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Offshore Transmission Network Review

The Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy are reviewing the offshore transmission network, including transmission network use of system (TNUoS) charging arrangements and electricity interconnection schemes. The review addresses cost barriers to offshore wind development in Scotland and other regions ahead of Contract for Difference allocation rounds.

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2026

15 events
29 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, what recent estimate his Department has made of the amount of community benefits paid to a) the United Kingdom, b) Scotland and c) the S

To ask the Secretary of State for Energy Security and Net Zero, what recent estimate his Department has made of the amount of community benefits paid to a) the United Kingdom, b) Scotland and c) the Scottish Highlands in 2025.

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29 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, if he will ensure that new Energy Transitional Certificates uphold high environmental standards to protect UK seas from oil and gas oper

To ask the Secretary of State for Energy Security and Net Zero, if he will ensure that new Energy Transitional Certificates uphold high environmental standards to protect UK seas from oil and gas operations.

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29 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, whether his Department made an assessment of the impact of zonal pricing of electricity on inward investment into Scottish low carbon el

To ask the Secretary of State for Energy Security and Net Zero, whether his Department made an assessment of the impact of zonal pricing of electricity on inward investment into Scottish low carbon electricity.

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29 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, if he has made an estimate of the total output of Torness nuclear power station over the last year and what proportion of Scottish gener

To ask the Secretary of State for Energy Security and Net Zero, if he has made an estimate of the total output of Torness nuclear power station over the last year and what proportion of Scottish generation this represents.

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29 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the total system costs of maintaining grid stability over the last five years for which data is available.

To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the total system costs of maintaining grid stability over the last five years for which data is available.

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29 Apr 2026 | Written question Department for Energy Security and Net Zero Context · primary home: Energy Independence Bill linked

To ask the Secretary of State for Energy Security and Net Zero, pursuant to Answer of 17 April 2026 to Question 124401, what assessment he has made of the adequacy of the tools available to system ope

To ask the Secretary of State for Energy Security and Net Zero, pursuant to Answer of 17 April 2026 to Question 124401, what assessment he has made of the adequacy of the tools available to system operators to manage periods …

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24 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, what assessment he has made of the electricity demand of large-scale data centres, in (1) the UK and (2) those located in the North East

To ask the Secretary of State for Energy Security and Net Zero, what assessment he has made of the electricity demand of large-scale data centres, in (1) the UK and (2) those located in the North East; and what plans …

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24 Apr 2026 | Written question Department for Energy Security and Net Zero Context · primary home: Energy Independence Bill linked

To ask the Secretary of State for Energy Security and Net Zero, what steps his Department is taking to reform TNUoS charging arrangements ahead of CfD Allocation Round 8.

To ask the Secretary of State for Energy Security and Net Zero, what steps his Department is taking to reform TNUoS charging arrangements ahead of CfD Allocation Round 8.

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24 Apr 2026 | Written question Department for Energy Security and Net Zero linked

To ask the Secretary of State for Energy Security and Net Zero, whether Peak Cluster Limited has submitted to his Department or to Ofgem any societal risk assessment (FN curve analysis) under BS PD 80

To ask the Secretary of State for Energy Security and Net Zero, whether Peak Cluster Limited has submitted to his Department or to Ofgem any societal risk assessment (FN curve analysis) under BS PD 8010 Parts 1 and 3 comparing …

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2024

3 events
24 May 2024 | Committee report linked

We are nevertheless concerned that recent Government adjustments to the incentives for take-up of these technologies by consumers may affect the capacity of the grid to deliver the benefits of flexibility in the short- to-medium-term: this in turn may affect the willingness of investors to commit to leading and supporting grid development initiatives. It is desirable that, as far as possible, Ministers should publish the rationale behind all decisions on changes to energy transition policies,...

We are nevertheless concerned that recent Government adjustments to the incentives for take-up of these technologies by consumers may affect the capacity of the grid to deliver the benefits of flexibility in the short- to-medium-term: this in turn may affect …

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24 May 2024 | Committee report linked

We recommend that the Department for Energy Security and Net Zero and Ofgem actively monitor the progress of connection reform initiatives and the delivery of the transmission capacity required to facilitate new grid connections, and, where appropriate, streamline the measures already introduced. In particular, we recommend that Ofgem review its milestone queue reforms with a view to advancing projects which are demonstrably ready to connect to the grid to the front of the queue.

We recommend that the Department for Energy Security and Net Zero and Ofgem actively monitor the progress of connection reform initiatives and the delivery of the transmission capacity required to facilitate new grid connections, and, where appropriate, streamline the measures …

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24 May 2024 | Committee report linked

Moving essential elements of the energy infrastructure supply chain into the UK is likely to strengthen the supply chain while creating jobs, improving the UK economy and protecting existing skills.

