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The Energy Networks Association (ENA) is the trade association for the energy networks. Our members own and operate the wires and pipes which carry electricity and gas into your community, supporting our economy. For more information about the ENA, please visit the corporate website.
G98 and G99 are ENA standards that outline the requirements for connecting generators in parallel with public low voltage networks. Standards G98 and G99 superseded the previous ENA standard G59 on 17 May 2019. G100 details the technical requirements for customers' export and import limitation schemes applicable after 1 May 2023. These standards are available free from the ENA Document Catalogue.
This Type Test Register enables logged in manufacturer users to enter details and upload type test documents for devices that are covered by the new standards. The data entered and documents uploaded are then made available for browsing and viewing by users.
The Energy Networks Association (ENA) has developed and hosts the site on behalf of its Distribution Network Operator (DNO) members in order to promote product identification and information sharing but it is the responsibility of the product manufacturers to upload and maintain data and documentation relating to their products. The ENA simply hosts manufacturers' data and their statements of compliance.
For a concise site overview and user guide (updated Sep 2022), please click here. To download a Powerpoint webinar (manufacturers' workshop 3rd Nov 2020) that introduces the system with emphasis on compliance assessment for manufacturers, please click here. For the G98/G99/G100 guidance forms, please click here.
The ENA assesses all Type Test Register submissions strictly in order of submission. The lead time for assessment is currently 4-6 weeks and there is no fast-track option. Latest assessments are updated on the site twice per month. A guideline to compliance status is detailed here .
The majority of data and documents on the site are available to all users without log in and an account is not required. Manufacturers can choose to flag uploaded documents as 'restricted' and these are only available to registered Distribution Network Operator (DNO) or Independant Distribution Network Operator (IDNO) users or users from the manufacturer of the device.
Further guidance on the availability of compliance status data depending on the category of user accessing the system is available here .
Registered DNO/IDNO or manufacturer users can log in by clicking here. Unregistered DNO/IDNO and manufacturer users without an account can request an account here. All initial registrations for any DNO/IDNO/manufacturer need to be approved by a system administrator at the ENA before they can be used but subsequent registrations can be approved by a nominated company administrator at the company.
If you have any problems or issues with the site or have any comments or suggestions for improvement, please let us know via our feedback page. We aim to respond to any feedback within 24 hours.
Energy Networks Association Ltd; Reg. Office: 4 More London Riverside, London SE1 2AU. Reg. in England No. 4832301