Matthew Keir
posted this
01 August 2016
- Last edited 02 August 2016
Hi Richard,
Retail connection data on EMI comes from the registry – the national database of connections. We report on all active ICPs.
In terms of C&I connections – EMI reports break out market segments from ICPs in the registry using ANZSIC codes. These codes are populated by the retailer (trader) who usually has the relationship with the customer. As discussed in the report notes, market segments on EMI are not mutually exclusive with SMEs overlapping commercial and industrial segments. However, perhaps it’s due to the definition here that you think there are too many? I have copied the relevant section from the notes below:
Residential connections have no ANZSIC code. Small and Medium Enterprise (SME) connections are defined as those assigned meter categories 1 and 2 (low voltage up to 500A) with an ANZSIC code excluding those relating to central or local government and other utility services. Industrial connections have ANZSIC code from A through E and commercial connections F through Z. More information on ANZSIC codes is available at www.stats.govt.nz.
Examples: www.emi.ea.govt.nz/r/xnjmh and www.emi.ea.govt.nz/r/um4e3.
Traders hold the responsibility to have reasonable processes to keep this information up-to-date. Guidance for traders is available here http://www.ea.govt.nz/operations/retail/the-registry/about-the-registry/.
If you are more interested in the capacity to use electricity then meter categories might provide useful insight. Meter categories range from 1 to 5 - increasing with the capacity of the connection to the network. Household meters are category 1. These fields are populated in the registry by the distributor or network participant who is responsible for the connections to their network. Examples are www.emi.ea.govt.nz/r/5uqzn and www.emi.ea.govt.nz/r/wuccn.
Because the ANZSIC code field and meter category field are populated by different participants, there can at times be a small number of discrepancies that might stand out. For example today I can see that there are 8 residential ICPs listed as having category 3-5 meters www.emi.ea.govt.nz/r/rszjo. These could be data errors or could be due to the interpretation – for example, it could be the connection for building services in the basement of a large apartment building or retirement village etc. These might be better categorised as commercial connections.
Registry information does not include any information for consumers directly connected to the grid.
In terms of volume breakdown information for commercial and industrial segments, Malcolm has pointed you in the best direction. There should be more up to date information than 2012 available.
Regards,
Matthew
