Quarter ended	CPI electricity component	MBIE QSDEP	NZIER cost index	NZIER cost index - long-term energy outlook
30/09/2010	100.00	100.00	100.00	100.00
31/12/2010	101.68	102.63	103.95	104.28
31/03/2011	102.08	102.91	104.77	105.24
30/06/2011	104.89	105.90	106.60	108.24
30/09/2011	104.57	102.76	107.95	110.50
31/12/2011	104.09	103.03	110.28	112.14
31/03/2012	104.17	103.13	112.24	112.97
30/06/2012	108.81	108.11	117.12	116.17
30/09/2012	109.21	108.41	119.71	116.87
31/12/2012	109.46	108.91	119.96	117.60
31/03/2013	109.62	109.05	120.32	118.84
30/06/2013	112.50	111.35	120.88	120.68
30/09/2013	113.14	111.84	120.11	121.41
31/12/2013	112.74	111.98	120.19	121.98
31/03/2014	112.82	112.10	120.09	122.15
30/06/2014	117.55	114.64	120.94	122.95
30/09/2014	117.31	114.69	120.70	122.48
31/12/2014	116.75	114.70	120.59	121.92
31/03/2015	116.83	114.66	120.67	121.58
30/06/2015	117.55	114.84	119.58	120.42
30/09/2015	117.47	115.20	118.89	119.67
31/12/2015	117.23	115.47	118.52	119.03
31/03/2016	117.47	115.43	118.28	118.75
30/06/2016	119.55	117.15	116.92	117.18
30/09/2016	120.11	117.76	115.82	115.77
31/12/2016	119.87	118.06	115.91	115.92
31/03/2017	120.03	117.98	116.15	116.69
30/06/2017	121.79	118.96	115.60	116.36
30/09/2017	122.04	119.07	116.18	116.20
31/12/2017	122.28	119.96	117.04	116.86
31/03/2018	123.26	120.62	118.11	117.39
30/06/2018	125.33	120.71	118.56	117.53

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About this report

This report shows indexed residential price changes against the estimated indexed costs that retailers must meet to operate.

Report notes

All series are by default indexed to 2010 Q3 = 100. The base date parameter can be used to select an alternative period as the base.
The NZIER cost index or synthetic price has been estimated for the Authority by NZIER. It is designed to represent the price at which a new entrant retailer without a generation portfolio could enter the market and sell to residential customers. A report describing the NZIER synthetic price and an accompanying spreadsheet detailing its construction, underlying data, and input assumptions is available at www.emi.ea.govt.nz/Retail/Datasets/_AdditionalInformation/SupportingInformationAndAnalysis/2014/20140720_NZIER_SyntheticRetailPrice.
The energy component of the NZIER cost index is based on the settlement price of ASX baseload quarterly futures contracts. The default index, i.e. NZIER cost index, uses the settlement price of all contracts settled in the current quarter. An alternative index, NZIER cost index – long-term energy outlook, attempts to remove the effect of the current year’s hydrology situation by excluding settlement prices from the preceding four quarters, and can be selected from the series filter.
The MBIE QSDEP is the Quarterly Survey of Domestic Electricity Prices prepared by MBIE and is available at www.mbie.govt.nz/info-services/sectors-industries/energy/energy-data-modelling/statistics/prices.
The MBIE annual residential electricity cost is available as part of the quarterly residential sales survey (QRSS) prepared by MBIE and is available at www.mbie.govt.nz/info-services/sectors-industries/energy/energy-data-modelling/statistics/prices . We’ve used the annual series, which is available when the base date is set to Q1, to avoid needing to adjust for volume differences between quarters.
The CPI electricity component is the contribution of electricity to changes in the quarterly Consumer Price Index published by Statistics New Zealand and is available at www.stats.govt.nz/browse_for_stats/economic_indicators/cpi_inflation/info-releases.aspx.

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