EDF / 2020 Universal Registration Document

1 THE GROUP, ITS STRATEGY AND ACTIVITIES Description of the Group’s activities

CAPACITY AND OUTPUT BY POWER PLANT

Output (2) (in TWh)

Power Plant

Power (1) (in MW)

2020

AGR Power Plants

2019

Dungeness B Hartlepool Heysham 1 Heysham 2 Hinkley Point B Hunterston B

1,090 1,185 1,060 1,240

(0.2)

(0.2)

8.5 6.1 8.9 1.8 2.3 9.9

7.6 6.8

10.3

965 985

6.9 1.0

Torness

1,200

10.1

PWR Power Plant Sizewell B

1,198 8,923

8.4

8.5

TOTAL

45.7 58%

51.0 65%

LOAD FACTOR (3)

Capacities are stated net of all power consumed for the power stations’ own use, including power imported from the grid. (1) Output in each year reflects any refuelling, planned and unplanned outages. (2) Load factors are obtained by dividing the actual output by the output that would have been achieved by each power plant operated at its stated capacity (3) appropriate for the period.

Operational review of the existing nuclear generation fleet The nuclear generation fleet produced 45.7TWh during 2020, 5.3TWh less than 2019 (51.0TWh). The reduction in output is largely due to: the extended outages at Hinkley Point B for graphite inspections and safety case work, a 50% reduction in output from Sizewell B, between May and September, at the request of National Grid, due to significantly lower than normal summer demand. These reductions are partly offset by fewer statutory outages in 2020. Planned statutory outages were carried out on Heysham 2 Reactor 8 and Heysham 1 Reactor 1. Planned statutory outages on Torness Reactor 1 and Hunterston B Reactor 4 were deferred to 2021 due to the Covid-19 pandemic. A statutory outage was started on Dungeness B Reactor 22 in Q3 2018 with an associated outage on Reactor 21 for work on common systems. These outages were extended to address corrosion on cooling water pipework and the discovery of steam

pipework cracking and the units were expected to return to service in May/April 2020. Since then further safety case challenges have arisen in relation to flooding in the event of a boiler tube failure and in relation to a reactor pressure vessel component called the gas baffle. In recognition of the complexity which these cases present, the expected return to service has been put back to H1 2021. Following extended outages for graphite core inspections and related safety case work, both units at Hunterston B returned to service during H2 2020. The intention is to run each reactor for two six months periods of operation, subject to a graphite inspection and further regulatory approval between each run. The decision has also been taken in 2020 to end power generation at Hunterston B no later than 7 January 2022. Both reactors at Hinkley Point B are currently shut down while safety case work related to the graphite core continues. The expected return to service dates are H1 2021. The decision has been taken in 2020 to end power generation at Hinkley Point B no later than 15 July 2022.

CURRENT OPERATING LIVES* AND CLOSURE DATES

Power Station Lifetime (Formally Declared)

Life Extensions (Already Formally Declared)

Associated Scheduled Closure Date

Scheduled Periodic Safety Reviews

Power Plant

Type of reactor Start of Generation

Hinkley Point B Hunterston B Dungeness B

AGR AGR AGR AGR AGR AGR AGR PWR

Feb. 1976 Feb. 1976 Apr. 1983 Jul. 1983 Aug. 1983 May 1988 Jul. 1988 Feb. 1995

46 years 46 years 45 years 41 years 41 years 42 years 42 years 40 years

21 years 21 years 20 years 15 years 15 years 17 years 17 years

2022 2022 2028 2024 2024 2030 2030 2035

2017 2017 2018 2019 2019 2020 2020 2025

Heysham 1 Hartlepool

Torness

Heysham 2 Sizewell B

-

As formally recorded by EDF Energy and approved by the NDA. *

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EDF - UNIVERSAL REGISTRATION DOCUMENT 2020

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