The Future of Britain’s Energy MixNational Symposium on Future Electricity Networks – January 2011

Richard Smith – Future Transmission Networks ManagerDavid Mercer – Construction Manager, Major Works

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UK energy landscape is changing

Gas from UK sources

~25%of total supplies by 2020

Sustainability

Affordability

Security of supply

Existing powerstation closures

~25%of total capacity by 2020

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The need for change

Electricity

Gas

Oil

2010 2020 2050

No renewable target

80% reduction in CO2

emissions vs 1990

15% of energy from

renewables

34% reduction in CO2

emissions vs 1990

No renewable target

22% reduction in CO2

emissions vs 1990

499Carbon intensity(gCO2/kWh)

15%% of end use energy

~200Carbon intensity(gCO2/kWh)

~20%% of end use energy

~15Carbon intensity(gCO2/kWh)

~50%% of end use energy

184Carbon intensity(gCO2/kWh)

42%% of end use energy

184Carbon intensity(gCO2/kWh)

~40%% of end use energy

184Carbon intensity(gCO2/kWh)

~35%% of end use energy

247Carbon intensity(gCO2/kWh)

43%% of end use energy

247Carbon intensity(gCO2/kWh)

~40%% of end use energy

247Carbon intensity(gCO2/kWh)

~15%% of end use energy

End use oil & gas excludes oil and gas used in power generation

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The future – efficiency and

electrification

Heat pump

new homes & retrofitDecarbonised electricity…

and decarbonise

transport

TransportHeatElectricity

Efficiency and innovationInsulate and reduce

Smart Meters & Appliance efficiency

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Coal fired power stations

Photo courtesy of Drax*non-CCS plant

zero*by 2050

~15GWby 2020

~28GWtoday

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Gas fired power stations

Photo courtesy of Centrica*non-CCS plant

zero*by 2050

~31GWby 2020

~28GWtoday

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Nuclear power stations

Photo courtesy of British Energy

~30GWby 2050

~11GWby 2020

~10GWtoday

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Wind & other renewables

~47GWby 2050

~37GWby 2020

~8GWtoday

Renewables includes wind, wave, tidal and biomas, waste etc.

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Carbon Capture & Storage (CCS)

~25GWby 2050

~3GWby 2020

zerotoday

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Building the electricity network

France

France

Netherlands

Belgium

Norway

Ireland

existing network

potential wind farm sites

potential nuclear sites

interconnectors

Historic power flows

generally north – south

Future power flows vary in time and direction

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Onshore Regime

Efficient

Economic

Environment

Co-ordinated

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New Connections

Connection Offer

Use Existing

Uprate

Additional

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Optioneering Reports

Evaluate reasonable options

Overhead, Underground, AC/DC, Subsea

Document

Preferred Connection

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Consenting

Technology and costs

IET/KEMA

Consultation

Approach to Undergrounding

IPC/MIPU

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Offshore regime

National electricity transmission system

(onshore & offshore) operated by:

� National Grid Electricity Transmission

Onshore transmission built and owned by:

� National Grid Electricity Transmission

� Scottish Power Transmission Ltd� Scottish Hydro-Electric Transmission Ltd

Offshore transmission built and owned by:� Wind farm developer (build option only)

� Offshore transmission owner (OFTO) –

competitive tender process

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Offshore transmission

Radial solution Integrated solution

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UK energy landscape is changing,

we must:

Inform and partner with customers and communities

Work and lead with our regulators and policy makers

Seize the opportunity