The National Grid (Bramford to Twinstead Reinforcement) Order 2024

SCHEDULE 1 AUTHORISED DEVELOPMENT

Article 2 A nationally significant infrastructure project as defined in sections 14 and 16 of the 2008 Act and associated development within the meaning of section 115(2) of the 2008 Act, comprising— TRANSMISSION ELECTRIC LINE In the Districts of Mid-Suffolk and Babergh Work No. 1 — Bramford Substation line entries and Route 4YL Works as shown on Sheets 1, 2, 3, 6 and 8 of the work plans to modify and reconfigure the existing overhead transmission electric line (Route 4YL) from and within Bramford Substation to existing pylon 4YL019 (including transpositions to the north and south of Hintlesham Woods), including— (a) the dismantling and removal of all existing overhead transmission electric line and pylons including foundations between the existing Bramford Substation gantries and a point indicated as 4YL004A on Sheet 1 of the work plans (and including the existing pylon 4YL004); (b) the dismantling and removal of all existing overhead transmission electric line and pylons including foundations between a point indicated as 4YL012A on Sheet 3 of the work plans and a point indicated as RB11 on Sheet 3 of the work plans (and including the existing pylon 4YL012); (c) the dismantling and removal of all existing overhead transmission electric line and pylons including foundations between a point indicated as 4YL018A on Sheet 8 of the work plans and a point indicated as RB16 on Sheet 8 of the work plans (and including the existing pylon 4YL018); (d) the realignment of the existing Bramford Substation gantries; (e) the foundations and steelwork to construct new pylons; (f) the installation of 0.5 kilometres of overhead transmission electric line between the realigned Bramford Substation gantries and a point indicated as new pylon 4YL004A on Sheet 1 of the work plans; (g) the installation of 2.6 kilometres of overhead transmission electric line between a point indicated as 4YL012A on Sheet 3 of the work plans and a point indicated as 4YL018A on Sheet 8 of the work plans; (h) the installation of conductors, busbars, switchgear and fittings, including downleads and downdroppers at each realigned gantry, to facilitate connection from the equipment within the gas insulated switchgear building situated within Bramford Substation to a point indicated as new pylon 4YL003C on Sheet 1 of the work plans; (i) the installation of fibre optic earthwire conductors, with optical fibres terminated in a joint box at a point indicated as new pylon 4YL003C on Sheet 1 of the work plans; (j) the temporary diversion of the existing overhead transmission electric line to facilitate the works; and (k) modifications to the existing overhead transmission electric line between a point indicated as 4YL004A on Sheet 1 of the work plans and a point indicated as 4YL007 on Sheet 2 of the work plans, between a point indicated as 4YL011 on Sheet 3 of the work plans and a point indicated as 4YL012A on Sheet 3 of the work plans and between a point indicated as 4YL018A on Sheet 8 of the work plans and a point indicated as 4YL019 on Sheet 8 of the work plans. Work No. 2 — overhead transmission electric lines from Bramford Substation to the Dedham Vale East Cable Sealing End Compound Works as shown on Sheets 1, 2, 3, 6 and 8 to 12 (inclusive) of the work plans to construct and install a new overhead transmission electric line from and within Bramford Substation to the two sealing end compound gantries at the Dedham Vale East Cable Sealing End Compound and to modify and reconfigure the existing overhead transmission electric line (Route 4YL), including— (a) the installation of two new gantries within Bramford Substation; (b) the foundations and steelwork to construct new pylons; (c) the installation of 3.6 kilometres of overhead transmission electric line between the two new Bramford Substation gantries and a point indicated as RB11 on Sheet 3 of the work plans; (d) the installation of 6.6 kilometres of overhead transmission electric line between a point indicated as RB16 on Sheet 8 of the Work Plans and the two sealing end compound gantries at the Dedham Vale East Cable Sealing End Compound; (e) the installation of conductors, busbars, shunt reactors, switchgear and fittings, including downleads and downdroppers at each new gantry, to facilitate connection to the equipment within the gas insulated switchgear building situated within Bramford Substation; (f) the installation of conductors, insulators and fittings, including downleads and downdroppers at each gantry to facilitate connection to the