Source
https://www.energyrating.gov.au/industry-information/publications/2015-residential-baseline-study-australia-and-new-zealand-2000-2030 — original source (opens in a new tab; the file is not redistributed)
EnergyConsult (2015) — RBS1.0 Technical Appendix
The data-provenance companion to OT_071 — documents that the RBS's NZ figures are largely borrowed from Australia
The detailed data-sources/input-processing appendix (EnergyConsult for the Australian Dept of Industry & Science, August 2015; RBS 1.0) behind the Residential Baseline Study methodology that OT_071 summarises. Its standout NI value is the explicit per-product “New Zealand” provenance — repeatedly recording that NZ usage/efficiency was assumed equal to Australia, and that NZ space-conditioning results are “approximate at best.” This caveat qualifies every RBS-derived NZ figure, and hence the RA→OT_070 chain. data_quality: verified.
Summary
The Technical Appendix to the 2015 Residential Baseline Study (RBS 1.0) — the data-sources and input-processing detail behind the bottom-up AEC = Stock × UEC model documented at a higher level in OT_071. For each product category (white goods, cooking, lighting, water heating, space conditioning, IT & home entertainment, other equipment, building stock) it records the sales, efficiency, usage, life and standby data sources for Australia and New Zealand separately. For Neobiome its lasting value is the documented NZ data provenance — including the recurring “NZ assumed = Australia” borrowing, the genuinely-NZ sources the model does rest on, and a bespoke NZ climate-zone space-heating model that covers the Nelson/Marlborough (pilot) zone.
Key claims
- claim: "The RBS1.0 Technical Appendix (EnergyConsult for the Australian Dept of Industry & Science, August 2015) documents per-product-category data provenance (sales, efficiency, usage, life, standby) for Australia and New Zealand. It is the full version of the data-collection method that the RBS2.0 methodology report summarises as 'Appendix A'. It also sets out the space-conditioning UEC method (combined engineering-algorithm + AccuRate thermal modelling) and the peak-demand method kW = units × kW/unit × RLF × DF × CF, with the coincidence factor = 1.0 for residential-only modelling."
source_location: "Methodology – Further Details pp.1–13; Peak Demand Method pp.7–9"
- claim: "NZ figures are largely borrowed from Australia. NZ appliance usage rates were 'assumed to match Australian usage' (white goods); for non-air-conditioner products efficiency and size are 'assumed to be effectively the same for NZ and Au … shared standards and markets'; and NZ space-conditioning usage 'can only be considered approximate at best … there appears to be no accurate usage data available in New Zealand, and even the Branz HEEPS residential energy usage data is now ten years old.' This qualifies every RBS-derived NZ appliance/energy figure."
source_location: "White Goods–NZ p.18; Space Conditioning–NZ p.26; Cooking–NZ p.18"
- claim: "The genuinely-NZ data sources the RBS rests on: BRANZ HEEP Study Report SR155 'Energy Use in New Zealand Households' (2006) for NZ electrical cooking energy; BRANZ HEEP (esp. 2005) + 1986/1996 census for wetback (wood) water-heater penetration; Burgess et al (2010) 'Lighting in New Zealand Homes' + EECA CFL sales for lighting; the EECA product registration database for electric water-heater and white-goods sales; Statistics NZ QuickStats (2013 census heating fuels) + BRANZ SR240 Housing Condition Report (2011) for space-heating stock and insulation penetration."
source_location: "Cooking–NZ p.17–18; Water Heating–NZ p.23; Lighting–NZ p.21; Space Conditioning–NZ p.26; Building Stock–NZ p.31"
- claim: "NZ space-conditioning thermal loads were modelled bespoke by Sustainability House (AccuRate) for typical detached and duplex dwellings across six NZ climate zones — Auckland, Hamilton, Nelson/Marlborough, Wellington, Christchurch, Queenstown Lakes — and three regulatory periods (pre-1978 insulated/uninsulated, 1978–2000, 2000–2008, 2008+), ~2,688 design/climate variations; NZ used 'deemed' space-condition energy loads (unlike AU's NatHERS star-rating allocation). NZ water heaters have significantly longer lives than Australian, so separate NZ ESWH products were created."
source_location: "Space Conditioning–NZ p.26; Calculation of Thermal Efficiency–NZ p.34; Water Heating–NZ p.23"
- claim: "Appliance usage/life constants (Australian, assumed to carry to NZ): dishwasher 200 cycles/yr, clothes washer 229 cycles/yr, clothes dryer ~18–20 cycles/yr; lighting 1.4 hours per lamp per day; cooktop/oven/upright operating life 14 years; front-loader washers use 2–4× more energy than top-loaders. Lighting/IT lives are de-rated to dwelling life (LED 40→20 yr, fluorescent 20→15 yr)."
source_location: "White Goods (cycles) p.15; Lighting (1.4 h/day, lives) p.20; Cooking (14-yr life) p.18"Neobiome Intelligence relevance
The headline contribution is the documented “NZ ≈ Australia” borrowing: the RBS sets NZ appliance usage equal to Australian and treats non-AC efficiency/size as shared, and explicitly flags NZ space-conditioning as “approximate at best.” Because Rewiring Aotearoa’s household model (OT_070) draws appliance energy from the RBS, this caveat propagates straight into the RA-derived figures the NI model cross-checks against — so it is the provenance reason to treat RBS/RA NZ appliance numbers as AU-anchored estimates, not NZ-measured values. The appendix also names the genuinely-NZ data the RBS does rest on — BRANZ HEEP (SR155 2006; cf. the wiki’s OT_037 SR221), Burgess et al (2010) lighting, Statistics NZ QuickStats heating fuels, BRANZ SR240 housing condition, and Sustainability House AccuRate NZ modelling — most already in the wiki’s scope. The pilot-relevant find: the RBS modelled NZ space-heating loads for the Nelson/Marlborough climate zone (the Lower Moutere pilot zone) via Sustainability House AccuRate — a documented (if “deemed”) space-conditioning-load basis for the pilot region. The appliance usage constants (dishwasher 200 / washer 229 cycles/yr, 14-yr cooking life, lighting 1.4 h/lamp/day, front-loaders 2–4× top-loaders) are reusable sanity-checks for the NI demand build. ⚠ Caveats: Australian-led, NZ outputs “approximate at best,” 2015 vintage, and RBS1.0 (superseded by RBS2.0 / OT_071). Advances RT_237 (provenance depth; the NZ output numbers remain in the RBS output-tables xlsx).
Research targets
Research gaps
- RT_237 (advanced): this appendix deepens the provenance (and documents the AU-borrowing caveat); the closing NZ numbers are in the RBS Output Tables (NZ) xlsx.
Connections
Links to
Referenced by
EDT domains (1): D01: Renewable Energy & Storage Systems