Where We Are Procuring Flexibility

Summer Tender 2024

Table 1: HV Flexibility Needs

Flexibility Services to be provided by assets connected at or below 11kV.

The capacity requirements for Southgate and Crowle are ‘up to’. Dependent upon the outcome of the Spring tender, the requirement tendered may be less than this.

					When flexibility is required
Location	Zone (Substation)	Capacity Requirement (MW)	Year	Service Start Date	Months	Days	Hours	Utilisation ceiling price £/MWh
Market Weighton	Southgate 33/11kV	Up to 0.110	2024/25	01-Dec-24	Dec	Mon - Fri	17:00-20:00	£1,200
Market Weighton	Southgate 33/11kV	Up to 0.500	2025/26	01-Dec-25	Dec, Jan	Everyday	16:30-20:00	£1,200
Driffield	Kirkburn 66/11kV	0.300	2024/25	25-Nov-24	Nov-Jan (1)	Mon - Fri	14:30-18:00	£1,200
Driffield	Kirkburn 66/11kV	0.300	2025/26	24-Nov-25	Nov-Jan (2)	Mon - Fri	14:30-18:00	£1,200
Scunthorpe	Crowle 66/11kV	Up to 0.390	2024/25	01-Dec-24	Dec, Jan	Everyday	10:30-20:30	£141
Scunthorpe	Crowle 66/11kV	Up to 0.700	2025/26	01-Dec-25	Dec, Jan	Everyday	17:00-21:00	£248

Kirkburn 2024/25 service windows are Monday, 25th November 2024 – Friday, 20th December 2024, and Monday, 6th January 2024 – Friday, 31st January 2025 (inclusive)
Kirkburn 2025/26 service windows are Monday 24th November 2025 – Friday, 19th December 2025 and Monday, 5th January 2025 – Friday, 30th January 2026 (inclusive)

i.e. the two weeks around Christmas and New Year are excluded.

Table 2: Call for Expressions of Interest in Providing HV Flexibility Services

We are calling for expressions of interest in providing services at these locations, to be provided by assets connected at or below 11kV.

				When Flexibility is Required
Location	Zone (Substation)	Capacity Requirement (MW)	Year	Months	Days	Hours
Middlesborough	Faraday St	0.72	2027/28	Oct - Mar	everyday	10:30 - 20:30
Market Weighton	Holme upon Spalding	0.12	2025/26	Oct - Mar	everyday	10:30 - 20:30
Whitley Bay	Monkseaton	0.77	2026/27	Oct - Mar	everyday	10:30 - 20:30
Leeds	Moor Rd	0.76	2027/28	Oct - Mar	everyday	10:30 - 20:30
Ripon	Ripon	0.99	2028/29	Oct - Mar	everyday	10:30 - 20:30
Harrogate	Starbeck	0.92	2025/26	Oct - Mar	everyday	10:30 - 20:30

Table 3a and 3b: LV Flexibility Needs

Flexibility services to be provided by assets connected at or below 415V.

The capacity requirements are indicated in the table below and are the same in 2024/25 and in 2025/26.

Capacity requirements that are described as ‘up to’ are dependent upon the outcome of the Spring tender. The requirement tendered may be less than this and may be different in 20245/25 and in 2025/26.

Table 3a: Requirements and Pricing for LV Flexibility Services at Zones Specified in Table 3b

Year	Service Start Date	When Flexibility is Required			Utilisation Ceiling Price £/MWh
Year	Service Start Date	Months	Days	Hours	Utilisation Ceiling Price £/MWh
2024/25	01-Nov-24	November to February	Monday to Friday	16:00 - 20:00	£17
2025/26	01-Nov-25	November to February	Monday to Friday	16:00 - 20:00	£17

Table 3b: Where LV Flexibility Services are to be Provided

Location	Zone (Substation)	Capacity requirement (MW)
Beamish	Lime Street	up to	0.100
Bradford	Thornbury Avenue	up to	0.100
Chester Le Street	Chester Le Street	up to	0.100
Chester Le Street	Whitehall Park North	up to	0.100
Chester Le Street	Birtley Windsor		0.100
Cramlington	Barras		0.100
Doncaster	Hazel Road	up to	0.100
Doncaster	Westfield Park	up to	0.100
Doncaster	Yarborough Terrace	up to	0.100
Durham	Woodbine Road	up to	0.100
Gateshead	Makepeace Terrace		0.100
Gateshead	Wardley Hall	up to	0.100
Gateshead	Winlaton East	up to	0.100
Leeds	Bellbrooke Avenue 2744		0.100
Leeds	Cowper Terrace		0.100
Leeds	Hamilton Place 2757		0.100
Leeds	Maxwell Street 2938		0.100
Seahouses	Seahouses South		0.100
South Shields	Boldon Lane South	up to	0.100
South Shields	Marlborough Street	up to	0.100
Stanley	Pontop Pike		0.100
Stockton on Tees	Barwick Lane	up to	0.100
Sunderland	Barnes Park	up to	0.100
Sunderland	Boldon Drive	up to	0.100
Sunderland	Southend Road	up to	0.100
York	Garden Street	up to	0.100