None

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Demand

This is the demand recorded by central metering. Actual demand is higher as some is met by embedded technology such as small wind turbines, and domestic solar panels. Solar power is not included in this figure.

Frequency

This is the grid frequency. Somewhat a measure instantaneous imbalance between supply and demand

Coal

The output from the last remaining British coal fired power stations

Nuclear

Total output of all of Britain's nuclear power stations

CCGT

Total output of all Britain's Combined Cycle Gas Turbine power stations

Wind

Output of all metered wind farms. Unmetered (embedded) wind farms are not recorded here, and will show only as a small drop in demand more or less in proportion to the metered wind farm outputs.

Pumped

The output of our pumped storage hydroelectric power stations. The power used to recharge them is not recorded, and again appears as an increase in demand, only.

Hydro

The total output of all our hydroelectric power stations

Biomass

This reflects the larger wood burning power stations, such as Drax's converted coal boilers.

Oil

Almost never used, and in fact it is not clear whether any operational plant still exists

Solar

This is the estimated output of solar power, provided by Sheffield University. It must be stressed that this is a best guess, not an actual measured output, and there are reasons to suppose it is perhaps 10% larger than reality.

OCGT

This is a record of Britains's Open Cycle Gas Turbine plants. These are operated only at times of peak demand, as they are 'gas guzzlers'. A little more is being built as part of the Short Term Operating Reserve plant - plant paid to be available at short notice to cover peak winter demend

French ICT

The import (positive) or export (negative) of power via the French Interconnector

Dutch ICT

The import (positive) or export (negative) of power via the Dutch Interconnector (BRITNED)

Irish ICT

The import (positive) or export (negative) of power via the Irish Interconnector from Scotland (Moyle)

E-W ICT

The import (positive) or export (negative) of power via the Irish Interconnector from Wales (East-West)

NEMO ICT

The import (positive) or export (negative) of power via the NEMO Interconnector from Kent to Belgium

Other

This field used to represent biomass, but that now has its own field. It is not clear what this field currently represents: Possibly some STOR capacity like diesels.

North-South

This is a measure of power flow recorded by the National grid from the North of England to the South.

Scotland-England

This is a measure of power flow recorded by the National grid from Scotland to England. It is of particular interest to those looking to assess the impact of the closure of Scotland's nuclear and coal plant on the economy of a putatively independent 'all renewable' Scotland.

French ICT 2

The import (positive) or export (negative) of power via the second (2021) French Interconnector

French INTELEC

The import (positive) or export (negative) of power via the third Channel Tunnel French Interconnector

Norway ICT

The import (positive) or export (negative) of power via the Norway Interconnector

Viking ICT

The import (positive) or export (negative) of power via the Norway Viking Interconnector

All

Use this button to select all the fields

Time

22:30

>

Day

13

Month

0

Year

2009

Time

00:00

>

Day

26

Month

0

Year

2013

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