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A safe and reliable network
As the electricity transmission owner in England and Wales, we're responsible for the safe and reliable operation of an extensive network of assets. Our role is to protect the public and those who work on our network, from the inherent dangers associated with providing a high voltage electricity transmission supply.
We have over 14,000 circuit kilometres of overhead line, 3,000 circuit kilometres of underground cables and over 300 substations, providing the electricity stakeholders and end consumers rely on.
What this stakeholder priority is about
Our main responsibility as a transmission owner is to ensure a safe and reliable electricity transmission network. Our network needs to be available to our customers, when they need it, to provide secure power supplies for consumers.
To fulfil this role, we need to maintain high safety standards that protect our employees, contractors, stakeholders and the public. To achieve the level of reliability expected by our stakeholders, we need to keep our assets in a healthy condition.
This means monitoring their condition, and intervening at the right time to maintain, refurbish or replace them.
What you can find in this chapter
What this stakeholder priority is about
Track record and implications for T2
What our stakeholders are telling us
Our proposals for the T2 period
The justification for our proposals
Our proposed costs for the T2 period
How we will manage risk and uncertainty
End to end description of stakeholder engagement and how it has influenced our plan
Investment decision packs set out the technical need case, options assessed and proposed investments.
Overhead Line (OHL) Conductors and Fittings
Overhead line (OHL) towers and foundations
Substation Other and Other TO equipment
The cost benefit analysis below demonstrates the investment modelling for supporting our decision through various options considered.
Shows how the asset management decisions taken in RIIO-T1 have benefitted consumers in RIIO-T2 and beyond
Proposals for an incentive on network reliability
Description of how we have built and optimised the plan to ensure long term health and reliability of assets
Lead Asset outputs
Stakeholder feedback | Proposal | T2 baseline value | Consumer benefit |
|---|---|---|---|
Complywith all relevant safety legislation. | Maintain our safety standards, aiming for zero harm to our employees, contractors, stakeholders and the public. | N/A | Protected from potential harm relating to the work we carry out on our assets. |
Maintain levels of reliability, at an affordable cost. Recent ENS performance should be weighted more heavily than long-term performance. | Create a tougher T2 target for ENS which more heavily weights recent performance. Independent Stakeholders Group to provide challenge throughout the T2 period. | N/A | World class levels of reliability. Maintain access to critical energy supplies when needed. |
Maintain levels of network risk, at an affordable cost. Ensure short-term decisions do not limit future system opportunities. | We will maintain our network risk position through condition monitoring, maintenance, repair, refurbishment and replacement of our assets. We will deliver this work at lowest cost (on average per unit) by embedding innovation. | £2,251m | Long-term reliability, at a lower cost, for current and future consumers. Modernisation of the network to support digitization, through the renewal of assets. |
Non-Lead Asset outputs
Stakeholder feedback | Proposal | Non baseline value | Consumer benefit |
Maintain levels of network risk, at an affordable cost. Ensure short-term decisions do not limit future system opportunities. | We are proposing more outputs for our non-lead areas. Along with NARM, this will provide coverage for over 80% of our plan for this priority. We are committing to develop NARM outputs for more substation and circuit assets in T2. | £1,368m | Long-term reliability, at a lower cost, for current and future consumers. Modernisation of the network to support digitization, through the renewal of assets. |