Sumo Power is available in New South Wales, Victoria, Queensland (energy only), South Australia (energy only) and the ACT (energy only).

CHOICE Expert Rating: 52% (average 67%)
Green electricity score: 35% (average 49%)
Complaints score: 99% (average 98%)
Call response score: 27% (average 61%).

Green Electricity score

This score is based on the company's Green Electricity Guide star rating.

Complaints score

This score is based on the number of complaints measured as a proportion against the number of customers. The higher the percentage, the better. Data via the Australian Energy Regulator – updated annually.

Call response score

This score is based on how likely the retailer is to answer a call within 30 seconds. The higher the percentage, the better. Data via the Australian Energy Regulator – updated annually.

February 2022 – Sumo pays penalties totalling $500,000 after alleged wrongful disconnections – Sumo Power Pty Ltd and Sumo Gas Pty Ltd have paid penalties totalling $500,000 for arranging the alleged wrongful disconnection of 143 Victorian energy customers on 14 December 2020.

February 2022 – Power retailer fined for cutting off 'wall of shame' clients in disconnection blitz – Power and gas retailer Sumo Energy ran a disconnection blitz in 2020 during which staff allegedly taped the names of 1500 customers who had missed bills to a "wall of shame" and cut off 143 of them without proper warning.

June 2021 – Sumo Power to pay $1.2 million for misleading electricity plans – The Federal Court has declared by consent that Sumo Power Pty Ltd (Sumo) made false or misleading representations in selling electricity plans to Victorian consumers and ordered it to pay $1.2 million in penalties, and to pay consumer redress to affected consumers.

June 2021 – Sumo Power misled 7700 customers, to refund $800,000 – Electricity retailer Sumo Power has admitted to misleading 7700 Victorian consumers about its electricity price plans and must pay $1.2 million in penalties and $800,000 back to its customers.

December 2020 – 'Kick in the guts': Hundreds of vulnerable Australians cut from electricity before Christmas – Hundreds of Victorian families who lost income through the state's harsh lockdowns have been disconnected from their electricity supply as they prepare for a COVID-afflicted Christmas.

August 2020 – Sumo Power allegedly misled consumers about electricity pricing – The ACCC has instituted proceedings in the Federal Court against Sumo Power Pty Ltd (Sumo) alleging it made false or misleading representations to Victorian consumers in relation to its electricity plans.

June 2019 – ACMA hits Sumo Power with fine for breaching telemarketing laws – The telecommunications regulator, The Australian Communications and Media Authority, continues to clamp down on unlawful telemarketing and breaches of spam laws, with electricity, gas and Internet provider Sumo Power the latest company to be hit with a penalty for infringing the law on telemarketing.

February 2019 – Shopping around on power could save Victorian consumers $2000 a year – Some Victorians can still save more than $2000 by shopping around for electricity but new research shows the gap between the cheapest and most expensive retail offers is narrowing.