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NPI+ is a net zero operation. This is achieved by minimising carbon emissions associated with office and transport operations by relevant technological means and offsetting remaining carbon emissions by purchasing carbon offsets. Estimation of home and business Greenhouse Gas (GHG) emissions are shown below:

1. The Australian Greenhouse Calculator was used to estimate carbon emissions in 2019 and adjusted for changes in 2024.

2. Since 2019, electric vehicle transportion has conservatively reduced the original 8.7 tonne vehicle transport emissions by a third.

3. Since 2019, there has been minimal air travel so the original 0.11 tonnes has been reduce to a third.

4. Since 2020, solar battery storage and electric heating has conservatively quartered this contribition from the original 0.36 tonnes.

5. More efficient appliances and solar battery have reduce this impact by half since 2019.

6. Since 2018, buying less processed and carbon intensive food has conservatively reduced this contribution by 33% from the original 10.4 tonnes.

7. Since 2021, more food waste has been processed by composting has increased 20%.

8. Emissions are adjusted upwards by 20% to account for calculation uncertainties and then rounded up to the nearest whole number.

9. The emissions are offset using carbon credits from Greenfleet, a respected source of biodiverse carbon offsets since 1997.

10. Cost of Greenfleet carbon offsets is $18 per tonne.