Moving essential elements of the energy infrastructure supply chain into the UK is likely to strengthen the supply chain while creating jobs, improving the UK economy and protecting existing skills. Type: conclusion | Number: 28 | Paragraph: 107 | Response …

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2023

4 events
28 Apr 2023 | Committee report linked

The UK’s offshore wind sector is a success story. The Government has ambitious plans to scale up offshore wind deployment, maximising the potential of the UK’s natural resources. However, unless rapidly addressed, current bottlenecks in the process will stand in the way of the Government achieving its ambition for 50 GW of offshore wind to be deployed by 2030. While we commend the Government for the work being done to speed up the deployment of offshore wind, and to ensure local communities t...

The UK’s offshore wind sector is a success story. The Government has ambitious plans to scale up offshore wind deployment, maximising the potential of the UK’s natural resources. However, unless rapidly addressed, current bottlenecks in the process will stand in …

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28 Apr 2023 | Committee report linked

In response to this report, the Government should set out how it is monitoring progress against its ambition to deploy 50 GW of offshore wind by 2030. The Government should also set out how it will be responding to the recommendations of the UK Offshore Wind Champion. Furthermore, local communities which host critical national infrastructure must see tangible benefits from doing so, and connections between offshore wind farms and transmission networks need to be better co-ordinated to minimis...

In response to this report, the Government should set out how it is monitoring progress against its ambition to deploy 50 GW of offshore wind by 2030. The Government should also set out how it will be responding to the …

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8 Mar 2023 | Committee report linked

Wider decarbonisation goals should be considered when planning grid infrastructure. The UK Government should continue to appraise National Grid ESO’s Holistic Network Design and follow-up exercise with this in mind and ensure opportunities for decarbonisation in Wales are not missed when decisions over where to connect floating offshore wind in the Celtic Sea are made. The UK Government should update us on work to strengthen the grid in South West Wales to accommodate future generation in the...

Wider decarbonisation goals should be considered when planning grid infrastructure. The UK Government should continue to appraise National Grid ESO’s Holistic Network Design and follow-up exercise with this in mind and ensure opportunities for decarbonisation in Wales are not missed …

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8 Mar 2023 | Committee report linked

Strategic planning of grid infrastructure will be essential for accommodating future GW targets in the Celtic Sea. National Grid ESO have stated that proposals on how to develop the network in the region will be given when more detail is known on the capacity and location of future floating offshore wind projects. Visibility of future targets in the Celtic Sea and a clear roadmap will therefore be essential for the timely planning of grid infrastructure. To accommodate these targets in time t...

Strategic planning of grid infrastructure will be essential for accommodating future GW targets in the Celtic Sea. National Grid ESO have stated that proposals on how to develop the network in the region will be given when more detail is …

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2022

5 events
21 Oct 2022 | Committee report linked

The Committee welcomes that Celtic Sea projects have been included in the list of infrastructure projects in the UK Government’s Growth Plan and notes the recent decision by The Crown Estate to seek to accelerate the leasing process where possible. This appears only to be possible in Wales if improvement to grid infrastructure is also accelerated and we would welcome a clear commitment from the UK Government on this point.

The Committee welcomes that Celtic Sea projects have been included in the list of infrastructure projects in the UK Government’s Growth Plan and notes the recent decision by The Crown Estate to seek to accelerate the leasing process where possible. …

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21 Oct 2022 | Committee report linked

The UK Government should work with National Grid ESO, NGET, the DNOs and Ofgem to revise consenting processes to align the allocation of grid capacity with the application for planning permission. National Grid’s work should be expedited on reviewing commercial contracts with developers reserving grid capacity, where those projects have consistently failed to achieve planning permission.

The UK Government should work with National Grid ESO, NGET, the DNOs and Ofgem to revise consenting processes to align the allocation of grid capacity with the application for planning permission. National Grid’s work should be expedited on reviewing commercial …

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25 Feb 2022 | Committee report linked

We recommend that revised (draft) EN-4 includes explicit and precise wording on hydrogen, Carbon Capture and Storage and other technologies that will more clearly demonstrate how the move away from fossil fuels will be achieved. This must specifically include reference to the infrastructure required, for example for the transmission of CO2, and not just the specific types of technology used at source, such as Carbon Capture.

