- A meter change will be required in the event of an SSEG installation.
- A bi-directional metering configuration will apply to the embedded generation tariff in the case of properties where SSEG systems are operated.
- It must also be noted that without a meter change or upgrade, any power exported at any time will not be credited. In instances where the meter is being reversed as a result of reverse power flow, all credits will be reversed and account adjusted. The cost of the meter change will be confirmed upon application.
- The eThekwini Municipal Electricity Planning Department will conduct such studies at a cost to the applicant. Network studies would be necessitated if the SSEG installation does not fall within the simplified NRS connection criteria.
Testing of Islanding Procedures
- Grid-tied inverters must have an anti-islanding function (immediate disconnection when there is a general power outage) as stipulated in the NRS 097-2-1.
- Should the inverter or SSEG installation have the facility to both comply with these anti-islanding requirements and operate in “islanded mode” where the SSEG installation supplies power to a portion of the customer’s electrical grid during a general power outage, it shall be effectively isolated from the municipal electrical grid during operation (as is legally required of any standby generator).
- If the SSEG installation is to be configured as a standby supply after islanding from the municipal electrical grid, a registered person in terms of the Electrical Installation Regulations (2009) shall issue a Certificate of Compliance to the owner if the generator is to be connected to the existing internal wiring of the property.
- Requirements of SANS 10142-1 – Clause 7.12 (Alternative supplies including low voltage generating sets, installations, etc.) apply. A fire safety and emergency shut off switch shall be installed where the SSEG installation is to be configured as a standby supply after islanding.
Decommission of a SSEG System and Transfer / Change of Ownership
- The Municipality requires notice of any SSEG system which has been decommissioned. The system shall be removed at the owners cost and a decommissioning report filed. If transfer/change of ownership takes place, a new certificate of compliance is required and a new application shall be submitted, or, alternatively, the SSEG system shall be decommissioned.
Professional Sign Off
- Until SANS 10142-Part 3: The Wiring of Premises - Embedded Generators and SANS 10142-Part 4: The Wiring of Premises – Direct Current and PV are published, all SSEG projects shall be signed off via the commissioning form by an ECSA registered professional and a certificate of compliance shall be issued.
- The sign off by a professional ECSA registered engineer or technician is mandatory and must be complied with for all installations.
Right to Deny Access
- All customers wishing to install a SSEG system, regardless of generation capacity, must complete all sections of the application process in full. The Municipality needs to ensure that, amongst other considerations, the SSEG installation can be accommodated on the municipal electrical grid and that the total SSEG capacity of the municipal electrical grid has not been exceeded.
- Equipment should not be purchased prior to obtaining written approval from the Municipality as approval is not guaranteed and the Municipality shall not be held liable for equipment expenses where approval is denied.
- The Electricity Supply By-Law states that no equipment may be connected to the municipal electrical grid without the express consent of the Municipality.
- Failure to obtain this consent constitutes an offence.
- Furthermore, the installation may also be in contravention of the Occupational Health and Safety Act, for which punitive sanctions also apply.
- Customers found to have illegally connected SSEG to the municipal electrical grid (either before or after their electricity meter) shall be instructed to have the installation disconnected from the municipal electrical grid. A Certificate of Compliance issued by a registered electrical contractor shall be required as proof of such disconnection.
- Should the customer fail to have the SSEG disconnected from the municipal electrical grid, the Municipality shall disconnect the electricity supply to the property.
Testing of Inverters
- Until such time as a SABS mark is issued for inverters, the Municipality shall require proof in the form of test certificates, of type tests having been successfully carried out by a third party testing authority certifying compliance of the inverters with NRS097-2-2. The use of inverters without such certification is not permitted, both in new and existing installations.
- The certification body must be SANAS accredited or be recognised by the International Laboratory Accreditation Co-operation (ILAC) or the International Accreditation Forum (IAF) in terms of ISO/IEC 17025:2005 for photovoltaic systems. The accreditation bodies must provide accreditation documentation for the specific test location.
- The approval by eThekwini Municipality only agrees to grid connection. Approval does not abdicate the applicant’s responsibility in abiding to the necessary acts, regulation, policy, standards and specifications that are currently in force.
- Availability and operational performance of the network is not guaranteed. EThekwini Municipality reserves the right to withdraw authority for synchronisation at its sole discretion, under normal or abnormal conditions, or as a result of new standards/procedures being adopted in this regard.
- Details pertaining to this application may be shared with relevant stakeholders as deemed necessary, including reporting to the National Energy Regulator of South Africa (NERSA).
- Upon synchronisation to the grid, eThekwini Municipality reserves the right to carry out audits (technical and safety), and issue recommendations/ instructions where necessary.
- It is the responsibility of the customer to ensure that the embedded generation system is correctly designed and operated in line with the relevant standards. The protection of the system as well as any insurance cover is the responsibility of the customer.