Heat Map Data - Substation Areas

Data such as firm capacity, max and min demands, existing and contracted generation/demand are used to calculate a thermal headroom figure for demand and generation. Fault level, tapchanger and National Grid Appendix G data are then used to calculate if there are any related constraints for each site other than thermal headroom.

If you are unsure of any of the column meanings, please hover over the column heading for a description. Related Feature Pages Embedded Capacity Register Page - Our Embedded Capacity Register provides information on generation and storage sites, both connected to and accepted to connect to our network. Network Availability Heat Maps - Our Heat Maps provide a high level overview of network availability at Primary, Bulk Supply and Grid Supply Point level using a traffic light system Regional Demand and Generation Tracker - Our Regional Demand and Generation Tracker provides near real time data for the generation mix of our network over the last 30 days.