Great Britain’s electricity grid, live: margin notices, frequency, interconnectors and a daily snapshot. Automated. Data: Elexon & NESO.
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NESO turned wind farms down by 100.4 GWh on Saturday 14 November, an average of 4.2 GW across the day. Seagreen alone: 22.0 GWh. It's the 8th day over 75 GWh in the past 30 days.
Net payments to the farms: £172k.
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GB grid at 18:00, Sat 14 Nov:
Demand 40.9 GW, price £183/MWh
Wind 13.7 GW (34%)
Gas 9.7 GW (24%), nuclear 5.1 GW (13%), other 2.6 GW (6%)
Net imports 6.9 GW
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GB grid at 17:55, Fri 13 Nov:
Demand 43.4 GW, price £273/MWh
Wind 7.8 GW (18%)
Gas 16.6 GW (38%), nuclear 5.1 GW (12%), biomass 3.1 GW (7%)
Net imports 6.5 GW
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Grid emergency: NESO has issued an Emergency Instruction to COALB-1/2/3/4/5 at 13:37. That's the 4th Emergency Instruction from NESO in the past 12 months.
Emergency Instructions are orders NESO can give outside the normal market to keep the system secure.
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NESO turned wind farms down by 81.8 GWh on Thursday 12 November, an average of 3.4 GW across the day. Moray East alone: 19.8 GWh. It's the 9th day over 75 GWh in the past 30 days.
Farms on fixed-price contracts pay to turn down, so on balance the farms paid NESO £160k.
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GB grid at 17:55, Thu 12 Nov:
Demand 43.3 GW, price £212/MWh
Wind 15.1 GW (34%)
Gas 11.1 GW (25%), nuclear 5.1 GW (12%), biomass 3.0 GW (7%)
Net imports 5.3 GW
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GB grid at 17:55, Wed 11 Nov:
Demand 41.6 GW, price £249/MWh
Wind 5.8 GW (14%)
Gas 19.6 GW (46%), nuclear 5.1 GW (12%), other 4.0 GW (9%)
Net imports 2.1 GW
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Balancing Britain's grid cost £19.5m on Monday 9 November. It's the 50th day over £15m since April.
NESO publishes these figures about five days late.
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GB grid at 17:55, Tue 10 Nov:
Demand 42.5 GW, price £248/MWh
Wind 5.4 GW (13%)
Gas 22.5 GW (52%), nuclear 5.1 GW (12%), other 3.7 GW (9%)
Net imports 0.4 GW
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Gas peakers are running hard: open-cycle gas turbines are generating 565 MW at 07:40, the most today.
These quick-start plants come on when the grid is tight.
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GB grid at 17:55, Mon 9 Nov:
Demand 42.2 GW, price £498/MWh
Wind 1.6 GW (4%)
Gas 23.9 GW (56%), nuclear 5.1 GW (12%), other 3.4 GW (8%)
Net imports 2.0 GW
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Electricity Margin Notice: NESO has issued an EMN for 06:00–11:00 tomorrow (Mon 9 Nov), with a margin shortfall of 1,388 MW, the 7th EMN in the past 12 months.
An EMN asks generators and suppliers for more spare capacity. It doesn't mean power cuts are likely.
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Gas peakers are running hard: open-cycle gas turbines are generating 509 MW at 08:15, the most today.
These quick-start plants come on when the grid is tight.
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Balancing Britain's grid cost £20.1m on Friday 30 October. Almost all of it was constraints, mostly paying generators to turn down where the network was full. It's the 49th day over £15m since April.
NESO publishes these figures about five days late.
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GB grid at 17:55, Sun 8 Nov:
Demand 38.7 GW, price £262/MWh
Wind 1.0 GW (3%)
Gas 22.7 GW (58%), nuclear 5.1 GW (13%), other 3.1 GW (8%)
Net imports 2.0 GW
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