ghg-inventory-1990-2013

Residential – Liquid Fuels.
Key categories identified in the 2013 trend assessment from the other sectors category
include CO 2 emissions from:
Agriculture/forestry/fishing – Solid Fuels
Commercial/Institutional – Gaseous Fuels
Commercial/Institutional – Liquid Fuels
Residential – Solid Fuels
Residential – Liquid Fuels.
Methodological issues
There are no notable methodological issues in this category.
Activity data
Liquid fuels
As mentioned in section 3.3.2, this Inventory continues to use the results of the Annual
Liquid Fuel Survey that began in 2009. The purpose of this survey is to capture the
allocation of fuel resold by small independent resellers. In 2013, these independent
resellers accounted for nearly 26 per cent of national diesel deliveries and 7 per cent of
national gasoline deliveries.
As a result of resale data captured by the Annual Liquid Fuel Survey, emissions that
would otherwise be reported under subcategory 1.AA.3.B Road transportation are
allocated to the correct (sub)category.
For time-series consistency, these reallocations are also made from 1990–2008, before the
collection of data on the resale of liquid fuel by small, independent distributors.
As mentioned in section 3.3.7, historical national energy sales surveys captured fuel use
by mining operations under ‘other primary industry’. For consistency with IPCC (1996)
guidelines, this Inventory uses the Statistics New Zealand Energy Use Survey: Primary
Industries 2008 (Statistics New Zealand, 2008) to estimate the split of historical other
primary industry between forestry and logging and mining (see table 3.3.7).
Table 3.3.7
Split of ‘other primary industry’
Petrol
(%)
Diesel
(%)
Fuel oil
(%)
Forestry and lokting 85.9 27.2 51.4
Mining 14.1 72.8 48.6
Solid fuels
In 2010, it was discovered that some coal reported as sold to the commercial sector was in
fact being on-sold. As a result, some activity previously reported under the Commercial
sector has been reallocated to the Agriculture sector. This on-selling is assumed to
continue across the time series 1990–2013.
Solid biomass
New Zealand estimates residential combustion of biomass using household number
estimates from Statistics New Zealand along with five-yearly census figures estimating
80 New Zealand’s Greenhouse Gas Inventory 1990–2013