equipment within the Dedham Vale East Cable Sealing End Compound; (g) the installation of fibre optic earthwire conductors, with optical fibres terminated in joint boxes; (h) the temporary diversion of the existing overhead transmission electric line to facilitate the works; and (i) modifications to the existing overhead transmission electric line between a point indicated as RB11 on Sheet 3 of the work plans and a point indicated as RB16 on Sheet 8 of the work plans. In the District of Babergh Work No. 3 — underground transmission electric line from the Dedham Vale East Cable Sealing End Compound to the Dedham Vale West Cable Sealing End Compound Works as shown on Sheets 12 to 15 (inclusive) of the work plans to construct and install a new underground transmission electric line (5.5 kilometres in length) in the section of the works between and including the Dedham Vale East Cable Sealing End Compound and the Dedham Vale West Cable Sealing End Compound, including— (a) the installation of 5.5 kilometres of underground transmission electric line, including cable ducts, joint bays, link pillars, fibre optic earthwire conductors and earthing and protection and control systems, to facilitate a connection between the Dedham Vale East Cable Sealing End Compound and the Dedham Vale West Cable Sealing End Compound; (b) Dedham Vale East Sealing End Compound sealing end equipment including switchgear and connection to overhead transmission electric line conductors including gantries; (c) Dedham Vale West Sealing End Compound sealing end equipment including switchgear and connection to overhead transmission electric line conductors including gantries; (d) Dedham Vale East Cable Sealing End Compound permanent compound, security fencing and gates, within which is situated the sealing end equipment, earthing and protection and control systems, portable relay room, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes; (e) Dedham Vale West Cable Sealing End Compound permanent compound, security fencing and gates, within which is situated the sealing end equipment, earthing and protection and control systems, portable relay room, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes; (f) permanent vehicular access road(s), hardstanding, drainage (including attenuation ponds), and site services, including power supply, for each of the Dedham Vale East Sealing End Compound and the Dedham Vale West Sealing End Compound; and (g) landscaping, including mitigation planting at each of the Dedham Vale East Sealing End Compound and the Dedham Vale West Sealing End Compound. Work No. 4 — overhead transmission electric line from Dedham Vale West Cable Sealing End Compound to the Stour Valley East Cable Sealing End Compound Works as shown on Sheets 15, 16, 17 and 19 of the work plans to construct and install a new overhead transmission electric line between the two sealing end compound gantries at the Dedham Vale West Cable Sealing End Compound and the two sealing end compound gantries at the Stour Valley East Cable Sealing End Compound, including— (a) the foundations and steelwork to construct new pylons; (b) the installation of 5.3 kilometres of overhead transmission electric line between the two sealing end compound gantries at the Dedham Vale West Cable Sealing End Compound and the two sealing end compound gantries at the Stour Valley East Cable Sealing End Compound; (c) the installation of conductors, insulators and fittings, including downleads and downdroppers at each gantry to facilitate connection to the equipment within the Dedham Vale West Cable Sealing End Compound and the Stour Valley East Cable Sealing End Compound; and (d) the installation of fibre optic earthwire conductors, with optical fibres terminated in joint boxes. In the Districts of Babergh and Braintree Work No. 5 — underground transmission electric line from the Stour Valley East Cable Sealing End Compound to the Stour Valley West Cable Sealing End Compound Works as shown on Sheets 19, 20, 21, 27 and 28 of the work plans to construct and install a new underground transmission electric line (5.1 kilometres in length) in the section of the works between and including the Stour Valley East Cable Sealing End Compound and the Stour Valley West Cable Sealing End Compound, including— (a) the installation of 5.1 kilometres of underground transmission electric line, including cable ducts, joint bays, link pillars, fibre optic earthwire conductors and earthing and protection and control systems, to facilitate a connection between the Stour Valley East Cable Sealing End Compound and the Stour Valley West Cable Sealing