Sumo Energy customers can reach support in several ways. Phone, email, online forms, and the My Account portal are all available. Each option connects you with Sumo Energy customer service.
Sumo Contact Number
The main Sumo contact number is 03 9102 8400. Use this line for billing, account questions, and other general enquiries. It is the quickest way to reach the support team.
For emergencies, call your local distributor. In life-threatening situations, call 000.
Other Contact Numbers
Sumo also provides numbers for specific needs:
- Financial assistance: 03 9103 2920
- Interpreter services: 03 9102 8427
- National Relay Service: for customers who are deaf, hard of hearing, or speech impaired
These lines connect customers with the right team.
Sumo Energy Email and Online Form
Customers can send enquiries through Sumo Energy email. This method is useful for billing, payments, or account updates. It also creates a written record.
An online form is also available on the Sumo website. This form allows customers to send questions directly to support staff.
Using My Account
The My Account portal is open at all times. Customers can log in and manage their accounts without calling.
Through My Account you can:
- Make payments
- Set up direct debit
- Update account details
- View bills and balances
New customers can register online. Current customers log in with their account details.
Interpreter and Accessibility
Customers who prefer another language can use the interpreter service on 03 9102 8427.
The National Relay Service is available for customers who are deaf, hearing impaired, or speech impaired. These services make Sumo Energy contact accessible to all customers.
Complaints and Feedback
If you’re not happy with your service you can lodge a complaint by phone, email or online form. Each case is reviewed by the team and updates are provided until the matter is resolved.
Do You Need Help with Sumo Energy?
Moving house can make energy account management stressful. Move-in Connect helps customers compare plans, book services, and speak with partnered retailers.
We are not partnered with Sumo Energy, so we cannot compare their plans or arrange a connection with them. However, you can still choose from many other available retailers. Our team will guide you through the best options and ensure your services are connected on time.

