Our emissions reporting boundary is defined by an operational control approach and includes Spark and its subsidiaries.
The majority of emissions factors used in our reporting are sourced from the Ministry for the Environment Guide: Measuring Emissions: Detailed Guide 2020.
Scope 2 emissions are reported using a market-based emissions factor.
Using a location-based emissions factor for Scope 2 emissions would reduce reported Scope 2 emissions for FY21 0.8%, from 20.3 ktonnes CO2e to 19.3 ktonnes CO2e
Over the past year we have continued our programme of network simplification. The programme includes the decommissioning of legacy equipment such as the public switched telephone network (PSTN). Each PSTN switch decommissioned results in a significant electricity saving, which is contributing towards our emissions reduction target and offsetting growth in other areas of our infrastructure. Over FY21 we saw a 5% reduction in electricity use across our exchanges and main network sites.
We also saw an 80% reduction in emissions from business travel, saving around 2,800 tonnes of CO2e. The impacts of Covid-19 restrictions continued from the previous year, and alongside the continuation of many of the good practices adopted through lockdowns, with many of our interactions with customers and other stakeholders moved online. We recorded a significant drop in domestic travel, and international travel reduced to close to zero.
Our fleet is responsible for around 5% of our reported emissions. In the past year we continued to transition our vehicles away from traditional petrol and diesel vehicles to hybrid, plug-in hybrid (PHEV) and pure electric vehicles (EVs). Our focus for FY21 was replacing older vehicles with newer hybrids, including the introduction of Toyota RAV4 hybrids for many of our vehicles used for longer journeys.
We also transitioned all of our pool vehicle fleet at our Auckland Spark City offices to EVs.
At the end of FY21 we had only nine pure petrol or diesel vehicles remaining in our core fleet of 229 vehicles. We have a further 214 vehicles assigned to individuals or subsidiaries.
Over the past year the share of EVs and PHEVs in our core fleet increased to 44%. Non plug-in hybrids make up 52% of the remaining fleet.
Our historic emissions reporting FY16 – FY20
In order to set a SBTi target we refreshed our FY20 emissions inventory and reporting methodology, which has also been applied to our FY21 emissions reporting. We are shifting our emissions reporting processes in-house to provide more frequent internal reporting of our environmental performance to better inform decision making and support progress towards our emissions reduction target.
A variance between our previously reported FY20 emissions is due to updated emission factors, updated measurement protocols and updated assumptions covering waste, water, retail stores and customer electricity use. We include our previous emissions reporting here for reference. Our new science-based emissions reduction target supersedes our previous emissions reduction target, set in 2016, to reduce our emissions by 25% by 2025 against FY16 baseline. Our emissions had been flat between FY16 and FY20. Our new 56% reduction target by FY30 from a FY20 baseline sets a sharper reduction pathway to 2025.