Sizewell C Power Station - Written Answers

Written Question

Sizewell C Power Station: Investment

Monday 25th September 2023

Asked by: Lord Taylor of Warwick (Non-affiliated - Life peer)

Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what steps they are taking to ensure that prospective investors in the proposed Sizewell C nuclear power plant undergo strict national security checks.

Answered by Lord Callanan - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

The Government is clear that, whilst we welcome investment in sectors including civil nuclear, this can never be at the expense of national security.

As set out in the Written Ministerial Statement of 18^th September, should any investor’s shareholding in the Sizewell C project reach the relevant statutory thresholds, the investor will be required to pass through the process set out in the National Security and Investment Act 2021, allowing scrutiny of any risks posed with respect to this legislation.

In addition, as a condition of the Secretary of State’s designation of Sizewell C Limited in accordance with section 2(1) of the Nuclear Energy (Financing) Act 2022, the Secretary of State must have the ability to take a special share in the company. The rights attached to the special share are subject to approval by the Secretary of State but will likely be limited to protecting national security interests with respect to the project and complementary to the provisions of the National Security and Investment Act 2021, alongside other, related matters.

Written Question

Sizewell C Power Station: Construction

Tuesday 19th September 2023

Asked by: Caroline Lucas (Green Party - Brighton, Pavilion)

Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, pursuant to the Answer of 7 September 2023 to Question 195847 on Sizewell C Power Station: Construction, what the expected value was of the Government’s shareholding in Sizewell C in the 2022-23 financial year.

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

The expected value of the Government’s shareholding in Sizewell C in financial year 2022-2023 (as at 31 March 2023) was a total of £363mn, made up of £11.5mn of ordinary shares and £351.8mn of shareholder loans.

Written Question

Sizewell C Power Station: Construction

Thursday 7th September 2023

Asked by: Caroline Lucas (Green Party - Brighton, Pavilion)

Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, if she will publish (a) all sources of Government funding used for the development of Sizewell C nuclear power station, (b) the total expenditure from each funding stream and (c) a breakdown of (i) current and (ii) projected expenditure for each financial year since the start of the project; and if she will make a statement.

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

The Government’s investment in Sizewell C has been funded from the Department's capital budgets agreed at the Autumn Statement 2022. As a shareholder in Sizewell C, the Government announced an investment of £679 million in November 2022 and made available further amounts of £170 million and £341 million this year to continue driving forward the project’s development, towards the aim of making a final investment decision on a large-scale nuclear project this Parliament. This investment came on top of £100 million invested by EDF in Sizewell C in January 2022 which was provided by the Government through the Combined Option Agreement, this used departmental budgets in the financial year 2021/2022. Further details are commercially sensitive, and it would not be appropriate to disclose more at this time.

Written Question

Sizewell C Power Station: Construction

Thursday 7th September 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, how much funding the Government has provided for the development of Sizewell C nuclear power station, broken down by (a) funding stream and (b) government department.

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

As a shareholder in Sizewell C, the Government announced an investment of £679 million in November 2022 and made available further amounts of £170 million and £341 million this year to continue driving forward the project’s development, towards the aim of making a final investment decision on a large-scale nuclear project this Parliament. The Government’s investment in Sizewell C has been funded from the Department's capital budgets agreed at the Autumn Statement 2022. This investment came on top of £100 million invested by EDF in Sizewell C in January 2022 which was provided by the Government through the Combined Option Agreement, this used departmental budgets in the financial year 2021/2022.

Written Question

Heysham 2 Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, how many (a) outages and (b) other periods of unavailability of electricity generation there have been per reactor, in days, at Heysham 2 power station in each year since 2010.

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

Nuclear power continues to be an important and proven source of reliable, clean energy, and as a result of this strong baseload provision, we have been able to move faster on a number of our key net zero objectives.

A proportion of the nuclear generating capacity is likely to be unavailable at any given point due to routine inspections, maintenance, energy systems management and technical issues. A certain level of outage is to be expected and demonstrative of a very well regulated and safe technology.