End Compound; (b) Stour Valley East Cable Sealing End Compound sealing end equipment including switchgear and connection to overhead transmission electric line conductors including gantries; (c) Stour Valley West Cable Sealing End Compound sealing end equipment including switchgear and connection to overhead transmission electric line conductors including gantries; (d) Stour Valley East Cable Sealing End Compound permanent compound, security fencing and gates, within which is situated the sealing end equipment, earthing and protection and control systems, portable relay room, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes; (e) Stour Valley West Cable Sealing End Compound permanent compound, security fencing and gates, within which is situated the sealing end equipment, earthing and protection and control systems, portable relay room, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes; (f) permanent vehicular access road(s), hardstanding, drainage (including attenuation ponds), and site services, including power supply, for each of the Stour Valley East Cable Sealing End Compound and the Stour Valley West Cable Sealing End Compound; and (g) landscaping, including mitigation planting at each of the Stour Valley East Cable Sealing End Compound and the Stour Valley West Cable Sealing End Compound. In the District of Braintree Work No. 6 — overhead transmission electric line from the Stour Valley West Cable Sealing End Compound to the existing 4YLA overhead transmission electric line (Route 4YLA) southwest of Alphamstone Works as shown on Sheets 27 and 28 of the work plans to realign the existing overhead transmission electric line (Route 4YLA) between the two sealing end compound gantries at the Stour Valley West Cable Sealing End Compound and a point indicated as 4YLA007 (Route 4YLA), including— (a) the modification of existing pylon 4YLA007; (b) the foundations and steelwork to construct new pylon 4YLA006C; (c) the installation of 0.6 kilometres of overhead transmission electric line between the two sealing end compound gantries at the Stour Valley West Cable Sealing End Compound and a point indicated as 4YLA007 on Sheet 28 of the Work Plans; (d) the installation of conductors, insulators and fittings, including downleads and downdroppers at each gantry to facilitate connection to the equipment within the Stour Valley West Cable Sealing End Compound; and (e) the installation of fibre optic earthwire conductors, with optical fibres terminated in joint boxes. Work No. 7 — removal of existing overhead transmission electric line (Route 4YLA) between the Twinstead Tee and a point to the southwest of Alphamstone Works as shown on Sheets 21, 27 and 28 of the work plans to allow the removal of 2.5 kilometres of the existing overhead transmission electric line (Route 4YLA) between the Twinstead Tee at a point indicated as 4YL073 and a point to the southwest of Alphamstone indicated as 4YLA007, including— (a) the modification of existing pylon 4YL073; (b) the dismantling and removal of all overhead transmission electric line and pylons including foundations between Twinstead Tee commencing at a point indicated as 4YL073 on Sheet 21 of the work plans (but not including pylon 4YL073) and terminating at a point to the southwest of Alphamstone indicated as 4YLA007 on Sheet 28 of the work plans (but not including pylon 4YLA007); and (c) the dismantling and removal of conductors, insulators and fittings. DISTRIBUTION ELECTRIC LINE In the Districts of Mid-Suffolk, Babergh and Braintree Work No. 8 — removal of existing overhead distribution electric line (Route PCB) between Burstall Bridge and the Twinstead Tee Works as shown on Sheets 4, 5, 7 to 17 (inclusive), 19, 20, 21 and 22 of the work plans to allow the removal of 25 kilometres of the existing overhead distribution electric line (Route PCB) between Burstall Bridge at a point indicated as PCB5 and a point to the west of Twinstead Tee indicated as PCB89, including— (a) the modification of existing pylons PCB5 and PCB89; (b) the dismantling and removal of all overhead distribution electric line and pylons including foundations between Burstall Bridge commencing at a point indicated as PCB5 on Sheet 4 of the work plans (but not including pylon PCB5) and terminating at a point to the west of Twinstead Tee indicated as PCB89 on Sheet 22 of the work plans (but not including pylon PCB89); and (c) the dismantling and removal of conductors, insulators and fittings. GRID SUPPLY POINT SUBSTATION In the District of Braintree Work No. 9 — Grid Supply Point Substation to the east of Wickham St. Paul Works as shown