DNO API · Distribution Network Operators
Assess the viability of your energy infrastructure project in seconds.
Access live information from the UK's six DNOs to locate substations, check available capacity, map cable routes and identify tower locations — helping you make informed, data-driven land decisions with confidence.
Our DNO tools are also available as part of a professional Searchland licence.
DNO data sources
DNO substations data that integrates with bespoke platforms & GIS
Get access to an in-depth array of DNO endpoints, including substation, tower and line locations, substation type, headroom rating, voltage, voltage group, tower type and operator information. Includes data from SSE, SPEN, WPD, ENWL, UKPN, NPG and National Grid.
View our API documents
DNO endpoints
Key API features.
Every field that powers the Searchland DNO layer — consistent geometry and operator metadata across substations, towers and lines.
View our API documents
Substation locations
Pinpoint the exact locations of substations for strategic planning and analysis.
Tower & line locations
Positions of towers and lines, with voltage capacity and voltage group.
Substation type
Primary, grid or BSP classification to understand each site's role.
Headroom rating
Demand and generation headroom in MW, refreshed monthly.
Voltage details
Operating voltage levels at substations and network points.
Voltage group
Voltage-band classification for targeted power management.
Tower type
Pylon and support-structure types across the network.
Operator information
Owning DNO and network operator for coordination.
Capacity & cable routes
Available capacity and cable corridors for feasibility checks.
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Make critical decisions faster
Access to accurate energy infrastructure data, instantly. Make more informed and strategic decisions regarding site selection, project feasibility and resource allocation.
Get an edge on the competition
Find sites that your competitors miss. Our DNO data is updated monthly, ensuring you have the most up-to-date access to substation locations and headroom capacity.
Enhance your existing software
Works with your current GIS software. Our API integrates smoothly, allowing you to consolidate all necessary data in one place — no need to adopt a new system.
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Endpoint catalogue
More Searchland APIs.
The DNO API is one of ten datasets behind the Searchland platform — every one available through the same clean, consistent API.
FAQ
Answers.
What is the Searchland API?
A way to access Searchland's national property, energy and planning datasets programmatically, so the data lives inside your own systems, dashboards or applications — no platform UI required.
How often is the DNO data updated?
DNO data is refreshed weekly, automatically pulled from all six major UK DNO providers.
What's included in the headroom data?
Headroom data shows substation demand headroom and generation headroom - the available capacity for new demand or generation connections - along with line voltages across the network.
We can’t wait to get you on board
Ready to access our data?
Our property data API is available as an off-the-shelf solution, or as a package tailored to your specific needs. Get in touch with us to start a conversation.