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Restoration Services
System Security Services

Restoration (formerly known as Black Start) is the process used to restore power in the event of a total or partial shutdown of the national electricity transmission system.

Service Description

A total or partial shutdown of the national electricity transmission system (NETS) is an unlikely event. However, if it happens, we are obliged to make sure there are contingency arrangements in place to ensure electricity supplies can be restored in a timely and orderly way. We use restoration services to recover from such a shutdown.

It is possible to provide other balancing services, if doing so does not interfere with your ability to restore the electricity system.

The restoration service can be procured from a range of Power Generating Modules (PGM) or HVDC systems that have the capability to re-start from shutdown without reliance on external supplies. Top-up services to supplement the technical requirements in any given zone are also procured alongside these full service provisions. The restoration tenders launching in 2022, invite Distributed Energy Resources (DER) services providers for a bottom up  approach to restoration from distribution to transmission level.

During a shutdown, the service requires the provider to re-start, carry out initial energisation of sections of the national electricity transmission system and distribution network and restore sufficient demand to create and manage a stable ‘power island’.

The contracted provider may be required to deliver start up supplies to other assets/sites as the system restoration progresses and will eventually be required to synchronise to other power islands.

Not all Power Generating Modules or HVDC Systems have, or are required to have, the capability to provide restoration services, this capability should ideally be considered when the plant is being built, although we may procure services where this capability can be retrofitted and is economic to do so.

Service Procurement Stages



Service dispatch

When do providers need to be available to deliver this service?

Providers of the restoration services are expected to achieve high availability levels. When the contracted site or asset is unavailable to provide the service, the ESO must be advised. Availability payments will then cease until the provider re-declares its availability. Settlement periods where the provider is unavailable will be accrued and assessed annually.

How will providers be dispatched?

In the event of a partial or total system shut down, providers of restoration services will be instructed by the Electricity System Operator’s control room, with the general guidance of a site specific restoration plan.

How often will providers be dispatched?

Initiating the procedures is considered to be a low likelihood event. However, wetest the delivery of this service at least every three years, as set out in the Grid Code.


Getting Paid

Payments will be applicable depending on the type, age,status, etc. of the Power Generating Module or HVDC System Contract Terms.

Availability payment (£/settlement period) – a payment for being available to provide restoration services.

Contribution sums – these payments are available to new or refurbishing plant only. Where the installation, or refurbishment of capital assets at the contracted site would return a valuable restoration service, we may choose to contribute towards the provider’s costs. This may be in the form of profiled (staged) or upfront payments, all supported by valid invoices.

We reserve the right to request further evidence to verify that the works have been completed.

Documents

Our key documents can be found in each tab on the left hand side.

Northern Tender

The ESO has launched a tender to provide Restoration Services in the Northern region. Below you will find all the information and documents required to submit an EOI.

This procurement event will incorporate learnings from the Distributed ReStart project for a potential bottom-up restoration to supplement the traditional transmission-connected generation.

You can watch a webinar on the tender process for Electricity System Restoration in the Northern region below:

Northern ESR tender webinar playback

South East Tender

The ESO has launched a tender to provide Restoration Services in the South East region as covered by the South East DNO (UKPN) boundary. Below you will find all the information and documents required to submit a complaint EOI.

This will be the first procurement event incorporating learnings from the Distributed ReStart project project for a potential bottom-up restoration to supplement the traditional transmission-connected generation.

Latest News

Distributed ReStart is a world-first initiative. Distributed energy resources (DER) can be used to restore power to the transmission network in the unlikely event of a total or partial shutdown of the national electricity transmission system (NETS).

Distributed Restart

Archive

Our archive contains documents from previous years.

Updated Contract Terms

You can get in touch with us using [email protected].