The connections charging process.

When you apply for your connection, there will be a charge for the application, depending on the size and location of your proposed scheme. The fees are set annually and published by the ESO who also publish an application fee calculator: Connections Offer Process

We may need to carry out works on the transmission system that, although directly attributable to the connection, may not result in additional connection assets. These works are defined as 'one-offs'. 

One-off charges are established based on: whether a cost can be capitalised as either a connection or infrastructure asset; whether the cost has been incurred as a result of a non-standard request; or where we have had to ‘write-off’ some connection assets as a result of a termination. 

You can model your securities including consents using our ConnectNow Research Assistant tool.  

If a new connection conflicts with another existing connection, for example a District Network Operator Grid Supply Point or another customer connection, we may need to conduct third party works to make assets safe. If your connection requires these works, you will, be charged accordingly.  

You will need to lodge ‘securities’ with the ESO for your connection project whilst our connection works are ongoing. Securities provide commercial commitment for the investments we undertake to deliver your project and are drawn down on in the event that you decide to cancel your connection project or reduce your capacity requirements after our work has begun. There are multiple routes to lodge securities depending on your organisation’s credit rating. The ESO can help you understand your options. Raise a request via their customer portal to find out more. 

This covers the day-to-day costs the ESO incurs for balancing generation and demand on a minute-by-minute basis. BSUoS is calculated daily as a flat tariff for all network users.  

The Electricity System Operator provides a forecast of BSUoS as part of the monthly balancing services summary report. 

View the Balancing Services Use of System (BSUoS) charges. 

When we, as an electricity Transmission Owner, connect your business to the National Electricity Transmission System (NETS), we incur costs which we recover through connection charges. These costs include the design and build of any connection assets, which vary from connection to connection but could include the procurement and installation of transformers, switchgear, metering, cables, and short sections of overhead lines and their associated civils works. The cost of clearing and preparing land for your new connection is also included. Take a look at our Connection Charges leaflet to learn more. 

When you reach the stage where you would like to wholly or partially disconnect from the National Grid electricity system, you are required to pay a termination charge. 

If connection assets become redundant in the process of your site's disconnection, you will be required to pay an amount equal to the residual asset value at the end of the financial year in which the termination of your connection occurs.  You will also be required to consider: 

• The reasonable costs of removing these assets to ensure the connection site is fully operational and ready for future use 

• If a termination occurs before the end of a financial year, the connection charge for the full year remains payable. Any remaining 'Use of System' charges (TNUoS and BSUoS) also remain payable 

• Previous capital contributions paid will be taken into account in the termination charge, as well as the impact of any impending asset replacements on residual asset value 

If specific decommissioning works are needed to make your asset safe, we will charge you for any works necessary. If you terminate before your connection, our decommissioning work may include restoring the asset to its previous condition.