location demonstrates strong solar energy potential across all seasons, making it highly suitable for solar installations.

Seasonal Solar Performance

The solar energy output at Keimoes shows impressive consistency throughout the year. Summer delivers the highest production at 8.97kWh per day per kW of installed solar capacity, while spring follows closely with 8.25kWh per day per kW. Even during the lower-production months, autumn generates 6.01kWh per day per kW, and winter still produces a respectable 4.71kWh per day per kW. The ideal times for solar generation at this location are clearly summer and spring, when output exceeds 8kWh per day per kW. However, the location's strength lies in its year-round viability, with winter production still maintaining nearly 53% of peak summer output.

Optimal Panel Configuration

For maximum year-round solar production at Keimoes, Northern Cape, fixed solar panels should be tilted at 25 degrees facing north. This angle has been calculated to optimize total annual energy output by accounting for the sun's changing position throughout the year and weighting the angles based on actual solar irradiance data.

Environmental and Weather Considerations

Several local factors at Keimoes could potentially impact solar production and require attention during installation:

• Dust and sand accumulation: The semi-arid Karoo environment can lead to significant dust buildup on solar panels, reducing efficiency
• Extreme temperature variations: Desert-like conditions create large temperature swings that can stress solar equipment
• Occasional severe weather: Thunderstorms and hail events, though infrequent, can damage installations
• High UV exposure: Intense solar radiation can accelerate degradation of panel materials and mounting systems

Preventative Measures for Optimal Performance

To maximize energy production and system longevity at Keimoes, Northern Cape, several installation strategies should be implemented:

• Regular cleaning systems: Install automated cleaning systems or establish frequent manual cleaning schedules to remove dust accumulation
• Quality mounting systems: Use robust, corrosion-resistant mounting hardware designed for extreme temperature variations
• Hail-resistant panels: Select solar panels with higher impact ratings and consider protective measures for severe weather events
• Enhanced ventilation: Ensure adequate airflow around panels to manage heat buildup and maintain efficiency
• UV-resistant components: Choose cables, connectors, and mounting materials specifically rated for high UV environments

Despite these environmental challenges, Keimoes remains an excellent location for solar PV installations. With proper planning and preventative measures, the consistently high solar output potential can be fully realized, making it an ideal choice for both residential and commercial solar energy projects.

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 Keimoes

Seasonal solar PV output for Latitude: -28.7007, Longitude: 20.9711 (Keimoes, 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 25° North in Keimoes, South Africa

To maximize your solar PV system's energy output in Keimoes, South Africa (Lat/Long -28.7007, 20.9711) throughout the year, you should tilt your panels at an angle of 25° 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 Keimoes, 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 Keimoes, South Africa. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 25° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° North in Summer	34° North in Autumn	44° North in Winter	22° 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 Keimoes, 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 Keimoes, South Africa.

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 Keimoes, South Africa

Topography and Landscape Around Keimoes

Keimoes sits in the Northern Cape Province of South Africa, positioned along the Orange River valley in a region characterized by relatively flat to gently undulating terrain. The landscape here forms part of the greater Kalahari Basin, where the topography is dominated by low-lying plains and subtle ridges that rarely exceed modest elevations above the surrounding countryside.

The Orange River creates a distinctive green corridor through this otherwise arid landscape, with the river valley itself sitting at a lower elevation than the surrounding plains. Moving away from the river, the terrain gradually rises into broad, flat-topped plateaus and gentle slopes that extend toward the horizon. These elevated areas are typically covered with sparse vegetation adapted to the semi-desert conditions, including scattered shrubs, grasses, and occasional thorn trees.

The soil composition in the region varies from sandy deposits near the river to harder, more compact surfaces on the elevated plains. Rocky outcrops are relatively uncommon, though small koppies and low ridges do punctuate the landscape at intervals. The overall impression is one of vast open spaces with excellent visibility across long distances, interrupted only by the occasional farm building, windmill, or irrigation infrastructure associated with agricultural activities along the river.

Optimal Areas for Large-Scale Solar Development

The elevated plateaus and gentle slopes situated away from the Orange River valley present the most promising locations for large-scale solar photovoltaic installations. These higher elevation areas offer several distinct advantages over the river valley floor, including reduced risk of flooding, minimal agricultural competition, and more consistent terrain suitable for mounting systems.

The flat to gently sloping plateaus extending north and south of Keimoes provide ideal conditions for solar development. These areas typically feature stable, well-drained surfaces with minimal vegetation that would require clearing. The consistent topography allows for efficient layout of solar arrays with minimal grading or earthworks required, which helps reduce installation costs and environmental impact.

Areas positioned on the slight rises and broad ridges offer additional benefits, including natural drainage and reduced dust accumulation compared to lower-lying locations. The open nature of this terrain also facilitates access for construction and maintenance vehicles, while providing ample space for the transmission infrastructure needed to connect large installations to the electrical grid.

The region's distance from major urban centers means that large tracts of suitable land remain available for development without competing with residential or commercial uses. The sparse population density and limited alternative land uses in these elevated areas make them particularly attractive for utility-scale solar projects that require significant acreage to achieve economic viability.

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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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.