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Energy: Wind Generation

Volume 716: debated on Tuesday 26 January 2010

Questions

Asked by

To ask Her Majesty's Government what is their assessment of the estimate by the energy consultancy Utilyx that wind energy has produced 0.2 per cent of the United Kingdom's energy requirement during the recent cold spell. [HL1405]

The contribution of wind electricity during the recent cold spell depends on what time period the cold spell is defined as. Looking at daily generation data during the period 1 January to 15 January, operationally metered wind contributed between 0.2 per cent and 2.2 per cent of total operationally metered generation over this period, with an average of around 1 per cent.

These data are made available by National Grid and only refer to wind power which is operationally metered, i.e. around half of the UK onshore wind farms and none of the offshore wind farms. Data from DECC providing a more complete coverage of wind farms are available on a two to three month lagged basis.

Asked by

To ask Her Majesty's Government what was the availability of wind-produced electrical power at periods of peak demand during the recent cold weather. [HL1441]

Peak transmission system demand fell between 5 and 6 pm every day during the recent cold spell (defined in this PQ as 1 to 15 January 2010). The generation by wind power during this hour is given in table 1, along with the load factor.

These data are made available by National Grid and only refer to wind which is operationally metered, i.e. around half of the onshore wind farms and none of the offshore wind farms.

Table 1: Electricity supplied by wind during peak demand

Date

MWh produced between 5 and 6 pm

Percentage of electricity supplied relative to theoretical maximum supply

1 January

375

24

2

479

31

3

152

10

4

326

21

5

657

42

6

246

16

7

72

5

8

150

10

9

134

9

10

957

61

11

790

50

12

1128

72

13

491

31

14

292

19

15 January

999

64