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G99 support

Generation, storage and EV connection design

Grid connection design for solar, wind, battery storage and EV charging, including G99 application support.

Solar arrays, battery containers and charging posts connected to a step-up transformer.

What we do

Generation, storage and EV charging projects need a connection design that reflects both the site and the network operator’s offer. We review the proposed import and export requirements against the point of connection.

Connection single-line diagrams and compound arrangements set out how generation, battery equipment or charging infrastructure interfaces with the supply. We coordinate the substation and connection equipment within the agreed design scope.

We support G99 submissions and technical discussions with the DNO. Network capacity and acceptance remain subject to the operator’s assessment.

Standards we design to

We identify the applicable requirements at the start of the agreed design scope.

  • ENA Engineering Recommendation G99
  • ENA Engineering Recommendation G100 where export limitation applies
  • Relevant DNO generation connection requirements

Who this is for

This service supports energy developers, commercial and industrial. We agree the design interfaces, responsibilities and required outputs with your team before work begins.

Talk to us about your project

Tell us where the project sits and what you need.

Discuss a project