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Postcode Checker

Are you in a constraint zone?

Enter the postcode of your flexibility site in the box below. 

Please note that only EHV zones can be checked using this tool,  an excel spreadsheet of qualifying postcodes for LV flexibility zones is available to download here.

An excel spreadhseet of qualifying postcodes for EHV flexibility zones is available to download here.  

Note: Postcode data can't always be 100% accurate in relation to our network area boundaries.  Contact us via email nged.flexiblepower@nationalgrid.co.uk to check any sites you are unsure of.

Please enter a valid postcode.

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Sorry, it appears you are not within one of our zones.

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