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G99 & G100
Bespoke Training Courses.

Knowledge is a most important possession that increases when shared
Real expert knowledge can only be reached through a collective effort. We are able to increase common know-how by sharing it in multiple conferences, training courses and seminars. The easy access to this knowledge is held in this website.

G99 Tranining

Meet Kevin – Our First Student from the North of Scotland

We are pleased to welcome Kevin to G99 Training, and proud to say he is our first student to travel down from the north of Scotland to train with us.
Kevin’s journey is a great example of just how far the reach of G99 Training is growing. On the previous course, we welcomed a student who travelled from Italy, and before that we trained three DNO engineers.
It’s fantastic to see people travelling from such a wide range of locations and professional backgrounds to take part in our practical G99 training.
A big thank you to Kevin for making the journey — it was a pleasure to have him with us.

G99 Tranining

Meet Our First Student from Italy – 2026 🎉

We were pleased to welcome Patrick P to G99 Training — and proud to say he’s the first student to join us from Italy.
Patrick completed our G99 Witness Test Training, gaining hands-on experience in protection testing and compliance. Seeing our training reach beyond the UK is something we genuinely appreciate.
A big thank you to Patrick for making the trip — we hope he’s the first of many from Italy and beyond.

G99 Tranining

Here Is Our Latest Training Engineer – 2026 🎉

We’re proud to introduce our first training engineer of 2026, who has successfully completed our G99 Witness Test Training.

The high standard of engineers coming through our doors reflects the professionalism and ambition now driving the renewable and grid-connection sector — and we’re proud to support that journey.

G99 Tranining

Meet Joe, one of our recent trainees, who has successfully completed the G99 training program. This hands-on course has equipped him with the knowledge and confidence to take on real-world testing challenges.
During training, Joe used the DVS 3 Mark 2 tester — a modern, reliable tool that ensures accurate results and prepares trainees for real industry standards.

Upcoming
Training
Dates

22–23 October 2026

All places available

22–23 November 2026

All places available

Online Training

We are delighted to offer comprehensive online training courses that you won't find anywhere else.

We now have great information on both fault levels and the head room situation, that comes from these calculations, and knowing these things will give you a massive advantage when you talk with your DNO.
James SellerRemmer Electrical
"I would just like to thank the guys at G99 training, for the great online courses I am working through at the moment, this is a fantastic way to get training and Im so glad I signed up, I am waiting for the next stage of my training which is, how I go about actually doing a full witness test, so great work and i'm waiting for the next installment."
Craig TaneyHV Energy Solutions
"I have to say that I thoroughly enjoyed the entire process. All content, structure, and knowledge obtained will be invaluable moving forward in my career so, thank you for this."
We hope our banner will indicate to you that we are about to show you some magic … here at G99.training, we are doing the equivalent of breaking the magicians oath, that being, to never tell the secrets of the trick.
Now we are doing just that, as we have uploaded our fully explained G99/2 DNO witness test training session and this is the ONLY place you will ever find these secrets. All of the other test engineers stick to the magician’s code and they never tell you the tricks that get them through a Witness Test. Now we have broken the rules and its on our online training portal for all to see!
This will be a great course for anyone who wants to know how to carry out a full DNO Witness test. It will also be very helpful for any student who has been on one of our training courses anytime in the last 20 Years.
Because like anything if you don’t practice something frequently you will forget, but now you have our online portal where you can get training on all the areas you may need updating on. I hope you can spare some of your lockdown time to get you or your companies’ electricians up to speed with all things G99/2 and G98/1-2 and don’t forget good old G100/1-3.

Testimonials

G99 Tranining

Feedback From Our trainees

Our learners come from a variety of backgrounds, including electrical engineering, renewable energy, and installation services. Here’s what some of them had to say after completing our training. From improved confidence in understanding G99 standards to hands-on testing knowledge, their experiences reflect the practical value of our courses. Your success is our goal — and their words speak volumes.

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Get In Touch

If you are looking for a bespoke training session for your staff why not get in touch to discuss your requirements?

Our training sessions can be held at your offices or workshop.

Contact Us Today

Accreditations

Testimonials

  • Everything is transparent. It was very good.

    Pat Thompson

    Very informative, Dave is a wealth of knowledge and breaks the course down to make training simple.

    Richard Fitzgerald
  • The training was very informative and paced to suit our level of knowledge and experience. I would highly recommend the training for anyone looking at G99 relay testing.

    Thomas Jones

    I thoroughly enjoyed it and the lunch were a good position and laid out very nicely. I like my food, thank you very much.

    Johannes Moolman
  • First to give a bit of context, I had limited knowledge regarding G99 requirements and I’ve never done any protection relay testing before. But thanks to Dave, I really understand the purpose of the test and how to perform it on the G99 relay. It is also nice to have access to the online courses to expand my understanding on the G99 grid connection process.

    Jonathan Le Blanc

    Thanks Dave. Excellent Course Material.

    Quentin Oakley
  • Really Helpful, Great Information. All Great, Thanks.

    Robert Smith

    All Great! Excellent!

    Wayne Dubois
  • The work they did impressed me on multiple levels. I have been very happy about the whole process and they have done a great job. Always helpful with our questions!

    Richard Brennan

    We have been very much impressed by G99 Training. Needless to say we are extremely satisfied with the results. Thank you!

    Elena Gonzales
  • Great Job. And all because of the awesome guys from G99.training.

    John Jones

    I really liked the training given on the testers.

    Andrew Evans
  • The course is a lot more intensive than I had expected, but great information.

    James Mabbet

    Loved this course.

    Jamie Dunleavy
  • Everything is transparent. It was very good.

    Pat Thompson
  • Very informative, Dave is a wealth of knowledge and breaks the course down to make training simple.

    Richard Fitzgerald
  • The training was very informative and paced to suit our level of knowledge and experience. I would highly recommend the training for anyone looking at G99 relay testing.

    Thomas Jones
  • I thoroughly enjoyed it and the lunch were a good position and laid out very nicely. I like my food, thank you very much.

    Johannes Moolman
  • First to give a bit of context, I had limited knowledge regarding G99 requirements and I’ve never done any protection relay testing before. But thanks to Dave, I really understand the purpose of the test and how to perform it on the G99 relay. It is also nice to have access to the online courses to expand my understanding on the G99 grid connection process.

    Jonathan Le Blanc
  • Thanks Dave. Excellent Course Material.

    Quentin Oakley
  • Really Helpful, Great Information. All Great, Thanks.

    Robert Smith
  • All Great! Excellent!

    Wayne Dubois
  • The work they did impressed me on multiple levels. I have been very happy about the whole process and they have done a great job. Always helpful with our questions!

    Richard Brennan
  • We have been very much impressed by G99 Training. Needless to say we are extremely satisfied with the results. Thank you!

    Elena Gonzales
  • Great Job. And all because of the awesome guys from G99.training.

    John Jones
  • I really liked the training given on the testers.

    Andrew Evans
  • The course is a lot more intensive than I had expected, but great information.

    James Mabbet
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G99 Training
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