We've rounded up the top 16 deals for electricity and gas in September 2026 from some of the country's biggest energy retailers and included a list of providers offering referral credit.
HINT: AGL, Origin Energy, Powershop, ENGIE, Tango Energy and EnergyAustralia are offering the biggest bill credit in certain states, and there are Finder Rewards up for grabs. Origin Energy's throwing in bonus Everyday Rewards Points, and Red Energy's doing something similar with Qantas points.
1. AGL electricity and gas deals
State-based availability: NSW, VIC, QLD and SA
AGL is offering up to $300 in bill credits for new and moving customers.
If you're in NSW, VIC or SA, you'll get a $150 credit on electricity and $150 on gas. In QLD, it's $200 for electricity and $100 for gas. Either way, it adds up to $300.
The catch is that customers in NSW, SA and QLD need to stay connected for 90 days before the credit lands.
On top of AGL's offer, you can get a $150 digital Visa gift card when you sign up through Finder. That's $100 for electricity and $50 for gas.
And there's more.
AGL also has an electricity plan that bundles in Netflix Standard with ads, valued at $9.99 a month, or $119.88 a year.
You can get up to $15 a month off for bundling your energy and internet plans and $10 a month off for bundling your energy and mobile plans.
Finder's offering a $50 digital Visa gift card for switching to AGL mobile and another $50 for switching to AGL internet.
FINDER REWARDS EXCLUSIVE
Electricity & Gas
ENDS SOON
Get up to $150 from Finder
Purchase an eligible AGL Australia electricity and/or gas plan via the Finder Comparison Service, get $100 for electricity, $50 for gas, or up to $150 when you purchase both, and have your plan(s) successfully connected by 30 November 2026.
T&Cs and limits apply.
Customers in TAS can get $100 in bill credit by signing up to 1st Energy's 1st Quartz plan.
It's split across your first year: $50 after 6 months and another $50 after 12 months.
RACT members can go one better with the RACT Members Only plan, which comes with $150 in bill credit. That's $75 after 6 months and another $75 after 12 months.
In NSW and VIC, you can get up to 5% off your energy usage and supply charges on the 1st Opal plan when you pay your bill on time.
3. Origin Energy bonus offers for electricity and gas
State-based availability: NSW, VIC, QLD, SA and ACT
Origin Energy is offering a $200 electricity bill credit and $100 gas bill credit when you sign up to an Origin Go Variable or Origin Go Variable Ongoing plan right now and stay connected until 13 September 2026. (This offer isn't available in the ACT, but the next one is).
Separately, if you're an Everyday Rewards member, add your number when you sign up for an Origin Everyday Rewards plan to earn up to 10,000 bonus points on your electricity and gas.
You'll get 5,000 points for electricity and 5,000 for gas, while renewing customers can earn 2,500 points per fuel.
You'll also earn 1 Everyday Rewards point for every dollar you pay on your energy bill.
Want to bundle your internet and energy? You can save $10 a month on your NBN plan when you add it to any Origin Energy electricity or gas plan. This offer is available to new internet customers who sign up online.
Momentum Energy is offering a welcome credit to new and moving customers who sign up to its Warm Welcome plan.
The offer gives households in NSW, QLD and SA $50 off their first electricity bill, while Victorian customers can get up to $100 back with $50 off electricity and $50 off gas.
You can get a $200 electricity bill credit when you sign up to a selected residential electricity plan with Powershop.
The credit will be added to your account 90 days after your plan starts.
If you're in NSW or VIC and sign up for gas too, you'll get an extra $100 gas bill credit, bringing the total offer to $300.
7. ENGIE welcome offers
State-based availability: NSW, VIC, SA and QLD
ENGIE's sign-up credits vary depending on where you live.
If you're in VIC, you could get up to $425 in welcome credit on eligible plans - $150 on your first electricity bill and $275 on your first gas bill.
NSW customers can get a $400 welcome credit, with $200 added to their first electricity bill and $200 added to their first gas bill.
Eligible QLD customers can get $150, also on their first bill.
In SA, you can get up to $385 in Join & Stay credit if you're a new or moving customer, applied to your next bill 90 days from the start of your plan.