on Sheet 23 of the work plans to construct the Grid Supply Point Substation between Butler’s Wood and Waldegrave Wood, to the east of Wickham St. Paul, including— (a) the construction of foundations to support all new structures and equipment; (b) the installation of two Super Grid Transformers (SGTs); (c) the installation of support structures; (d) the construction of gantries for the termination of overhead electric line connections into the Grid Supply Point Substation; (e) the installation of equipment between gantries and switchgear; (f) the installation of switchgear and equipment; (g) the installation of electrical control panels; (h) the installation of a diesel generator; (i) the installation of troughs and below ground services; (j) the installation of new relay rooms, battery rooms, storage rooms and other welfare facilities; (k) the installation of electric vehicle charging points; (l) the installation of telecommunications equipment; (m) the installation of above ground water tanks; (n) drainage works; (o) the installation of other site furniture; (p) the erection of a security fence around the perimeter of the Grid Supply Point Substation; (q) the construction of site access roads, hardstanding, car parking and roadways; (r) utility service connections for electricity, communications and potable water and/or connection of power supply made from temporary generators; (s) utility service connection or on site storage for later disposal of grey water and sanitation; (t) earthworks including to create platforms for the new Grid Supply Point Substation equipment, structures, landscaping, roads and compounds; and (u) landscaping, including mitigation planting. Work No. 10 — modifications to the transmission electric line and connection to the Grid Supply Point Substation Works as shown on Sheet 23 of the work plans to reconfigure the existing overhead transmission electric line (Route 4YL) adjacent to the Grid Supply Point Substation and to construct a single circuit cable sealing end compound to the southwest of the Grid Supply Point Substation, including— (a) the modification of existing pylon 4YL080, including the installation of downleads to the Grid Supply Point Substation; (b) the temporary diversion of 0.7 kilometres of the existing overhead transmission electric line (Route 4YL) to facilitate the dismantling and removal of existing pylon 4YL081 and the installation of new pylon 4YL081A; (c) the dismantling and removal of existing pylon 4YL081 including foundations; (d) the installation of new pylon 4YL081A including foundations, steelwork and associated conductors, downdroppers and downleads, insulators and fittings; (e) single circuit cable sealing end equipment including switchgear and connection to overhead electric line conductors including gantries; (f) a permanent single circuit cable sealing end compound, within which is situated the sealing end equipment, earthing and protection and control systems, supervisory control and data acquisition communication, switchgear, connection to overhead electric line including fibre optic cable to joint boxes, gantries, transformers, cables, surface troughs, fibre optic cable and joint boxes; (g) the installation of a new underground transmission electric line to facilitate a connection between the single circuit cable sealing end compound and the Grid Supply Point Substation; (h) the installation of telecommunications equipment; (i) the installation of other site furniture; (j) the erection of a security fence around the perimeter of the single circuit cable sealing end compound; and (k) the construction of site access roads, hardstanding, and drainage. Work No. 11 — modifications to the distribution electric line and connection to the Grid Supply Point Substation Works as shown on Sheets 23, 25 and 26 of the work plans to modify the existing overhead distribution electric line (Route PCB) between a point indicated as PCB97 and a point indicated as PCB103 and to construct and install a new underground distribution electric line between the Grid Supply Point Substation and the existing overhead distribution electric line (Route PCB), including— (a) the dismantling and removal of existing pylon PCB98 including foundations; (b) the temporary diversion of the existing overhead distribution electric line (Route PCB) to facilitate the dismantling and removal of existing pylon PCB98; (c) the installation of a new cable sealing end platform pylon PCB98A including foundations, steelwork and associated conductors, downleads, insulators and fittings; (d) the installation of 1.1 kilometres of new underground