My GWW and credit card payments will be offline from 8pm Saturday 9 May to 1pm Sunday 10 May 2026 while we complete scheduled updates. During this time, you can still pay your bill using BPAY or Post Billpay. Call 13 44 99 for billing support on Sunday between 9am-5pm, or to report a fault or emergency anytime - 24/7.
Billing updates and customer privacy
We’re here to help with billing issues and potential privacy incidents. Learn more.
As part of an enforceable undertaking, we’re improving how we manage billing to better support you. Learn more.
Important customer update
Billing updates and customer privacy
We’re here to help with billing issues and potential privacy incidents. Learn more.
As part of an enforceable undertaking, we’re improving how we manage billing to better support you. Learn more.
Greater Western Water strives towards net zero emissions by 2030
20 December 2022
Media Release
Almost 1350 new solar panels are being installed across four of Greater Western Water (GWW) sites as part of its commitment to achieve net zero emissions by 2030.
The solar panels are being installed this month at the Altona Treatment Plant and Werribee Recycled Water Plant and early next year at the Ballan Road Tank Site and Little River Booster Pump Station.
When fully completed in early 2023, the panels will significantly increase the use of renewable energy, producing over 1,000 MWh of renewable energy per year, which will predominately be used back on the sites.
The new panels will double GWW’s renewable energy generation capacity, with 1600 existing solar panels at the Melton Recycled Water Plant (RWP) and Altona Treatment Plant already producing 1,000 MWh of renewable energy per year.
The doubling of this capacity to 2,000 MWh is enough electricity to power 450 homes for a year.
GWW Managing Director, Maree Lang said the corporation was committed to increasing the use of renewable energy and investing in innovative energy solutions to achieve net zero emissions by 2030.
“Climate change is having an impact on how we operate and to help tackle these challenges we are embracing a low carbon future.
“Our first corporate strategy includes commitments to invest in innovation and develop a zero emissions mindset, so that climate change is considered in of our all decision-making.
”We have a responsibility to deliver real change towards a sustainable future for Melbourne’s west.”
Other initiatives underway include buying renewable electricity from a large-scale solar farm in Ouyen, amounting to around one-third of our total electricity use and adding high strength organic waste, that would otherwise be sent to landfill, to our anaerobic digester at the Melton RWP to increase our renewable energy generation.
Visit GWW’s website to learn more about GWW’s commitment to achieve net zero emissions by 2030.