VCT.NZ
GREENHOUSE GAS EMISSIONS INVENTORY REPORT 2024
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
Introduction
This report is for the Vector Limited Group (Vector or the group). The group comprises Vector Limited and its subsidiaries. Vector Limited is NZX listed and 75.1% owned by Entrust, a private community trust. A list of all subsidiaries can be found in appendix 1.
The purpose of this report is to transparently disclose Vector's greenhouse gas ("GHG") emissions: how they are quantified, how Vector is tracking towards its reduction target and steps planned to further reduce GHG emissions.
The inventory covered in this report is a complete and accurate quantification of the amount of GHG emissions that can be attributed to Vector's operations within the declared boundary and scope for the specified reporting period. Any exclusions from reporting are disclosed and justified.
This report has been prepared in accordance with the Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard [1] ("GHG Protocol Standard"), the Greenhouse Gas Protocol: Corporate Value Chain (Scope 3) Accounting and Reporting Standard [2] ("GHG Protocol Value Chain Standard"), and other related technical guidance issued under the GHG Protocol Standards.
Statement of intent
Vector reports on its GHG emissions on an annual basis and has been calculating its carbon footprint since 2017. The intended users of this report are all interested stakeholders, including shareholders, investors, regulators, communities, employees, customers and contractors. The GHG inventory has been reasonably assured by KPMG; see appendix 3.
Reporting period covered
This GHG inventory report covers Vector's financial year 1 July 2023 to 30 June 2024 ("FY2024"). A summary of emissions can be found in both Vector's annual report 2024 and climate-related disclosures 2024.
Disclaimer
This report is not earnings guidance or financial advice for investors. Rather, this report provides a summary of Vector's greenhouse gas emissions inventory. The report reflects Vector's current understanding as at 26 August 2024, in respect of the 12 months ended 30 June 2024.
Greenhouse gas emissions calculations use data and methodologies that are developing. Vector acknowledges that the understanding of climate change, and the inputs to assist with this understanding are constantly evolving.
This report contains forward looking statements (including targets and assumptions) that may not evolve as predicted.
Vector (including its directors, officers and employees) do not:
The greenhouse gas emissions data described in this report, and Vector's strategies to achieve our greenhouse gas emissions target, may not eventuate or may be more or less significant than anticipated. There are many factors that could cause Vector's actual results, performance or achievement of climate- related targets to differ materially from that described, including economic and technological viability, climatic, government, consumer, and market factors outside of Vector's control. Vector gives no representation, warranty or assurance that actual outcomes or performance will not materially differ from the forward-looking statements.
To the maximum extent possible under New Zealand law, Vector (including its directors, officers and employees) does not accept and expressly disclaims any liability whatsoever for any direct, indirect or consequential loss or damage occasioned from any use or inability to use the information contained in this report, whether directly or indirectly resulting from inaccuracies, defects, errors, omissions, out of date information or otherwise.
We recommend you seek independent advice before acting or relying on any information in this report. Vector reserves the right to revise statements made in, or its strategy or business activities described in, this report, without notice.
This disclaimer should be read along with other methodologies, assumptions and uncertainties and limitations contained in this report, as well as in Vector's climate-related disclosures for FY2024. All amounts disclosed in this report are estimates and are in NZD unless context otherwise requires.
This report is not an offer document and does not constitute an offer or invitation or investment recommendation to distribute or purchase securities, shares, or other interests. Nothing in this report should be interpreted as capital growth, earnings or any other legal, financial tax or other advice or guidance. For detailed information on our financial performance, please refer to our annual report,available on vector.co.nz/investors/reports.
2 Vector GHG Emissions Inventory Report FY2024
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
Summary of emissions
In FY2024, Vector's greenhouse gas emissions across scopes 1, 2 and 3 amount to 1,530,722 tCO2e. This is a 19% reduction from FY2020, Vector's base year.
Table 1: GHG inventory by scope and category in tCO2e. FY2024 emissions highlighted in green indicate a reduction since the base year or the year in which emissions were first reported, whereas emissions in red show increases.
