Important Change – Heat Maps Moving to the Open Data Portal
The latest SP Manweb Heat Map data is now available through our Open Data Portal, our central platform for accessing SP Energy Networks' network datasets.
By registering for the Open Data Portal, you'll be able to access the latest Heat Map data, discover other network datasets, and benefit from a single location for SP Energy Networks' open data publications.
To view the latest Heat Map dataset, please visit Capacity Heatmaps Information Model SPM and register for an Open Data account.
Please note: The Heat Map displayed on this webpage is based on data published in October 2025 and is no longer updated. For the latest Heat Map data and future updates, users should access the Open Data Portal.
This webpage will remain available until 3rd August 2026 to support the transition to the Open Data Portal.
Alternative DG Connection Offers
Alternative DG Connection Offers
For Distribution Connection requests on constrained areas of our network, shown in red colour on the maps, please click here to explore alternative connection offers.
What Next?
What Next?
To apply for a Generation Connection click here where you will find our guides and application forms.
User Guide
User Guide
For more information about how to use our Heat Map application and its additional functions, view the user guide.