Technical Specification for New Generation Equipment

This page provides information and links for the connection of all additional generation equipment at the Park Ecovillage, Findhorn.

EREC G99

Connection of all generation equipment (including domestic scale PV) must comply with the version of EREC G99 current at the time of commissioning. Generation equipment includes PV systems, batteries, vehicle to grid capable EV charge points and any other source with the potential to supply electrical power to the grid.

Visit https://www.energynetworks.org/ and search the site for “G99” to access the current standards and the relevant forms to be completed. Connections at the Park fall into the G99 type A generating modules category.

Energy Networks Association Applications

Depending on the installation, an Energy Networks Association (ENA) application may need to be submitted. At the time of writing there is no facility to apply for a connection amendment. Instead, a new connection must be applied for that includes all the existing generation systems on the MPAN.

This is an expensive and lengthy process that requires technical knowledge. FWP will be the formal applicant, but Installers and/or consultants will need to work with FWP to prepare the application. FWP’s costs in preparing an ENA application are chargeable.

Please get in touch at an early stage to discuss your plans and the charges that will apply using the technical contact page.

Plug In Solar

From 27th August 2026 compliant plug in solar kits are approved for connection in the UK. To be compliant at the Park Ecovillage the kit must show G99 Type A approval in the ENA Type Test Register. Kits showing only G98 approval are not suitable for connection at the Park.

Domestic Scale PV, Batteries and G100

FWP hopes to be able to allow further private PV connections from October 2026. The terms for connection will be set by SSEN, but as a minimum FWP will require a single line diagram of the proposed installation including the following:

  • The number of phases and the fuse rating of the proposed connection to the NFD network.
  • Any existing battery, PV array or other source of generation.
  • Clearly distinguish DC and AC lines.
  • Clearly distinguish existing equipment and proposed new equipment. 
  • The maximum power rating of any PV array (or other generation equipment).
  • The specific model number(s) for the inverter(s) and the compliance certification for that model.
  • The specific model number for any battery and the compliance certification for that model.
  • The maximum export to the NFD network.
  • Details of any G100 system employed to limit the export including the compliance certification.
  • Screen shots from the ENA Type Test Register for each device to be fitted showing compliance with G99 Type A. These should be included in the same document as the single line diagram.