Electricity Ten Year Statement - National Grid

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2.4 continued Generating capacity Figure 2.4.4: Contracted background capacity mix GW (installed capacity) 180 160 140 120 100 80 60 40 20 0 Figure 2.4.4 illustrates the capacity mix for the contracted background. Please note that as we continue to sign new connection agreements on an ongoing basis the latest TNQCU, which is available on the National Grid website, should be referred to for an updated position. Page 26 2012 2013 2014 Nuclear Onshore Wind 2015 2016 2017 2018 2019 2020 Coal Other Renewables 2021 2022 2023 2024 2025 Gas/CHP Interconnector 2026 2027 2028 2029 2030 2031 2032 Offshore Wind Other (Oil/Pumped)
Figure 2.4.5: System development and use of generation backgrounds 2.4.6 Sensitivity Analysis The generation background that underpins each scenario can be described as a credible way in which the underlying premise of the scenario will be met. We recognise, however, that subtle differences in the make-up of the generation background may have a significant impact on the future development of the transmission system. Therefore it is prudent to assess these ‘sensitivities’ to the main scenarios. The approach we have taken is to take the underlying principles of the Gone Green scenario e.g. 30 GW of wind capacity in 2020, and analyse the impact on a regional basis. What is the impact of moving ‘x’ GW of capacity from one location to another, while keeping the total in that particular scenario the same? Electricity Ten Year Statement November 2012 Alongside this, it is prudent to assess the impact, on a regional basis, of generation projects being developed to the contracted connection date. In essence, this results in a variant of the Gone Green scenario and the contracted background on a regional basis. This allows an assessment of specific areas where there may be a need for additional and/or earlier reinforcement than in the three main energy scenarios. The way in which the contracted background and the three main scenarios complement each other with regard to the development of the network is illustrated above. Simply at a local level reinforcement is driven by the connection agreements in the contracted background, with the wider system development being scenario-driven. At a regional level the contracted background is considered alongside the scenarios by means of the sensitivity analysis described above. Page 27
Page 1: Electricity Ten Year Statement UK e
Page 5 and 6: Contents Foreword /////////////////
Page 7 and 8: future transmission reinforcement.
Page 9 and 10: Falling fault levels on the system
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Page 13 and 14: 1.2 Methodology The document itself
Page 15 and 16: The appendices include: System Sche
Page 17 and 18: 2.1 Future Energy Scenarios Our ene
Page 19 and 20: 2.3 Demand This section describes t
Page 21 and 22: In Slow Progression, end-users’ p
Page 23 and 24: Figure 2.4.1: Slow progression gene
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Page 29 and 30: Figure 2.5.1: Contracted background
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Page 35 and 36: The government review of ROC bandin
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Page 39 and 40: Figure 2.6.5: Onshore wind contract
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Page 43 and 44: 2.8 Non-GB generation In addition t
Page 45 and 46: Figure 2.9.2: Gone green embedded g
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Page 49 and 50: 3.1 Introduction Electricity Ten Ye
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Page 53 and 54: The boundary capability is then the
Page 55 and 56: Co-ordinated designs have been deve
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Boundary Discussion and Opportuniti
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Table EC7.1: List of potential rein
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3.6 North Wales local boundaries 3.
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3.6.3 Boundary NW1 Figure NW1.1: Ge
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1 Reinforcement date triggered by p
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Table NW2.1: List of potential rein
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3.6.5 Boundary NW3 Figure NW3.1: Ge
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Table NW4.1: List of potential rein
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3.7 Wider boundaries 3.7.1 Boundary
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Figure B1.2: Required transfer and
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Electricity Ten Year Statement Nove
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3.7.2 Boundary B2 Figure B2.1: Geog
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Table B5.2: Selection and timing of
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Table B6.1: List of potential reinf
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3.7.8 Boundary B7a Figure B7a.1: Ge
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Figure B7a.2: Required transfer and
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Changes in the capacity and geograp
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3.7.10 Boundary B9 Figure B9.1: Geo
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3.7.12 Boundary B11 Figure B11.1: G
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3.7.15 Boundary SC1 Figure SC 1.1:
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Table SC1.2: Selection and timing o
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Table B14.1: List of potential rein
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3.7.17 Boundary B14(e) Boundary B14
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In 2018 there is a proposal to conn
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Table B15.1: List of potential rein
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3.8.2 Inputs Future Energy Scenario
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The range of solutions identified w
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1 The Electricity Scenarios Illustr
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3.8.6 Development of current year o
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Figure 3.8.2: Stopping or delaying
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For regions where the boundary tran
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Table 3.8.5: Northern England trans
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Table 3.8.7: Northern England reinf
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Table 3.8.9: Lowest cost strategies
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East Coast and East Anglia Identifi
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Table 3.8.12: Lowest cost strategie
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The worst regrets for each of the o
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The worst regrets for each of the o
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developed incrementally alongside t
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North Wales, South Wales and possib
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Table 3.12.1 It is expected that an
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The boundaries currently assessed r
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4.1 Introduction Electricity Ten Ye
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Figure 4.1.2: Gone green wind produ
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4.2 System operability Figure 4.2.1
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4.3 System design and operation cha
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Figure 4.3.3: System inertia change
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4.3.2 Impact on System Strength (Fa
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Figure 4.3.6: Fault level variation
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There are other factors which will
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Figure 4.3.9: Q/P ratio over a 24hr
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4.3.3 Power Flow Volatility In the
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1 Impact of Intermittency, Poyry su
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1 Andersen, P., “Da stormen tog t
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4.4.2 Parallel Operation of AC and
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4.4.6 Energy Storage The storage of
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5.1 Introduction Electricity Ten Ye
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5.3 Stakeholder engagement The ETYS
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Electricity Ten Year Statement - National Grid

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