Connecting an inverter to the UK grid typically involves several key steps and procedures to ensure safety, compliance and that the inverter interacts effectively with the grid. The following is the general process:
1. Compliance Inspection and Certification:
- First, ensure that the inverter meets the technical specifications of the UK grid, such as G98 or G99 standards, depending on the capacity and impact of the inverter. This includes inverter performance, safety standards and grid compatibility.
- The inverter should also have the necessary certifications, such as the CE mark, indicating compliance with EU safety, health and environmental requirements.
2. Application and Notification:
- Before installation, the installer or owner needs to submit a connection application to the local power grid company (Distribution Network Operator, DNO). This may include completing specific forms providing detailed specifications of the equipment and installation plans.
- For small home systems, the G98 standard usually applies and only prior notification to the DNO may be required.
- For larger systems, the G99 standard applies and a more detailed technical evaluation and approval process may be required.
3. Technical Assessment:
- For large or high-impact inverter systems, the grid company may require a technical assessment to ensure that the connection of the system will not have a negative impact on the grid. This may include on-site assessments, system design reviews and simulation testing.
4. Installation and Inspection:
- The installation of the inverter and related systems needs to be completed by qualified professionals to ensure compliance with all technical and safety standards.
- Once installation is complete, a final inspection may be required by an authorized inspector or the grid company to confirm that the system has been installed and operates in compliance with all requirements.
5. Grid-connected operation:
- Once the inverter system has passed the final inspection and received grid connection approval from the power grid company, the system can be officially integrated into the grid for operation.
- The inverter will need to be configured to ensure that it automatically adjusts its output during grid operation, responding to grid demands and changes in status.
6. Continuous Monitoring and Maintenance:
- After being connected to the grid, the system may require regular maintenance and monitoring to ensure its continued safe and efficient operation.
- Grid companies may require systems to provide real-time data to monitor their impact on the grid.
The linkage and grid connection process may vary by region and specific grid company, it is recommended to contact your local grid operator for detailed guidance and requirements. This ensures that the installation and operation of the inverter meet all relevant regulations and technical standards, while also making efficient use of grid resources.
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