Renewable gas connections - how it works

Make an initial enquiry about your location

The first steps on our shared journey is understanding the potential for our network to accept the volume of green gas your site produces.

We'll need:

• Indicative geographic site location information
• High-level indication of the potential network injection rate (in standard cubic metres per hour)

This enquiry service is free of charge. We will return your results within 15 working days.

Fill out the initial enquiry form

We'll perform a detailed analysis on your site and its capacity

We'll develop detailed analysis on your specific site to understand any potential constraints on our network.

This comprehensive report assesses the network's ability to accept gas for injection at your requested connection point. This report is chargeable.

We may need to conduct a feasibility study

A feasibility study may be required depending on the complexity and pressure tier you wish to connect to.

For example, all transmission connections will require a detailed feasibility study covering the physical connection onto the existing network and, depending on the approach you select, the transmission pipeline construction and design.

Finalise an agreement to connect to our network

Following the studies, you'll be able to select one of the following options to connect to our network as green gas producer:

• Formally agree with SGN to construct the pipeline and associated assets to connect your plant and our network.
• Arrange with a third party to construct the pipeline and associated assets to connect your plant and our network, engaging us through the relevant procedures governing potential adoption of those assets by SGN at the pressure tier your plant will export at.
• Arrange with an independent gas transporter (IGT) to construct and own the pipeline and associated assets to connect your plant and our network, and request the IGT to work with us to facilitate the final connection of those assets.

Where SGN provides these new pipeline and associated assets, or we adopt them, you will also need to enter into a Network Connection Agreement with SGN covering the connection of the network entry facility onto the SGN network, and a Network Entry Agreement with SGN covering the enduring arrangements for injecting gas into our network. If an independent gas transporter provides those assets and owns them on an enduring basis, you will likely need to enter into similar arrangements with that entity.

Follow these steps if you opt for a third party to construct the new gas transportation assets.

As described above, where your preference is that the new gas transportation assets are constructed by a third party with a view to adoption by SGN the relevant procedures to consider are:

• in the case of pipeline and associated assets below 7 bar, the GIRS scheme operated under LRQA together with the SGN processes that facilitate our coordinated interface with its approved operators;
• in the case of pipeline and associated assets above 7 bar, SGN specification SLO-1 “Specification For Audit Framework For Above 7 Barg (Natural Gas) Self-Lay Projects” which sets out the circumstances under which SGN will adopt such assets (see the link below); and
• in the case of the network entry facility for your plant (whether above or below 7 bar), SGN specification BIO2 “Specification for Biomethane Network Entry Facility, Remotely Operable Valve and Controls” which sets out the circumstances under which SGN will adopt such assets (see the link below).

Download the BIO2 Specification

Download the SLO-1
 

Please contact SGNSLO1Enquiries@sgn.co.uk if you wish to discuss the SLO-1.

SLO-1 Commitments

SGN has entered into Commitments with Ofgem, including in relation to the maintenance and content of the SLO-1 and to the decisions taken under it. The Commitments are available at Ofgem’s website here. Details as to how to make a complaint regarding SGN’s compliance with the Commitments are available below.

Download the SLO-1 Commitments Compliance Complaints Documentation