In 2021, nuclear power stations generated 46 TWh of electricity which was 15% of the electricity generated in the UK. The UK’s Advanced Gas Cooled Reactor Fleet is ageing and has performed beyond original expectations providing extra years of generation.

In addition to the AGR fleet, Sizewell B will continue operating until at least 2035 and we have set out our ambition for a new generation of nuclear power stations, providing up to 24GW of electricity by 2050. The new reactor designs are very efficient. This includes new large-scale nuclear power stations like Hinkley Point C which alone will provide 3.2GW for around 60 years, and the next generation of small and advanced reactors are expected to be more efficient.

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

Written Question

Hartlepool Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

Written Question

Dungeness B Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

Written Question

Hinkley Point B Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

Written Question

Hunterston B Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

Written Question

Torness Power Station: Power Failures

Friday 14th July 2023

Asked by: Alan Brown (Scottish National Party - Kilmarnock and Loudoun)

Question to the Department for Energy Security & Net Zero:

Answered by Andrew Bowie - Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)

2010 – 2023 (June): Annual number of outages and non-operational days at UK nuclear power stations

	Dungeness B R21		Dungeness B R22		Hartlepool R1		Hartlepool R2		Heysham 1 R1		Heysham 1 R2		Heysham 2 R7		Heysham 2 R8
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	0	230	4	101	3	49	3	86	2	152	3	119	1	5	1	251
2011	4	260	3	249	6	129	2	50	2	22	4	24	2	82	3	32
2012	5	172	2	181	3	47	2	37	4	71	5	133	4	63	0	0
2013	5	102	8	182	4	48	4	133	2	141	7	50	1	28	2	74
2014	9	179	6	106	3	122	4	144	3	246	3	138	0	0	1	1
2015	4	44	3	129	2	79	4	79	3	77	2	136	2	70	0	0
2016	4	41	7	57	5	132	3	79	2	46	3	47	0	0	1	65
2017	6	153	5	92	2	26	4	29	2	98	3	75	3	9	0	0
2018	4	127	3	140	2	109	3	29	3	31	1	71	3	89	1	4
2019	0	365	0	365	6	41	3	117	2	39	5	86	0	0	2	5
2020	0	366	0	366	2	29	3	62	3	130	3	71	1	9	2	82
2021	0	365	0	365	2	114	3	135	4	129	6	95	3	193	5	65
2022	N/A	N/A	N/A	N/A	2	82	2	53	2	57	2	122	5	109	3	63
2023	N/A	N/A	N/A	N/A	2	20	2	20	1	14	1	24	2	22	2	96

	Hinkley Point B R3		Hinkley Point B R4		Hunterston B R3		Hunterston B R4		Torness R1		Torness R2		Sizewell B R1
	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational	Outages	Days non operational
2010	2	54	4	44	2	14	2	15	1	36	5	143	1	196
2011	2	36	3	90	3	42	4	19	2	64	4	13	2	53
2012	4	86	3	20	1	60	2	88	0	0	0	0	4	83
2013	1	9	1	23	0	0	4	17	1	48	1	12	1	47
2014	1	33	0	0	3	25	3	18	3	109	3	79	1	46
2015	1	6	1	85	3	69	2	86	1	4	0	0	0	0
2016	4	77	1	6	3	27	1	1	1	16	1	4	1	62
2017	3	28	3	51	2	27	1	2	1	65	1	63	1	58
2018	2	18	1	64	3	301	5	86	1	90	2	4	0	30
2019	2	96	1	3	0	365	0	0	1	257	0	0	1	65
2020	2	248	1	314	0	243	1	6	0	271	0	0	1	2
2021	2	147	1	130	2	64	4	72	2	71	4	142	1	127
2022	3	19	1	11	N/A	N/A	0	0	4	81	3	115	1	4
2023	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	2	40	3	32	1	91

Notes on Table

Days non-operational represents days where a reactor did not generate at all during a day.
If output in a day is greater than 0, then the day is counted as an operational day.
Outages represent the number of occurrences where a reactor was non-operational.
2023 is until June 2023 only.
Dungeness moved into its defueling phase in June 2021, having been in an extended outage since September 2018
N/A means not available due to no longer generating and transitioning to defueling as planned.

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