Powering Africa's Future

Why Do You Need a Grid Impact Study for Your Solar System?

Grid Impact Studies are a mandatory requirement for Municipality Small Scale Embedded Generation (SSEG) applications where the inverter capacity exceeds 350kVA. At Zenith Power Analytics, we provide end-to-end Grid Impact Studies to ensure your Solar PV (Photovoltaic), PV + BESS (Battery Energy Storage System), or standalone BESS installations comply with all technical, regulatory, and grid connection requirements.

How Zenith Power Analytics Can Help

Zenith Power Analytics manages the entire Grid Impact Study process, from initial data collection through to the submission of a professionally signed-off report. Our experienced power systems engineers ensure that every study meets municipal, utility, and regulatory requirements while facilitating a smooth approval process.

1. Information Gathering from the Client

To perform a comprehensive Grid Impact Study, Zenith Power Analytics collects the following information:

Single Line Diagram (SLD): Including inverter ratings, transformer details, cable specifications, protection systems, and cable lengths for the proposed PV, PV + BESS, or BESS installation.

Renewable Energy Production Data: Typical annual generation profiles from simulation software such as PVSyst, PVSol, Helioscope, Homer, or equivalent platforms.

Compliance Documentation: NRS 097 compliance certificates, type test reports, and manufacturer documentation for all relevant equipment.

Embedded Generation Application Documentation: Copies of submitted SSEG or embedded generation application forms and supporting documents.

Load Consumption Data (where available): A minimum of 12 months of interval metering data, including demand profiles, energy consumption, and power factor measurements at the Point of Connection (PoC).

2. Information Gathering from the Utility or Municipality

Zenith Power Analytics liaises with the relevant municipality, utility, or network operator to obtain critical network information, including:

Source Substation and Feeder Information: Single Line Diagrams, feeder configurations, transformer ratings, and network operating arrangements.

Network Impedance Data: Equivalent source impedance and network parameters at the Point of Connection.

Fault Level Information: Existing and projected short-circuit levels on the network.

Network Loading Data: Historical and current loading information for feeders, transformers, and associated infrastructure.

Protection System Information: Existing protection settings and network operational requirements where applicable.

Network Schematics and Operational Drawings: Detailed utility network diagrams required for accurate modelling.

3. System Modelling and Technical Analysis

Once all required information has been obtained, Zenith Power Analytics develops a detailed power system model incorporating both the proposed generation facility and the existing utility network.

Using industry-leading software platforms such as DIgSILENT PowerFactory, we perform:

Load Flow Studies
Voltage Regulation Assessments
Thermal Loading Analysis
Fault Level Studies
Power Quality Assessments
Reverse Power Flow Analysis
Protection Coordination Reviews
Grid Code and NRS Compliance Verification
BESS Charging and Discharging Impact Assessments

Our studies evaluate the technical impact of the proposed installation on the distribution network and identify any potential mitigation measures required for approval.

4. Professional Grid Impact Study Report

The results of the technical assessment are compiled into a comprehensive Grid Impact Study Report that includes:

Executive Summary
Network Description
System Modelling Assumptions
Study Methodology
Technical Results and Findings
Compliance Assessment
Recommendations and Mitigation Measures
Conclusion and Approval Support Documentation

All reports are reviewed and signed off by a Professional Engineer (Pr Eng) in accordance with municipal and regulatory requirements.

5. Municipal and Utility Approval Support

Where required, Zenith Power Analytics provides ongoing support throughout the approval process by:

Preparing technical presentations for municipal or utility review committees.
Responding to technical queries from reviewing engineers.
Assisting with revisions and additional study requirements.
Supporting clients during approval meetings and technical review sessions.
Providing supplementary technical documentation to facilitate project approval.

Why Choose Zenith Power Analytics?