Power Network

Distributed Generation

Course summary

Distributed generation (DG), from wind farms, solar power and domestic generation systems, is a growing factor in power network design and operation and can have considerable effects on electricity supply systems.

This course will guide you through the essentials of distributed generation and the impact it has on electricity networks both at low and high voltages. The course will give you detailed knowledge of engineering recommendations, technical requirements for connections (including G98 and G99), operation of networks and network design, as well as giving you an understanding of the commercial issues affecting connection agreements.

The course will consider both the current situation and future potential of distributed generation, using real life case studies, distributed generation modelling software and the latest research and development as reference.

Course itinerary

Distributed Generation

  • Background and history
  • Reasons for distributed generation
  • The changing energy landscape


  • Types of distributed generation
  • Characteristics of generators
  • Technical impact of distributed generation on the network

Connection – DNO Requirements

  • Legislation
  • G99 update
  • Potential connection issues

Connection – Technical Requirements

  • Small scale (domestic)
  • Larger scale (LV)


  • Protection principles
  • Specific distributed generation protection requirements
  • Case studies

Testing for G98/G99 Compliance

  • Overcurrent and earth fault location
  • Reverse power
  • Voltage and frequency limits
  • Loss of mains and “ISLANDING”

Classroom Exercises

  • Multiple choice distribution quiz


  • What is modelling?
  • Modelling for distributed generation

The Future for Distributed Generation

  • DNOs’ response to the challenges
  • Overview of projects
  • What’s next?

Questions and Discussion 

Programme may be subject to amendment.

Why attend?

  • Develop understanding of the impact of distributed generation on power networks
  • Understand the key parameters involved in specification installation and commissioning of DG networks and connections
  • Deliver best value through cost effective connection agreements.
  • Develop specialist DG skills that are in short supply within the industry.
  • Update your knowledge of technology and connection regulations.

Excellent course. I would love to hear about supplementary courses that are available with EA, to extend my knowledge.

John, 7-8 December 2022

Excellent presenters and clearly very knowledgeable. Would have liked to know more about how we connect sites to substations although that might be a different course. Overall, I learnt loads and really enjoyed it so big thank you.

Andras, 7-8 December 2022

Enjoyed the course with some great content. Would be interested in seeing G99 modelling software. The quiz is a great game to get everyone involved.

Etete, 7-8 December 2022

Excellent course that covers everything from the basics to a more advanced level.

Lauren , 7-8 December 2022

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