EMISSIONS CATEGORY
FY2020
FY2021
FY2022
FY2023
FY2024
Total scopes 1, 2 and 3
1,900,841
1,682,645
1,602,955
1,620,856
1,530,722
Scope 1
24,431
19,991
23,763
20,019
15,545
Natural gas distribution fugitive emissions ‡
18,313
13,507
16,218
13,323
9,379
SF6 leakage ‡
524
1,263
2,081
1,299
924
Other fugitive emissions
141
142
134
141
65
Stationary combustion
3,558
2,971
3,348
3,183
3,102
Vehicle fleet
1,895
2,108
1,982
2,073
2,075
Scope 2
33,148
34,448
39,486
42,810
26,900
Electricity consumption* (market-based)
643
826
408
220
8
Electricity consumption (location-based)
815
801
891
1,210
682
Electricity distribution losses
32,505
33,622
39,078
42,590
26,892
Scope 3
1,843,262
1,628,206
1,539,706
1,558,027
1,488,277
Purchased goods and services
Upstream-purchased natural gas
227,569
170,442
136,821
152,290
148,230
Upstream-purchased LPG
46,555
47,609
52,806
58,140
62,529
Fuel used by field service providers
6,475
6,822
6,456
7,235
7,127
Upstream-purchased materials and products
15,266
11,733
13,874
11,783
16,089
Upstream-purchased other goods and services
75,939
71,465
75,080
79,559
78,783
Fuel-andenergy-related activities
1,405
1,312
1,450
1,456
1,406
Upstream transportation
2,717
2,557
3,225
2,891
3,085
Waste generated in operations
92
174
Business travel
332
103
95
271
187
Employee commuting and working from home
933
821
Use of sold products
Distributed natural gas AKL - Total
772,265
760,185
711,337
735,048
706,356
Sold natural gas - AKL
151,603
115,578
57,149
66,376
42,475
Shipped natural gas - AKL
55,245
66,265
64,985
Other distributed natural gas - AKL
620,662
644,607
598,943
602,407
598,896
Sold natural gas - non-AKL
562,567
381,871
231,127
223,568
184,162
Shipped natural gas - non-AKL
47,002
183,614
160,293
154,973
Sold LPG
131,385
126,245
122,904
123,542
123,565
Investments
Liquigas
87
89
108
105
86
Bluecurrent
700
771
809
821
703
Biogenic carbon
162
134
150
138
131
3
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
Glossary of terms
Table 2: Definition and glossary of terms
TERM
DESCRIPTION
AKL
Auckland
Carbon footprint
Vector's greenhouse gas emissions covered by the Kyoto Protocol, calculated in tonnes of carbon dioxide
equivalent (tCO2e)
CO2
Carbon dioxide
CRD
Climate-related disclosures - that comply with Aotearoa New Zealand Climate Standards
DEFRA
Department of Environment, Food and Rural Affairs (UK)
EGF
Vector's electricity distribution, gas distribution and fibre business
Emissions
Greenhouse gas emissions
EPD
Environmental product declaration
EV
Electric vehicle
FSP
Field service provider
FY
Financial year
GHG
Greenhouse gas
For the purposes of this report, GHGs are the seven gases listed in the Kyoto Protocol. These are currently:
carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs),
sulphur hexafluoride (SF6), and nitrogen trifluoride (NF3)
GHG Protocol
The Greenhouse Gas Protocol, a partnership between the World Resources Institute (WRI) and the World Business
Council for Sustainable Development (WBCSD). The GHG Protocol develops standards and guidance, such as the
Corporate Standard and the Corporate Value Chain (scope 3) Standard, both used as guidance for this report
GWP
Global warming potential, a measure of how much energy the emissions of 1 tonne of a greenhouse gas will
absorb over a given period, relative to the emissions of 1 tonne of carbon dioxide (CO2)
GXP
Grid exit point
HVAC
Heating, ventilation, and air conditioning
ICP
Installation control point
IPCC (AR5)
Intergovernmental Panel on Climate Change (Fifth Assessment Report)
LPG
Liquefied petroleum gas - a mixture of hydrocarbons, consisting primarily of propane and butane. The higher
density - in contrast to natural gas - allows it to to be easily compressed to liquid, and is therefore largely
distributed in bottles
MfE
Ministry for the Environment (New Zealand)
NZ
New Zealand
NZU
New Zealand units
NZECS
New Zealand energy certificate scheme
NZ ETS
New Zealand emissions trading scheme
OGMP
Oil and Gas Methane Partnership
SBTi
Science Based Targets initiative
SELMA
Street evaluation laser methane assessment
SF6
Sulphur hexafluoride - a gas used to electrically insulate electrical assets. SF6 has a global warming potential of
23,500 times that of CO2
T&D
Transmission and distribution
tCO2e
Tonnes of carbon dioxide equivalent
TPD
Third-party damages
Vector
Vector Limited Group
WTT
Well-to-tank
4 Vector GHG Emissions Inventory Report FY2024
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
1. Organisational boundaries
Description of Vector
Vector is a New Zealand energy company which runs a portfolio of businesses delivering energy and communication services to more than 624,000 residential and commercial customers across New Zealand.
