-
Warning Type
Effective From
Time Effective From
Time Effective To
Shortfall (MW)
Date Warning Cancelled
Time Warning Cancelled
NISM
2008-11-08
16:00
19:30
1900
2008-11-08
06:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 16:00 hrs to 19:30 hrs on Saturday 08/11/2008
There is insufficient System Margin System margin shortfall 1900 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 06:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 23:30 hrs on 07/11/2008
Issued by Mike Cousins National Grid Electricity Control Centre
NISM
2008-11-08
16:00
19:30
1100
2008-11-08
10:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 16:00 hrs to 19:30 hrs on Saturday 08/11/2008
There is insufficient System Margin System margin shortfall 1100 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 10:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 06:00 hrs on 08/11/2008
Issued by Mike Cousins National Grid Electricity Control Centre
NISM
2008-11-08
16:00
19:30
500
2008-11-08
12:50
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 16:00 hrs to 19:30 hrs on Saturday 08/11/2008
There is insufficient System Margin System margin shortfall 500 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 13:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 10:00 hrs on 08/11/2008
Issued by D. Coan National Grid Electricity Control Centre
NISM
2008-09-17
19:00
21:00
900
2008-09-17
16:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 21:00 hrs on Wednesday 17/09/08
There is insufficient System Margin System margin shortfall 900 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 16:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 11:51 hrs on 17/09/08
Issued by John Wise National Grid Electricity Control Centre
NISM
2008-09-17
19:00
21:00
400
2008-09-17
18:30
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 21:00 hrs on Wednesday 17/09/2008
There is insufficient System Margin System margin shortfall 400 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 18:30 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 16:00 hrs on 17/09/2008
Issued by Mike Cousins National Grid Electricity Control Centre
NISM
2008-09-17
19:00
21:00
400
2008-09-17
21:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 21:00 hrs on Wednesday 17/09/2008
There is insufficient System Margin System margin shortfall 400 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 00:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 18:30 hrs on 17/09/2008
Issued by Mike Cousins National Grid Electricity Control Centre
NISM
2008-09-14
19:00
22:00
1000
2008-09-14
04:05
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 22:00 hrs on Sunday 14/09/2008
There is insufficient System Margin System margin shortfall 1000 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 04:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 22:45 hrs on 13/09/2009
Issued by John Hughes National Grid Electricity Control Centre
NISM
2008-09-14
19:00
22:00
1000
2008-09-14
09:55
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 22:00 hrs on Sunday 14/09/2008
There is insufficient System Margin System margin shortfall 1000 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 10:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 04:05 hrs on 14/09/2008
Issued by John Hughes National Grid Electricity Control Centre
NISM
2008-09-14
19:00
22:00
400
2008-09-14
15:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 19:00 hrs to 22:00 hrs on Sunday 14/09/2008
There is insufficient System Margin System margin shortfall 400 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 15:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 09:55 hrs on 14/09/2008
Issued by Clive Coles National Grid Electricity Control Centre
NISM
2008-09-04
11:00
18:30
700
2008-09-04
12:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 11:00 hrs to 18:30 hrs on Thursday 04/09/2008
There is insufficient System Margin System margin shortfall 700 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 12:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 09:35 hrs on 04/09/2008
Issued by Clive Coles National Grid Electricity Control Centre
NISM
2008-09-04
11:00
20:30
400
2008-09-04
16:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 11:00 hrs to 20:30 hrs on Thursday 04/09/2008
There is insufficient System Margin System margin shortfall 400 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 16:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 12:00 hrs on 04/09/2008
Issued by Clive Coles National Grid Electricity Control Centre
NISM
2008-08-24
20:00
22:00
1000
2008-08-24
19:45
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 20:00 hrs to 22:00 hrs on Sunday 24/08/2008
There is insufficient System Margin System margin shortfall 1000 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 22:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 16:45 hrs on 24/08/2008
Issued by John Wise National Grid Electricity Control Centre
NISM
2008-06-09
08:30
13:00
600
2008-06-09
08:15
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 08:30 hrs to 13:00 hrs on Monday 09/06/08
There is insufficient System Margin System margin shortfall 600 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 09:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 05:00 hrs on 09/06/08
Issued by John Wise National Grid Electricity Control Centre
HRDR
2008-05-27
12:30
19:00
1200
2008-05-27
15:57
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF ISSUE OF GB TRANSMISSION SYSTEM WARNING:
High Risk of Demand Reduction
In accordance with OC7 of the Grid Code a GB Transmission System Warning 'High Risk of Demand Reduction' has been ISSUED for the period
from 12:30 hrs to 19:00 hrs on Tuesday 27/05/2008
There is insufficient System Margin. System margin shortfall 1200 MW
Trading Points, Control Points and Externally Interconnected System Operators are requested to
notify National Grid of any additional MW capacity.
Network operators have been requested to advise National Grid of any additional demand reduction available.
No further action is required until instruction is given by National Grid.
The situation will be reviewed again by National Grid at 15:00 hours and an update issued.
Notification Issued at 12:45 hrs on 27/05/2008
Issued by D Coan National Grid Electricity Control Centre
Note This warning may supersede a GB Transmission System Warning of Inadequate System Margin and will remain in force for the specified period until updated or cancelled by National Grid
DCI
2008-05-27
16:09
NULL
NULL
2008-05-27
18:15
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF ISSUE OF GB TRANSMISSION SYSTEM WARNING
DEMAND CONTROL IMMINENT
In accordance with OC7 of the Grid Code a GB Transmission System Warning 'Demand Control Imminent' has been issued by National Grid effective from 16:00 27/05/08
The situation will be reviewed again by National Grid at 17:45 hours and an update issued
Notification Issued at 16:09 hrs on 27/05/08
Issued by Lewis Gent National Grid Electricity Control Centre
HRDR
2008-05-27
15:00
19:00
1600
2008-05-27
16:09
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF ISSUE OF GB TRANSMISSION SYSTEM WARNING:
High Risk of Demand Reduction
In accordance with OC7 of the Grid Code a GB Transmission System Warning 'High Risk of Demand Reduction' has been ISSUED for the period
from 15:00 hrs to 19:00 hrs on Tuesday 27/05/08
There is insufficient System Margin. System margin shortfall 1600 MW
Trading Points, Control Points and Externally Interconnected System Operators are requested to
notify National Grid of any additional MW capacity.
Network operators have been requested to advise National Grid of any additional demand reduction available.
No further action is required until instruction is given by National Grid.
The situation will be reviewed again by National Grid at 19:00 hours and an update issued.
Notification Issued at 15:57 hrs on 27/05/08
Issued by David Coan National Grid Electricity Control Centre
Note This warning may supersede a GB Transmission System Warning of Inadequate System Margin and will remain in force for the specified period until updated or cancelled by National Grid
NISM
2008-03-12
17:00
20:00
1000
2008-03-12
18:00
From : Power System Manager - National Grid Electricity Control Centre
NOTIFICATION OF INADEQUATE SYSTEM MARGIN
For the period:
from 17:00 hrs to 20:00 hrs on Wednesday 12/03/2008
There is insufficient System Margin System margin shortfall 1000 MW
Maximum Generation Service may be instructed.
Trading Points, Control Points and Externally interconnected System Operators are requested to notify National Grid of any additional MW capacity.
Suppliers please advise National Grid of any additional Demand Control available
The situation will be reviewed again by National Grid at 20:00 hours and an
update issued.
This Notification of Issue of a GB Transmission System Warning - Inadequate System Margin Notification Issued at 15:45 hrs on 12/03/08
Issued by John Wise National Grid Electricity Control Centre