We recommend that revised (draft) EN-4 includes explicit and precise wording on hydrogen, Carbon Capture and Storage and other technologies that will more clearly demonstrate how the move away from fossil fuels will be achieved. This must specifically include reference …

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25 Feb 2022 | Committee report linked

We recommend that EN-5 is updated to reflect the outcome of the Offshore Transmission Network Review (OTNR). We understand the revised Energy NPS is expected to be laid before Parliament before the OTNR is due to be completed. The Department should consider how the potential outcome of the OTNR should be reflected in revised EN-5, but without causing significant delay to the publication of the revised NPS.

We recommend that EN-5 is updated to reflect the outcome of the Offshore Transmission Network Review (OTNR). We understand the revised Energy NPS is expected to be laid before Parliament before the OTNR is due to be completed. The Department …

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2021

7 events
17 Sep 2021 | Committee report linked

The grid is critical for renewable energy to reach consumers. Urgent investment is needed in the grid to ensure that net zero targets are met. The grid needs to be reinforced and expanded to ensure that renewable energy generated in Scotland can connect to the grid and benefit the rest of the UK. We recommend that Ofgem completes a review of the grid in Scotland as a matter of urgency, and at the latest by the end of 2022 to implement changes in good time for the 2045 target. Ofgem should mak...

The grid is critical for renewable energy to reach consumers. Urgent investment is needed in the grid to ensure that net zero targets are met. The grid needs to be reinforced and expanded to ensure that renewable energy generated in …

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17 Sep 2021 | Committee report linked

The evidence we have heard has highlighted issues around the volatility of transmission charges. The short-term volatility of transmission charges is a barrier to the development of renewable energy as it affects confidence in investment and the future cost of a project.

The evidence we have heard has highlighted issues around the volatility of transmission charges. The short-term volatility of transmission charges is a barrier to the development of renewable energy as it affects confidence in investment and the future cost of …

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17 Sep 2021 | Committee report linked

Locational transmission charges weigh more heavily on developers in Scotland when projects in other areas of the UK, like Wales, are paid to connect to the grid. The financial burden of transmission charges and grid investment needs to be justly shared across the UK and not fall heavily, and unjustly, on the developers of renewable energy projects in Scotland. The current review by Ofgem about locational transmission charges is not happening at a fast-enough pace.

Locational transmission charges weigh more heavily on developers in Scotland when projects in other areas of the UK, like Wales, are paid to connect to the grid. The financial burden of transmission charges and grid investment needs to be justly …

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17 Sep 2021 | Committee report linked

We recommend that the UK Government specifies that, as part of its internal review, Ofgem must consider the financial burden of transmission charges in Scotland. Ofgem should consider the long-term impacts on net zero targets and aim for a way to ensure renewable energy projects have the chance to flourish over the next 30 years, rather than pushing for a short-term, lowest cost view. Ofgem should publish the result of their internal transmission charges review as soon as practicable, and cer...

We recommend that the UK Government specifies that, as part of its internal review, Ofgem must consider the financial burden of transmission charges in Scotland. Ofgem should consider the long-term impacts on net zero targets and aim for a way …

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29 Jul 2021 | Committee report linked

Interconnectors have been proven to provide strong benefits for decarbonisation, because of this the role of interconnectors is expected to greatly increase in the decades leading to net zero. As an interconnector in Wales would allow excess energy, which is likely to be created due to the abundance of wind energy in the country, to be exported rather than curtailed, there are clear opportunities for Wales to benefit. This is particularly significant for Welsh waters in light of the EU’s requ...

Interconnectors have been proven to provide strong benefits for decarbonisation, because of this the role of interconnectors is expected to greatly increase in the decades leading to net zero. As an interconnector in Wales would allow excess energy, which is …

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29 Jul 2021 | Committee report linked

Further to the UK Government’s recent collaboration with the EU on a potential North Sea grid, the UK Government should consider the opportunity for further export from the Celtic Sea to the continent and the creation of a Celtic Sea Economic Zone.

Further to the UK Government’s recent collaboration with the EU on a potential North Sea grid, the UK Government should consider the opportunity for further export from the Celtic Sea to the continent and the creation of a Celtic Sea …

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29 Jul 2021 | Committee report linked

The UK Government must recognise that Wales’ increase in renewable energy development and generation may be significantly hindered by grid constraints if action is not taken. To mitigate this risk, the UK Government must work in collaboration Renewable energy in Wales 29 with Ofgem to plan anticipatory investment in Wales, so that the significant uplift in renewables generation which is likely to occur is not handicapped by our currently severe grid constraints. The UK Government must also en...

The UK Government must recognise that Wales’ increase in renewable energy development and generation may be significantly hindered by grid constraints if action is not taken. To mitigate this risk, the UK Government must work in collaboration Renewable energy in …

▤ View document · ↗ GOV.UK