G99 DNO Application Service

We Take Away The Hassle

UK DNO map electricity distribution network

Hassle-Free DNO Application

In-depth and reliable G99 DNO


G59 Projects offer our clients a professional, reliable and cost-effective service to carry out the grid connection for a G99 DNO application. Starting from just £249 + VAT for a Domestic system, we take the hassle away and deal with the DNO on your behalf.

If you are a Domestic Installer or Homeowner looking to outsource this aspect, a Large Commercial Installer, or even just looking for a one off project, contact us today to see how we can help.

We will ask you to supply us with some basic information so we can begin to compile our application package. Once we have all the information we need, we then compile our in-depth application package to submit to your local DNO. As you will know, a DNO application is not just a case of “filling in the form” to get your project through. You need to supply the DNO with supporting documents and drawings and that is where we specialize!

We have completed countless DNO applications and as such we know what the engineers want to see land on their desk when they look at a new project. By using G59 Projects to send in all the relevant information, straight away you’re preventing any hold ups. We always make sure we only submit an application once we have all the relevant information.

What We Require

To Compile A G99 Application For Connection We Will Require The Following Information For PV Systems:


  • Full Site Address

  • Contact name & email address for the person onsite in charge of the electricity supply

  • Full MPAN Number (s)

  • Single Phase or 3 Phase System

  • Number of Panels you are installing and the model number (i.e 250w)

  • Data Sheet for PV Panels

  • Make, Model and Number of Inverters you are using

  • Data Sheet for Inverters

  • G99 Certification for the inverters (if not G99 compliant inverters we also build G99 Relay panels so we can include this in the application if required?)

  • Google earth image showing location of installation with a pin dropped on the roof space being used and the mains meter location.

  • Signed Letter of Authority (please contact us for a template)

  • Details of Any Existing Installation (number of panels and make and model of inverter(s))

  • Date of Existing Installation

What We Require

Battery Storage


For Battery Storage AC Coupled

  • • Make & Model of Battery Inverter

    • Number of Inverters

    • Datasheet and G99 Certificate for the Battery Inverter

    • Batteries Being Installed & Quantity

    • Datasheet for Batteries

For Battery Storage Hybrid Systems

  • • Batteries Being Installed & Quantity

    • Datasheet for Batteries