The operations of the group are electricity and gas distribution, natural gas and LPG sales, telecommunications and new energy solutions. For further information, visit vector.co.nz.
Organisational boundaries
Vector uses the operational control approach, as defined by the GHG Protocol Standard. This approach was chosen as it allows a focus on emissions over which the group has greatest control, and thereby can influence most with emissions reduction measures.
For carbon accounting purposes, emissions are categorised into the business areas as outlined in figure 1. A detailed list of all subsidiaries and shareholdings under Vector and their relevance for carbon accounting can be found in appendix 1.
Treatment of investments
In addition to these business areas, Vector has investments in a number of businesses that complement our network businesses and strengthen our capabilities in the energy services field. This subsection discusses the treatment of emissions generated by those businesses.
For carbon accounting purposes, Vector has set a threshold for equity investments of 20%, unless significant influence can be evidenced.
Liquigas Limited (60.25%)
Liquigas provides tolling, storage and distribution of bulk LPG in New Zealand. It is not considered to be under Vector's operational control, because Vector does not have "full authority to introduce and implement its operating policies at the operation" (definition of operational control according to the GHG Protocol Standard). As a result, Liquigas' scope 1 and 2 emissions are included under Vector's scope 3 - category 15 (investments), with a 60.25% equity share. On 26 July 2024 (after the balance date of this disclosure) Vector entered a conditional agreement to sell the 60.25% shareholding of the Liquigas business. Any future sale of Liquigas will be reflected in future reports as required/appropriate.
Bluecurrent (50%)
Previously fully owned by Vector as Vector Metering, Bluecurrent manages around 2.5 million advanced electricity and gas meters across New Zealand and Australia. Bluecurrent provides high- resolution energy data services to enable new and innovative energy products that give customers large and small the ability to make smarter energy choices. Vector has ceased operational control of Bluecurrent and, via the same method as Liquigas, accounts for a proportional share of Bluecurrent's scope 1 and
2 emissions under scope 3 - category 15. Bluecurrent is jointly owned by QIC and Vector.
mPrest Systems Limited (8.1%)
At the balance date of this disclosure, Vector held an 8.1% shareholding in mPrest Systems (2003) Limited. The mPrest technology allows companies to better monitor, analyse, and control energy networks and connect traditional infrastructure like electricity lines and substations with new technology like solar and battery energy solutions.
On the 22 August 2024 (after the balance date of this disclosure) Vector sold its shares in mPrest.
Vector's shareholding in mPrest is excluded from our analysis.
Treatment of business closures
Vector Powersmart
Vector Powersmart discontinued operations as of 31 December 2023. Because this was an organic business shutdown, as opposed to a sale, the FY2020 base year does not need to be rebased. Further to this, Vector Powersmart's emissions are well below Vector's materiality threshold for re-calculation.
The data captured during the period October 2023 to December 2023 may not be complete due to the business not being operational in January 2024 to conduct adequate quality control. We expect any excluded data to be immaterial and therefore have not conducted quality control of this data from the group level.
Natural Gas Trading
Vector's Natural Gas Trading business has been on a wind-down since FY2020, whereby contracts for natural gas sales were not renewed. This has led to a year-on-year reduction in gas sales- related scope 3 emissions, under category 11 (use of sold products) and category 1 (purchased natural gas). In FY2024, Vector entered into a conditional agreement to sell the remaining contracts of the Natural Gas Trading business as of 1 July 2024, and shut down the business from then on. Because the remaining contracts are to be sold to a third party, for FY2025 reporting Vector will rebase the emissions associated with these sold contracts.
Free public electric vehicle chargers
Since 2016, Vector has provided free public electric vehicle ("EV") charging stations across Auckland to support the uptake of EVs. The electricity costs associated with charging these vehicles are paid for by Vector, and therefore have been included in our scope 2 emissions. In FY2024, Vector sold/de-energised our charging stations. The emissions associated with the electric chargers do not meet Vector's materiality threshold for rebasing
the FY2020 base year.
5
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
1. Organisational boundaries (continued)
Figure 1: Vector Limited's businesses per organisational boundaries. Vector's Natural Gas Trading business and Vector Powersmart have been discontinued as of 1 July 2024 and 31 December 2023, respectively.
