Network reference ID of the substation associated with this site.

Network reference ID of the 'parent' (higher voltage level) substation associated with this site.

Substation Site Name

Substation Network Reference

Type of asset

Grid co-ordinates (Latitude)

Grid co-ordinates (Longitude)

Fault level headroom of Super Grid Point (from National Grid via Statement of Works Appendix G)

Name of the Grid Supply Point the substation ultimately connects to.

Name of the bulk supply substation which transforms voltage from 132kV (or 66kV at Feckenham) to 66kV, 33kV or 11kV. If no Primary substation is listed, this is the substation in question.

Name of the Primary substation which transforms voltage between the Bulk Supply Point and 11kV or 6.6kV distribution substations.

Highest voltage level at the substation

Lowest voltage level at the substation

Firm demand capacity of the substation

Reverse power capability of substation taken as 50% of the substation emergency rating.

Measured substation peak demand in the previous financial year

Fault rating of HV switchgear for 3ph faults (make)

Fault rating of HV switchgear for 3ph faults break)

Fault level at HV side of the substation for 3ph faults (make)

Fault level at HV side of the substation for 3ph faults (break)

Fault rating of LV switchgear for 3ph faults (make)

Fault rating of LV switchgear for 3ph faults break)

Fault level at LV side of the substation for 3ph faults (make)

Fault level at LV side of the substation for 3ph faults (break)

Fault rating of HV switchgear for 1ph faults (make)

Fault rating of HV switchgear for 1ph faults break)

Fault level at HV side of the substation for 1ph faults (make)

Fault level at HV side of the substation for 1ph faults (break)

Fault rating of LV switchgear for 1ph faults (make)

Fault rating of LV switchgear for 1ph faults break)

Fault level at LV side of the substation for 1ph faults (make)

Fault level at LV side of the substation for 1ph faults (break)

Demand Headroom is calculated from substation firm capacity minus peak demand

Generation headroom is calculated from substation reverse power capacity minus total inferred generation

Fault Level Headroom is calculated from the HV or LV switchgear with the highest 3ph or 1ph short-circuit duty

Demand connection potential indicator of substation. Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Generation connection potential indicator of substation. Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Fault level issue indicator of substation. Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Demand connection potential indicator of substation (taking parent substation in to account). Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Generation connection potential indicator of substation (taking parent substation in to account). Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Demand connection potential indicator of parent substation. Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Generation connection potential indicator of parent substation. Red (< 10% of capacity remaining), Amber (≥ 10% and < 25% of capacity remaining), Green (≥ 25% of capacity remaining)

Maximum demand capacity available at the Bulk Supply Point

Maximum generation capacity available at the Bulk Supply Point

Types of generator connected at substation

Sum of installed generation capacity connected at substation

Sum of kVA of generation firm quotes offered at the substation, but not yet accepted.

Sum of kVA of generation firm quotes with accepted offers, but not yet connected.

Statement of Works text with reference to the Grid Supply Point.