8. Tango Energy sign-up offers
State-based availability: VIC only
New and moving customers can get a one-off sign-up credit of up to $250 when they switch to Tango Energy's Bonus Booster plan - that's $150 for electricity and $100 for gas.
9. EnergyAustralia sign-up deal
State-based availability: NSW only
NSW customers can get a $250 electricity credit on their first bill when they sign up EnergyAustralia's Flexi Plan.
10. Red Energy Qantas Points offer
State-based availability: NSW, VIC, QLD, SA and ACT
You can earn up to 15,000 bonus Qantas Points when you switch to a Qantas Red Saver electricity and gas plan and pay your first bill in full.
That's 10,000 points for electricity and the remaining 5,000 for gas.
You'll also earn 2 Qantas Points per dollar when you pay your electricity and gas bill on time.
If you're a VIC customer, you can also get up to $200 off your first bill when you sign up to the Living Energy Saver plan. That's $100 off electricity and $100 off gas.
11. Amber Electric offers
State-based availability: NSW, VIC, QLD, SA, ACT
If you're a Commonwealth Bank customer, you can save between $120 and $210 over 12 months with Amber Electric by choosing CommBank as your payment method when signing up.
12. Kleenheat offers
State-based availability: WA only
WA customers can get a $50 welcome credit on gas when they sign up to Kleenheat's Monthly Smart Saver or Standard Form Contract plan.
If you'd prefer, you can choose a $50 Kmart gift card, $50 Target gift card or 10,000 Flybuys bonus points instead.
Eligible plans also come with a free 12-month OnePass membership.
13. CovaU energy offers
State-based availability: NSW and VIC
New customers switching to CovaU can get a bonus gas credit paid in two instalments during their first year on the plan - one after 6 months and another after 12 months.
In NSW, the Freedom gas plan comes with a $120 bonus credit - $60 after 6 months and another $60 after 12 months.
VIC customers on the Super Saver gas plan can get a $100 bonus credit - $50 after 6 months and another $50 after 12 months.
No matter which CovaU plan you choose, you'll also get access to its Rewards program, with discounts and perks at more than 4,500 businesses across Australia, including Coles, JB Hi-Fi and Chemist Warehouse.
14. Nectr sign-up offers
State-based availability: NSW and QLD
Customers on an eligible Nectr Power Perks plan can get a $75 bill credit every 6 months, for as long as they stay on the plan. That's up to $150 a year, claimed through the Nectr My Account portal.
15. Alinta Energy gas deal
State-based availability: WA only
WA customers can get a $100 bonus gas credit when they sign up to Alinta Energy's Fair Go 40 plan.
16. Dodo energy bundling offers
State-based availability: NSW and VIC
Switching your energy and NBN? Dodo offers a $10 monthly credit on all internet plans for customers in NSW and VIC who bundle their utilities under one roof.
Electricity and gas referral deals
Switching to a new energy plan, or know someone who is? Some energy providers offer referral deals that can help you both save money.
Provider
Offer
Origin Energy
Existing Origin customers get a $50 bill credit for every mate they refer - and the friend gets $50 off their first bill payment too.
Diamond Energy
Existing customers in NSW, VIC, QLD or SA can receive ongoing benefits through the Diamond Energy Thr1ve program. Each new customer you refer will receive a $35 sign-up credit. Plus you'll receive a 2% discount on your usage and supply charges for each friend you refer. Refer 5 friends? That's a discount of 10%. You'll continue to receive the discount so long as your referral remains with Diamond and can earn up to 100% total discount.
Red Energy
Existing customers in NSW, VIC, QLD, SA or ACT can choose between a $25 gift card and 1,500 Qantas Points for each new customer they refer to Red Energy.
Nectr
Existing customers in NSW, VIC, ACT and QLD can receive a $50 bill credit for each new customer they refer.
OVO Energy
Existing customers in NSW, QLD, SA and VIC can receive $120 in bill credit (paid in monthly instalments over 12 months) when they successfully refer a friend. Their referral will also receive $120 bill credit. There's no limit to how many friends you can refer.
Lumo Energy
New customers in VIC or SA can receive a $25 gift card when they quote their friend's Lumo Energy account number on sign-up. Best of all, your friend will get a $25 gift card too.
