The NCR offers a public API which enables end users to automate retrieval of the registry. API request can be filtered according to data types to allow retrieval of sub-sets of the NCR database.
Until now, API filters included the following parameters: network (using relevant network id), country (based on country code), postcode (full or partial), lat-long (geocode), distance (from centre of postcode or lat-long coordinate), limit (number of devices returned), and units (miles or km).
Examples of filters API calls include the following:
The 10 closest devices to your postcode: http://chargepoints.dft.gov.uk/api/retrieve/registry/postcode/EC3A+7BR/limit/10/
All the devices within a 10 mile radius of your position: http://chargepoints.dft.gov.uk/api/retrieve/registry/lat/51.545581/long/-0.077301/dist/10/
All the connector types in CSV format:
The NCR has now extended the rage of API filters available which now also include: post-town/city (by name), device id (using full encrypted id), connector type (using connector id), and device power rating (kW).
Below are examples of these API calls in action:
Records based on post town using the post-town parameter: http://chargepoints.dft.gov.uk/api/retrieve/registry/format/json/post-town/bristol
Record based on its unique device id using the device-id parameter: http://chargepoints.dft.gov.uk/api/retrieve/registry/format/json/device-id/a999c0cab150490ffefb7ce9ec889830
Return records based on the connector type using the connector-type-id parameter: http://chargepoints.dft.gov.uk/api/retrieve/registry/format/connector-type-id/4
Return records based on the rated output in kWs using the rated-output-kw parameter: http://chargepoints.dft.gov.uk/api/retrieve/registry/format/json/rated-output-kw/3.7
Fo connector type calls, the following connector type ids are available:
Id – Connector Type
3 – 3-pin Type G (BS1363)
4 – JEVS G105 (CHAdeMO) DC
5 – Type 1 SAEJ1772 (IEC 62196)
6 – Type 2 Mennekes (IEC62196)
7 – Type 3 Scame (IEC62196)
15 – Type 2 Combo (IEC62196) DC
16 – Type 2 Tesla (IEC62196) DC
17 – Commando 2P+E (IEC60309)
18 – Commando 3P+N+E (IEC60309)
Detailed information about the existing and new API filters will shortly be added to existing API documentation found at: http://chargepoints.dft.gov.uk/api/help
For more information about the issues raised at the workshop, contact the NCR by phone on 0300 777 0001 or email email@example.com.