For installers, understanding what qualifies as Small-Scale Embedded Generation (SSEG) and when registration is required can help avoid compliance issues and disputes with clients.
The Core Definition — Parallel Operation and Why "No Export" Still Matters
The key factor in determining whether a solar system falls under SSEG is not whether it exports electricity, but whether it operates in parallel with the utility network.
A system is generally considered embedded generation when it is connected to the electricity network and can operate alongside Eskom or municipal power.
This includes:
- Grid-tied solar systems
- Hybrid solar systems
- Battery systems connected to the grid
- Systems configured for zero export
Many customers assume that a zero-export setting removes the need for registration. However, if the system remains connected to the grid and can operate in parallel with the network, registration may still be required.
Installers should explain that "no export" and "off-grid" are not the same thing.
Examples
Registration usually required:
- Hybrid inverter connected to Eskom supply
- Solar system with batteries and grid backup
- Zero-export commercial solar installation
- Residential grid-tied PV system
Registration generally not required:
- Completely off-grid cabin
- Remote farm installation with no utility connection
- Standalone solar-powered structure disconnected from Eskom or municipal supply
Capacity Thresholds
Many customers focus on system size and assume that smaller systems do not require registration. In reality, registration requirements are usually based on the type of connection rather than the size of the installation.
For systems under 100 kVA, installers should explain that:
- Grid-connected systems may still require registration
- Municipal and Eskom processes may differ
- Exporting electricity is not always the deciding factor
- Compliance requirements apply even to smaller installations
Proof of Off-Grid
Clients sometimes request an off-grid solution specifically to avoid registration requirements. Installers should maintain proper records to demonstrate that the installation is genuinely off-grid.
Useful documentation includes system design drawings, single-line diagrams, site photographs, commissioning reports, and customer sign-off documents.
These records should clearly show that no connection exists to Eskom infrastructure, no municipal supply is connected, no parallel operation is possible, and the system functions independently.
Installer Risk
Ignoring registration requirements can create problems for both installers and customers, including delays when selling a property, compliance concerns, utility investigations, and additional administrative costs.
Installers can reduce risk by discussing registration requirements during the sales process, using compliant equipment, keeping complete project records, providing accurate documentation, and avoiding assumptions about registration exemptions.
Municipal vs Eskom Registration Requirements
Registration procedures are not always the same across South Africa. Properties supplied directly by Eskom typically follow Eskom's registration process, while properties supplied by municipalities may be subject to different application procedures, technical requirements, approval timelines, and metering requirements.
Conclusion
For solar systems under 100 kVA, registration requirements are usually determined by whether the system operates in parallel with the electricity network rather than by system size alone.
Grid-tied and hybrid systems generally require registration, even when configured for zero export. Installers who understand the distinction between grid-connected and off-grid systems, maintain proper documentation, and communicate requirements clearly can avoid disputes and help clients remain compliant.