EGF
Vector Ongas
Electricity
distribution
network
Natural gas distribution network
Vector
Fibre
LPG
Owns and operates the electricity network within the wider Auckland region. This consists of more than 19,000 km of electricity lines, delivering power to over 624,000 homes and businesses.
Owns and operates the gas distribution network in the wider Auckland region, supplying gas to over 120,000 installed connection points, through 4,650 km of mains pipelines, distributing around 13 PJ of gas per year.
Designs, builds and maintains data networks in the wider Auckland region.
Distributes and sells LPG to residential, commercial and industrial customers throughout New Zealand, through bottled LPG products and piped LPG networks. On 26 July 2024 (after balance date of this disclosure) Vector entered a conditional agreement to sell the LPG business. Any future sale of the LPG business will be reflected in future reports as required/appropriate.
Vector Limited
Natural
Gas
Trading
HRV
Vector
Powersmart
Vector
Technology
Solutions
Supplies piped natural gas to industrial and commercial businesses in the North Island including customers in the agriculture, horticulture and manufacturing industries. This business has been discontinued as of 1 July 2024.
Provides energy-efficient solutions covering home ventilation, home heating, and water filtration systems, as well as electric vehicle charging.
Vector Powersmart has delivered solar photovoltaic and energy storage systems in New Zealand and the Pacific Islands. This business has been discontinued as of 31 December 2023.
A digital solutions business that takes internally developed products to market.
6 Vector GHG Emissions Inventory Report FY2024
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
2. Operational boundaries
Operational boundaries
The GHG Protocol Standard splits emissions into three categories:
Scope 1 - Emissions Vector directly controls, such as vehicle fleet fuel combustion, diesel backup generators, natural gas fugitive emissions, and SF6 leaks.
Scope 2 - Vector's consumption of purchased electricity, and electricity distribution losses along the network.
Scope 3 - All other indirect value chain emissions, such as customer energy consumption and supply chain emissions.
The GHG Protocol Value Chain Standard splits scope 3 emissions into 15 categories. To gain a more comprehensive understanding of our emissions, in FY2020 Vector commissioned an external review of our carbon accounting methodology. This included a scope 3 screening exercise to identify applicable and material categories and activities across Vector's supply chain. A total of
14 categories were determined as being applicable to Vector (all but category 10 - processing of sold products), of which two were defined as material. The threshold at which a scope 3 category is considered as material is set to 1% of total scope 3 emissions.
During the screening process, emissions were calculated for 11 scope 3 categories, with emissions from the remaining three categories considered to be included in other categories of the inventory (categories 2 and 8) or to be zero (category 12). Prior to FY2023, we chose to externally report only on emissions categories that were material (categories 1 and 11) or where data was deemed robust (categories 3, 4, 6 and 15). With additional work undertaken to more accurately determine emissions from other sources, from FY2023 we also reported on emissions under categories 5 and 7 as well as emissions from all purchased products and services under category 1.
Included in other categories
Category 2 - capital goods: Included in category 1 as it was not possible to separate new infrastructure construction and other assets from maintenance of existing infrastructure.
Category 8 - upstream leased assets: Included in scope 1 and 2, as leased assets are expected to be under Vector's operational control.
Excluded scope 3 categories
Category 9 - downstream transportation and distribution: immaterial.
Category 12 - end-of-life treatment of sold products: expected to be zero.
Category 13 - downstream leased assets: immaterial.
Category 14 - franchises: immaterial.
GHG emissions source inclusions
Table 4 provides an overview of all emissions sources highlighted in Vector's GHG inventory, including their data sources, calculation methods and an assessment of data quality and uncertainty.
For completeness, Vector is reporting on well-to-tank ("WTT") emissions for fuel used by field service providers ("FSPs") under categories 1 and 4 as well as on emissions from gas distributed via Vector's gas network under category 11 (other distributed natural gas).
As some gas sold or shipped by Natural Gas Trading is transported via Vector's gas distribution network, these volumes are subtracted from the overall 'other distributed natural gas' amount to avoid double counting.
Exclusions from GHG inventory
Table 3 shows scope 3 emissions sources that were excluded from reporting (in addition to the excluded categories listed previously) and the reasoning behind this.
Other emissions - biogenic CO2
Vector uses a 5% biodiesel blend in generators used by Vector Fibre and the electricity distribution network. In FY2024, Vector's combustion of biodiesel blend created 131 tonnes of biogenic emissions. This is a reduction of 19% from FY2020.