distribution electric line, including cable ducts, joint bays, link pillars, fibre optic earthwire conductors and earthing and protection and control systems, to facilitate a connection between the Grid Supply Point Substation (Work No. 9) and the new cable sealing end platform pylon PCB98A (at a point indicated as PCB98A on Sheet 23 of the work plans); and (e) modifications to the existing overhead distribution electric line between a point indicated as PCB97 on Sheet 23 of the work plans and a point indicated as PCB103 on Sheet 26 of the work plans. CONSTRUCTION, MAINTENANCE AND USE In the Districts of Mid-Suffolk, Babergh and Braintree Work No. 12 — Temporary Site Compounds Works to construct temporary site compounds as part of the authorised development and in each case including— (a) earthworks, soil stripping and storage, ground improvement; (b) car parking, hard standing, roadways and access roads (including construction site services and temporary bridges); (c) drainage works (including attenuation ponds); (d) offices and staff welfare facilities; (e) utility service connections for electricity, communications and potable water and/or connection of power supply made from temporary generators; (f) utility service connection or on site storage for later disposal of grey water and sanitation; (g) emergency electrical generator; (h) materials, tools and fuel storage and laydown areas; (i) assembly areas; (j) plant and equipment storage areas; (k) wheel cleaning facilities; (l) security cabin and fencing and gates; (m) construction and security lighting; and (n) construction waste management facilities. ASSOCIATED DEVELOPMENT Such associated development not listed above, within the Order limits, as may be necessary or expedient for the purposes of or in connection with the construction or maintenance of the above Work Nos. or any of them, including— (a) ramps, means of access, footpaths, bridleways, trackways and pontoons; (b) embankment, bridge, aprons, abutments, foundations, retaining walls, drainage, wing walls, fencing and culverts; (c) works to alter the position of apparatus, including mains, sewers, drains, conductors and cables; (d) works to alter the position of UKPN apparatus, including construction and installation, decommissioning and partial removal and alteration of conductors and cables; (e) works to alter the course of, or otherwise interfere with a watercourse, drainage works, attenuation ponds, and temporary culverts; (f) landscaping and other works to mitigate any adverse effects of the construction, maintenance, operation or use of the authorised development, together with means of access; (g) tree and hedgerow planting and maintenance works; (h) works for the benefit or protection of the environment; (i) works for the benefit or protection of land, structures, apparatus or equipment affected by the authorised development (including arcing horns, earthing and works for monitoring); (j) works required for the strengthening, improvement, maintenance, or reconstruction of any streets; (k) works to streets and any alteration, removal or installation of road furniture, including where required to facilitate the construction of temporary accesses; (l) site preparation works, site clearance (including fencing, vegetation removal, demolition of existing buildings or structures and the creation of alternative footpaths), earthworks (including soil stripping and storage, site levelling, ground improvement); (m) establishment of site construction compounds, temporary laydown and storage areas, temporary offices, temporary vehicle parking, construction fencing, perimeter enclosure, security fencing, construction related buildings, welfare facilities, construction and security lighting and haulage roads; (n) establishment of launch pits and/or receiving pits to facilitate the use of horizontal directional drilling techniques to install any underground electric line; (o) wheel cleaning facilities; (p) supervisory control and data acquisition communication equipment; (q) installation of wires, cables, ducts, pipes and conductors, establishment of winching points and the installation of scaffolding; and (r) such other works, including scaffolding, working sites storage areas, and works of demolition (which includes but is not limited to demolition of residential properties), as may be necessary or expedient for the purposes of or in connection with the construction of the authorised development and which do not give rise to any materially new or materially different environmental effects from those assessed in the environmental statement.