When we are looking at installing solar PV systems, battery storage or other forms of on-site energy , obtaining ‘grid’ consent is required. Typically, this is called a G99 application, though there are various options for connecting dependent on type and size of solar and storage install.
These are:
- G98: Connect and Notify – Up to a maximum of 16A or 3.68kW per phase. Typically used for a small domestic solar PV system.
- G99: Apply to Connect – For projects greater than 16A or 3.68kW per phase. Typically used for Solar PV for businesses or larger domestic solar and battery.
- G99 Fast Track: Apply to connect – Solar and battery only. This is a quicker application process but the solar and battery must match certain criteria.
- G100: Export limitation. This limits the amount of Solar energy which goes back to the grid and can reduce connection costs.
‘Grid’ is a term that is often used to encompass several organisations that operate the electricity network. One of the key stakeholders for domestic and commercial rooftop scale solar and battery installs is the Distribution Network Operator (DNO).
There are several DNO’s that operate across the UK, divided into regions as per the below graphic. All of which do follow similar guidance and general rules. However, in this rapidly changing landscape there are also considerable discrepancies between DNO’s. In particular, there are areas of Scotland where connecting commercial solar and storage projects have greater success than others.
Gensource are experts at navigating this space. Our team has extensive experience of submitting grid applications, liaising with DNO’s over their offers, and presenting the results and options to the customer following a response from the DNO. Our team are currently engaged in multiple Scotland and UK wide solar energy grid forums which include DNOs, national governments and key industry stakeholders. Gensource really are at the forefront of the industry for connecting on-site sustainable energy systems to the grid.
Beware of advice such as the below, and question; Am I being guided through the process properly?
- ‘No need to worry about grid if you are going to use all your solar energy on site’ – Wrong, you are still connecting to the grid.
- ‘G100 export limitation will avoid the need for an application as you won’t export back to the grid’ – Wrong, export limitation devices can still have an influence on the grid and require prior applications.
- ‘Installing a battery will remove the need for a grid application’ – Batteries have the ability to store solar energy and also discharge back to the grid. The correct application is still required.
Grid applications are more than just a paperwork exercise and are integral in making the management of the network safe and efficient, which benefits us all. As part of the process several supporting documents are required to be submitted, many of which require solid technical input relating to the design of the proposed sustainable energy systems.
The risks of not getting it right include, significant project delays, unexpected costs, and in some cases having your solar and storage system disconnected, leaving you with a stranded asset and wasted investment. It’s important to choose the right partner.
Through both, our consultancy services, and energy services, Gensource can be engaged to liaise with DNO’s or submit full grid applications on behalf of our clients. Starting the development of your project off on the right foot is paramount to the successful delivery and operation of your on-site sustainable energy system.
If you have any questions regarding grid applications, please reach out to hello@gensource.co.uk
