The table below provide the relative intensity of emissions involved in delivering both our water and wastewater services to our customers:
| Service area
|Operational GHG emissions per Ml of treated water||273.0||141.2||24.6
|Operational GHG emissions per Ml of waste water treated||303.1||225.4||135.3|
In the penultimate year of this current AMP period, we’re also starting to explore options for developing our future carbon reduction targets beyond our current 34 per cent reduction on 1990 levels by 2020. These may include setting more broad objectives around increasing renewable electricity generation, not only from sludge but also other sources such as solar photovoltaics (PV). We’ll also look to broaden our energy targets to include heat as well as electricity.
*Scope 1 emissions refer to greenhouse gas emissions associated with the operation of our assets. Scope 2 emissions are emissions associated with the use of grid electricity.
#From October 2016 our net operational emissions account for the grid electricity we imported being 100% REGO accredited renewable. We use the government’s REGO (renewable energy guarantee of origin) accreditation scheme to demonstrate that the electricity we consume is from a renewable source.
During 2017/18 we generated and used 293GWh of renewable electricity, most of which (286GWh) came from the treatment of sludge - our best ever performance. This is set to increase as we expand our use of THP and the addition of our new Advanced Energy Recovery process. Increasing the amount of renewable energy we generate from sludge is helping to reduce our carbon emissions, reduce our reliance on grid electricity and make even better use of a valuable resource. Click on the case study below to find out more:
We’ll continue to actively engage with our employees on our three clear and simple energy themes:
- Using less energy.
- Paying less for energy.
- Make more of our own renewable energy.