FAQ

Grid-Tied Solar Solutions: These systems are connected to the local utility grid, allowing farmers to use solar power during the day and draw from the grid at night or during cloudy periods. Excess energy can be fed back into the grid, potentially earning credits.

Hybrid Solar Solutions: Combining solar panels with battery storage and a connection to the grid, hybrid systems provide greater flexibility and reliability. They can store excess energy for use during power outages or peak demand times.

Off-Grid Solar Solutions: Ideal for remote farms, off-grid systems operate independently of the utility grid. They rely on solar panels and battery storage to provide a continuous power supply, making them perfect for locations without grid access.

Roof-Mounted Solar Panels: These are installed on the rooftops of farm buildings, making efficient use of existing space. They are often easier to install and maintain, and they can help reduce cooling costs by shading the roof.

Ground-Mounted Solar Panels: These systems are installed on the ground, offering flexibility in panel orientation and tilt to maximise sunlight exposure. They are suitable for farms with ample land and can be scaled up easily to meet higher energy demands.

Installing batteries with your farm solar system can significantly enhance energy reliability and efficiency. Batteries store excess solar energy generated during the day, allowing you to use it during the night or during periods of low sunlight. This reduces dependency on the grid and provides a backup power source during outages. Additionally, batteries can help manage peak demand times, potentially lowering energy costs and ensuring a consistent power supply for critical farm operations.

Eskom requires farm solar systems to meet specific technical and safety standards before connecting to their grid. These requirements include:

1. Compliance with NRS 097-2-1: Ensuring the solar system adheres to the South African grid code for embedded generation.
2. Inverter Certification: Using inverters that are certified and approved by Eskom.
3. System Size Limitations: Adhering to size limits based on the farm’s existing electrical infrastructure and Eskom’s guidelines.
4. Application and Approval: Submitting a detailed application, including system design, technical specifications, and safety measures, for Eskom’s review and approval.
5. Installation by Qualified Professionals: Ensuring the system is installed by certified professionals to guarantee safety and compliance.
6. Metering Requirements: Installing appropriate metering equipment to measure energy production and consumption accurately.
7. Safety and Protection Measures: Implementing necessary safety measures, such as surge protection and isolation devices, to protect both the farm and the grid.

Meeting these requirements ensures a safe and efficient integration of the solar system with Eskom’s grid.

NERSA registration or approval is required for solar systems based on their size and intended use:

1. Systems Above 1 MW: Any solar system with a capacity greater than 1 MW must obtain NERSA approval. This involves a detailed application process to ensure compliance with regulatory standards.

2. Systems Between 100 kW and 1 MW: These systems typically require registration with NERSA. While the process is less stringent than for larger systems, it still involves submitting relevant documentation and ensuring compliance with local regulations.

3. Systems Below 100 kW: Generally, these smaller systems do not require direct NERSA registration or approval. However, they must still adhere to local standards and may require approval from the local municipality or utility provider.

It’s essential to consult with a professional installer or NERSA to ensure all regulatory requirements are met for your specific solar installation.

A micro-grid is a localised energy system that can operate independently or in conjunction with the main grid. It typically includes renewable energy sources like solar panels, battery storage, and sometimes backup generators.

You might need a micro-grid on your farm for several reasons:

1. Energy Reliability: Micro-grids provide a stable and reliable power supply, reducing dependency on the main grid and minimising the impact of power outages.
2. Cost Savings: By generating and storing your own energy, you can reduce electricity costs and potentially sell excess power back to the grid.
3. Sustainability: Micro-grids enable the integration of renewable energy sources, helping to reduce your farm’s carbon footprint.
4. Energy Independence: They offer greater control over your energy resources, allowing you to manage and optimise energy use according to your farm’s specific needs.
5. Resilience: Micro-grids enhance the resilience of your farm’s energy supply, ensuring critical operations can continue even during grid failures.

Yes, step-up and step-down reticulation can help consolidate and potentially reduce the number of Eskom transformers on your farm. By optimising voltage levels for efficient power transmission and distribution, you can streamline your electrical infrastructure. This can lead to fewer transformers being needed, as the system becomes more efficient in managing and distributing power across various farm operations. Consolidation can also result in cost savings and simplified maintenance. However, it’s essential to work with a professional to ensure that any changes comply with Eskom’s standards and regulations.

Independent assurance assessments for existing solar systems provide several key benefits:

1. Compliance Verification: Ensure your system meets current international and local standards, regulations, and quality benchmarks.
2. Performance Evaluation: Assess the efficiency and performance of your solar system, identifying any areas for improvement.
3. Safety Assurance: Verify that all safety measures are in place and functioning correctly, reducing the risk of accidents or system failures.
4. Documentation Accuracy: Confirm that all documentation is up-to-date and accurate, which is crucial for maintenance and potential future upgrades.
5. Long-Term Reliability: Gain insights into the long-term reliability of your system, helping to plan for future maintenance and upgrades.
6. Investment Protection: Protect your investment by ensuring that your solar system is operating optimally and delivering the expected returns.