Applying for a connection
Connecting to the National Transmission System (NTS) is suitable for a wide range of gas customers, including the largest consumers such as distribution networks, power stations, and large industrial enterprises. We will also connect newer forms of indigenous gas such as biomethane producers, small gas generators, shale and compressed natural gas users; we will open applications for this from late 2018.
We offer three types of connection: entry, exit, and storage. All new connections follow the Application to Offer (A2O) process.
We do not provide home or domestic connections. Please contact your local distribution network operator (DNO) with questions about domestic properties.
Application to Offer (A2O) process
Who should apply
Transmission connections are appropriate for a range of gas users, including:
gas distribution networks;
major industrial premises, such as power stations;
combined heat and power (CHP) schemes;
a few major energy-intensive industries; and
lower-flow gas users such as biomethane, small gas generators, shale and compressed natural gas (for application in late 2018).
How to apply
To start the process, you will need to:
submit a correctly completed and technically competent application form; and
deposit an application fee with us as cleared funds, as stated in Section Y of the Transportation Principal Document in the UNC.
How long it takes
The period from clock start to issue offer depends on the type of offer to be made.
An initial connection offer (ICO) will be made within two months;
A full connection offer (FCO) requiring a conceptual design study will be made within six months.
A full connection offer (FCO) requiring a feasibility study will provide the feasibility study report within three months, and the offer six months following acceptance of the report by the customer.
How much it will cost
Initial connection offer (ICO)
Timescales to provide an ICO
Application for new or existing connection (entry, exit, or storage)
|Simple||Up to 2 months||£14,000|
|Medium||Up to 2 months||£14,000|
|Complex||Up to 2 months||£14,000|
Full connection offer (FCO)
Timescales to provide an FO
Minimum offtake connection in a 'green-field' site (exit)
|Up to 6 months||n/a||n/a||n/a||£73,000*|
|Up to 9 months||£109,000#||£109,000#||£109,000#||n/a|
|Up to 9 months||£406,000#||£406,000#||£406,000#||n/a|
* Feasibility studies are not required for this category type.
# A Feasibility Study, Ramp Rate Study, transient analysis, or all three may be undertaken depending on the customer requirements for this category type. Where a Ramp Rate Study is required the Application Fee for a Ramp Rate Study will be added.
For more detail about the costs of the connection process, please download the Statement for Gas Transmission Connection Charging document.
Modifying an offer
A2O application form and guides
These documents include the application forms and application guides required to request an offer for a new connection.
Standard conditions of contract
Standard Conditions of Contract for the Design and Build of National Grid Facilities
Connection charging statements
Current charging statement
Connection charging statement - informal consultation (2018)
Connection charging statement - informal consultation (2017)
Connection charging statement - informal consultation (2016)
Past connection charging statements
Our regulator Ofgem requires us to publish a quarterly report on how effective we are in delivering connection offers.
Gas distribution connections
Cadent Gas provides a gas connection to existing and new-build domestic, industrial, and commercial properties.
Gas maps and routes
Find out the approximate location of our national gas transmission networks.
How we handle entry and exit capacity, including how to bid for entry capacity and apply for exit capacity, as well as current and historical capacity data.