Table 3: Excluded emissions sources from reporting
EXCLUDED EMISSIONS ACTIVITY
REASONS FOR EXCLUSION
Emissions from FSP fuel use where fuel amount is <1% of overall FSP fuel use (part of category 1 -
Emissions immaterial; data
fuel used by FSPs)
difficult to obtain
Third-party transportation for upstream-purchased materials and products covered under
Emissions immaterial; low
category 1, and distribution services paid by Vector, other than where data on fuel use was
data quality using spend- and
available (part of category 4 - upstream transportation)
distance-based methods
Use of sold HVAC units (part of category 11 - use of sold products)
Likely immaterial; limited data
availability
WTT emissions from natural gas used at the Ongas BottleSwap depot (part of category 3 - fuel-
Emissions immaterial
and energy-related activities)
Emissions from cash expense claims for air travel, hotels, employee travel in public transport and
Emissions immaterial; data
rental cars (part of category 6 - business travel)
difficult to obtain
7
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
2. Operational boundaries (continued)
Figure 2: Examples of emissions sources across Vector's value chain
Scope 3
Scope 2
Scope 1
Scope 3
INDIRECT
INDIRECT
DIRECT
INDIRECT
Upstream
Vector
Vector
Downstream
The extraction,
Due to the laws
Some of our assets
Distributed and sold
production and
of physics, some
can leak global
gas is burned by
manufacture of
electricity that
warming gases
consumers for their
materials and
Vector distributes
through damage
everyday activities.
services Vector
is lost along the
or age.
purchases from
way. Generation
around the globe
emissions
create emissions
associated with
at source and
this electricity loss
en route to us.
is included in
Vector's footprint.
Scope 2 emissions
also include
electricity
consumption at
Vector's offices,
and substations.
Field service crews
We use fuels in
distribute and
vehicles to deliver
install these
goods, and in
materials on
generators to keep
behalf of Vector.
the power going
This requires
during outages.
transportation.
8 Vector GHG Emissions Inventory Report FY2024
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
Table 4: Emissions calculation methods, data quality and sources
REPORTING
EMISSIONS
CALCULATION
DATA
GWP
DATA QUALITY
CATEGORY
ACTIVITY
METHOD
SOURCE
SOURCE
AND UNCERTAINTY
SCOPE 1
Natural gas
Fugitive
See section 3
FSP records;
distribution
natural
company
fugitive
gas across
records on asset
emissions
Vector's
database
distribution
network
SF6 fugitive
SF6 leaks in
Top-up method
Gas recovery
emissions
switchgear
records; FSP SF6
cylinder records'
log sheets;
nameplate
capacity
amounts
Other fugitive
LPG losses
Top-up method
Service records;
emissions
from venting,
for LPG, CO2
invoices;
HVAC leaks
and HVAC;
inventory lists
(offices,
screening
substations,
method
vehicle fleet),
for HVAC;
and CO2
estimates for
LPG and CO2
Biodiesel
Biodiesel
Fuel-based
Provider records
stationary
used in
method
combustion
generators
Diesel
Diesel used in
Fuel-based
Invoices
stationary
forklifts and
method
combustion
generators
LPG stationary
LPG used
Fuel-based
Invoices
combustion
in forklifts,
method
flaring and
vaporisers
Natural gas
Water and
Fuel-based
Invoices
stationary
space heating
method
combustion
Vehicle fleet
Fuel used in
Fuel-based
Fuel records by
vehicle fleet
method
lease providers
MfE (2024) -
IPCC AR5
Quality-assured data on all leaks by asset and emissions category provided by FSPs. Multiple estimates and assumptions made, as laid out in section 3, lead to medium uncertainty that Vector is continuing to improve. Vector's methodology has been reviewed by GNS Science, and assessed as OGMP 2.0 Level 3 or slightly above.
Records on gas top-ups and recoveries provided by FSPs. Multiple estimations, adjusted over time as data becomes available. Medium level of uncertainty that Vector is working on improving where possible.
Most data on HVAC top-ups available, and when not available annual averages for each inventory item used as specified by MfE. LPG and CO2 use estimated - de minimis. High uncertainty, but emissions <1% of scope 1 and are considered adequate.
Records on litres of diesel used in generators supplied by lease provider monthly. Low uncertainty.
Records on diesel used in forklifts provided by supplier. Remaining diesel use estimated - de minimis. Overall low uncertainty.
