National Electricity Transmission System Status Report nationalgridESO UNRESTRICTED National Electricity Transmission System Status Report Saturday 24 October 2020

Today’s High Level Risk Status Forecast for the next 24h

Time General Status Voltage

PSM Demand System Inertia

07:00 - 14:00 System Margins Duty 14:00 - 21:00 Generation Transmission Officer 21:00 - 07:00 Active Constraints

Today’s Minimum De-Rated Margin 10,106 (SP37) System Warnings None Generation 1260 MW Current BMU Largest Loss Risk Demand 560 MW (850 MW overnight) Last 24 1hours'6 BM11 spend16 21 26 31Total:36 £1795k41 46 51 56 61 66 71 76 81 86 91 96 £70k £60k £50k £40k £30k £20k £10k £0k -£10k -£20k -£30k

Yesterday’s Market Summary

Cash out price (Max) £77.80/MWh (SP39)

Cash Out Price (Min) £31.70/MWh (SP10)

Peak Demand Yesterday 38,342 MW

NETS Status Report; 24 October 2020 2 of 4 nationalgridESO UNRESTRICTED

Interconnectors Net Transfer Capacity (MWs) Today Import Export Netherlands (BritNed) 1100 1133 Fully available France (IFA) 2000 2000 Fully available. Belgium (Nemo) 1013 1013 Fully Available Ireland (EWIC) 500 530 Fully Available Northern Ireland (MOYLE) 395 500 Partially available.

Wind Power Forecast

16,000 Wind Power Forecast - Probabilistic View for Next 3 Days

20 % con fiden ce 40 % con fiden ce 60 % con fiden ce 80 % con fiden ce M ean Fo re cast 15,000

14,000

13,000

12,000

11,000

10,000

9,000

8,000

7,000

6,000

5,000

4,000

3,000

2,000

1,000

0

5:00 5:00 8:00 8:00 5:00 8:00

12:00 17:00 21:00 12:00 17:00 21:00 12:00 17:00 21:00

25-OCT-2020 24-OCT-2020 25-OCT-2020 Key:

Expected embedded generation (MWs) Embedded Generation Forecast

23-OCT-2020 24-OCT-2020 25-OCT-2020 05:00 08:00 12:00 17:00 21:00 00:00 05:00 08:00 12:00 17:00 21:00 00:00 05:00 08:00 12:00 17:00 21:00 Solar (MW) 0 4 1650 1030 0 0 0 11 1011 115 0 0 0 1132 4308 32 0 Wind (MW) 1390 1590 1706 1468 1265 1579 2507 3161 3195 2440 2081 2122 2249 2347 2939 2388 2285 STOR (MW) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total (MW) 1390 1594 3356 2498 1265 1579 2507 3172 4206 2555 2081 2122 2249 3479 7247 2420 2285

12,000

10,000

8,000

6,000

4,000 EmbeddedGeneration MW /

2,000

0

12:00 21:00 05:00 08:00 12:00 17:00 21:00 05:00 08:00 17:00 21:00 05:00 08:00 12:00 17:00

2020 2020 2020

24-OCT- 23-OCT- 25-OCT-

NETS Status Report; 24 October 2020 3 of 4 nationalgridESO UNRESTRICTED Weather Source Commentary Latest forecast Met Office Today: (Summary) SEPA A bright start in eastern England but in the northwest will move Natural Resources Wales across all areas by evening, heavy for some and accompanied by strong to winds. Northern and western areas turning brighter with heavy showers later. Mild.

Tonight: Rain in some south-eastern parts will clear. Showers, some heavy with hail and thunder, will continue to affect western and some southern coastal counties, only a few reaching the east.

General Weather Concerns Met Office Weather UK Weather Warnings: Warnings e.g. wind, rain, snow, flooding, SEPA No weather warnings are in force for the UK. GB Weather Warnings Natural Resources Wales

UK Warnings: 0 Flood Warnings and 1 issued for England.

0 Flood Warnings issued for Wales.

0 Flood Warnings issued for Scotland.

Contains public sector information licensed under the Open Government Licence v1.0

Further Information

BM Reports https://www.bmreports.com

System Balancing Reports https://www.nationalgrideso.com/balancing-data/system-balancing-reports

Forecast Volumes and Costs https://www.nationalgrideso.com/balancing-data/forecast-volumes-and-costs

NGESO Insights https://www.nationalgrideso.com/insights

NETS Status Report; 24 October 2020 4 of 4