CovaU Energy
Existing customers in NSW, VIC, SA, TAS, ACT, and QLD can receive a $50 EFTPOS gift card or a $50 account credit for each new customer they successfully refer to CovaU Energy. The referred customer will also receive the same reward as a credit or an EFTPOS gift card.
GloBird Energy
Existing GloBird customers can get $50 account credit on the next bill after their friend pays their first bill. The referred friend will also receive the $50 credit on their second invoice.
Arcline Energy
New customers in VIC can receive a $50 bill credit when they quote an existing member's account number during sign-up. Once the new customer has signed up successfully, the referrer will also get a $50 credit on their next Arcline bill.
Sumo Energy
Existing customers are eligible to receive a $50 credit when they refer a new customer to Sumo who has not had an account with Sumo in the previous 6 months. The new customer must activate and keep an electricity account with Sumo for at least 30 days.
Amber Electric
Existing Amber customers get a $10 bill credit each month for 12 months, adding up to $120 for every new referral to Amber Electric. Each referral will also get $120 off their bill over 12 months.
Flipped energy
Existing Flipped customers get a $30 bill credit, for every new referral. Each referral will also get $30 off their bill.
How do I choose the best energy sign-up offer?
Here's a quick look at the different types of offers you'll come across and what they actually mean.
Bill credit. This is the simplest one. You get a set amount, like $200, taken off your bill, either your first one or after you stick with the energy provider for a certain number of months. As long as you meet the conditions, you'll see the amount knocked off your bill.
Guaranteed discount. Instead of a one-off bonus, you get an ongoing discount on your usage and/or supply charges for a set benefit period, often 12 months.
Conditional discount. This only applies if you meet certain conditions, usually paying your bill on time or setting up direct debit.
Rewards points. Some providers offer Everyday Rewards or Qantas Points instead of a bill credit. That can be worthwhile if you're already collecting points, but it's not always easy to compare with cash as the value depends on how you redeem them.
Dual-fuel or bundling bonus. Some providers will throw in an extra credit if you sign up for both electricity and gas, or bundle another service, like internet. However, it's still worth comparing plans separately. You might find it's cheaper to go with different providers rather than bundle everything together.
What should I look out for before signing up?
A sign-up offer is always exciting, but you also need to check other things.
A $200 credit isn't much of a win if you're paying usage and supply charges every month. Over a year, a plan with better rates can easily save you more than a one-off bonus, unless you're someone who regularly switches providers to chase the next deal.
It's also worth checking when you'll actually get the credit. Some providers apply it to your first bill, while others make you wait a few months. If you move house or switch plans before then, you could miss out altogether.
Keep an eye on any conditional discounts too. "Pay on time" sounds straightforward, but missing just one payment could mean losing the discount. Make sure you know exactly what's required.
Don't skip the fine print either. Most sign-up bonuses are only for new customers, plus the offer can vary depending on which state you live in. The credit advertised elsewhere might not be available where you are.
Frequently asked questions
In most cases, you don't need to do anything beyond signing up for the offer.
Once you're on the plan, the credit or discount is usually applied automatically to your bill, or bonus points are added to your rewards account.
If it's a conditional discount, such as one for paying on time, you'll need to make sure you meet the requirements each month to keep getting the benefit.
Your power won't go off when you switch energy providers. The change happens behind the scenes, so your electricity or gas keeps running as normal.
The switch usually takes a few business days to process, although the exact timing can vary.
You'll receive a final bill from your old provider, then your new provider will take over billing.
Usually not. Most offers are for new customers only.
If you're already with a provider, it's worth calling to ask what they can do to keep you, or comparing what you'd get by switching to a new provider entirely.
Yes, you can. As long as the electricity or gas account is in your name and you're responsible for the bill, you can switch and claim a sign-up offer like any other customer.
Moving usually means opening a new account at your new address, which can reset or cancel a bonus you haven't received yet.
If you're mid-way through an offer and planning a move, check whether the credit carries over or whether it's worth timing your switch so the bonus lands first.
Mariam Gabaji is a journalist with 13 years of experience, specialising in consumer topics like mobile services and energy costs. Her work appears in the ABC, Yahoo Finance, 9News, The Guardian, SBS, 7News, A Current Affair and Money Magazine. Mariam holds a Bachelor of Arts in Journalism and was a finalist for the 2024 and 2025 IT Journalism Award for Best Telecommunications Journalist.
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