Invoices for forklift LPG use. LPG amounts in vaporisers are estimates based on annual actual consumption, while re-valve flaring amounts are estimates based on standard capacity of the sites. Medium uncertainty that is considered adequate as <1% of scope 1.
Usage data sourced from invoices. Low uncertainty.
Records on diesel and petrol use sourced from fuel card data. Low uncertainty.
SCOPE 2
Electricity
Electricity
Location-based
Invoices by
MfE (2024) -
Consumption data in kWh provided by
consumption
use at offices,
method and
retailers; NZECS
IPCC AR5
retailers. Records on NZECS to calculate
from grid
substations,
market-based
website (market-
(location-
market-based approach provided on
(market and
and public
method,
based approach)
based)
NZECS website. Moderate uncertainty
location based)
EV chargers
respectively
NZECS -
from emission factors.
IPCC AR5
(market-
based)
Electricity
Electricity
Location-based
Transpower
MfE (2024) -
Metered data at grid exit point ("GXP")
distribution
losses along
method
and distributed
IPCC AR5
provided by Transpower and distributed
losses
the network
generators
generators. Data at installation control
(ingoing);
points ("ICP") level provided by retailers.
retailers
Some estimations at year-end. Low
(outgoing)
uncertainty.
9
Summary of
Organisational
Operational
Data collection
GHG emissions
GHG emissions
References
emissions
boundaries
boundaries
and quantification
calculation
reductions
and Appendix
and results
2. Operational boundaries (continued)
Table 4 (continued): Emissions calculation methods, data quality and sources
EMISSIONS
CALCULATED USING
REPORTING
EMISSIONS
CALCULATION
DATA
GWP
DATA QUALITY
DATA PROVIDED
BY VALUE CHAIN
CATEGORY
ACTIVITY
METHOD
SOURCE
SOURCE
AND UNCERTAINTY
PARTNERS1
SCOPE 3
C1 - upstream-
Natural gas
Hybrid method
Invoices
DEFRA
Records of gas purchases
76%
purchased
purchased
and average-
(2023) -
sourced from supplier
natural gas
data method
IPCC AR5
invoices. Moderate uncertainty
NZG 2019
on emission factor for overall
purchases as it uses national
- IPCC AR5
average rather than site-
(Kapuni
specific data.
specific)
C1 - upstream-
LPG
Hybrid method
Cost of sales report
Records of LPG purchases
77%
purchased LPG
purchased
and average-
based on supplier invoices.
data method
Moderate uncertainty on
emission factor for overall
purchases as it uses national
average rather than site-
specific data.
C1 - fuel used
Fuel used
Hybrid method
Fuel data provided
MfE (2024) -
Petrol and diesel use on
100%
by FSPs
by FSPs on
by FSPs
IPCC AR5
behalf of Vector shared by
behalf of
DEFRA
each FSP for relevant business
Vector, incl.
areas, in litres. Some data on
(2023) -
WTT
regular and premium petrol
IPCC AR5
combined. Low uncertainty.
C1 - upstream-
Key products
Supplier-
Procurement or FSP
EPDs - IPCC
Records on quantities sourced
6%
purchased
purchased
specific and
data on quantities
AR5
from internal systems. Where
materials and
across Vector
average-data
(by weight or
supplier-specific data was
products
business
method
length) of products
used, uncertainty is lowest.
areas
purchased
For average-data method,
some estimations were made
and secondary data is used;
therefore, uncertainty is
relatively high. More details in
section 3.
C1 - upstream-
All remaining
Spend-based
Procurement spend
Eora MRIO
Spend by supplier sourced
0%
purchased
products
method
data
2017
from internal procurement
other goods
and services
system, emission factor was
and services
purchased
assigned based on supplier's
main business activity. High
uncertainty. More details in
section 3.
C3 - fuel-
T&D,
Average-data
Same invoice
MfE (2024) -
All data based on fuel data
0%
and energy-
upstream,
method
data as fuel and
IPCC AR5
or location-based electricity
related
and WTT
electricity use in
(T&D losses)
consumption data provided
activities
emissions
scope 1 and 2
DEFRA
for scope 1 and 2. T&D
from the
emissions not calculated for
(2023) -
group's
electricity consumption in
IPCC AR5
electricity and
Auckland, as this is covered
(WTT
fuel use
under scope 2 losses.
fuels and
Moderate uncertainty from
electricity)
emission factors.
10 Vector GHG Emissions Inventory Report FY2024
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Vector Limited published this content on 26 August 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on August 26, 2024 at 21:19:03 UTC.