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Updated · CDR plan data

Gas Plans in Lewiston 5501

What’s the cheapest gas plan in Lewiston?

Cheapest plan, on average

The cheapest gas plan currently available in Lewiston 5501, assuming generic and average household usage and eligibility, is Residential Seniors (No Exit Fee) New To AGL at $833/yr from AGL, as of 4 November 2026. 59 residential plans are compared below.

#1 cheapest · generic estimate
AGL
Residential Seniors (No Exit Fee) New To AGL
$833/yr

This is a generic annual assessment only, and assumes:

#2
Residential Seniors (No Exit Fee) New To AGL
AGL · Stepped rate
$833+$0/yr
#3
Residential Seniors (No Exit Fee)
AGL · Stepped rate
$833+$0/yr

That is the generic ‘best-priced’ plan answer. The actual best-priced plan for you may well be different.

As of 4 November 2026. 59 residential plans compared. Bill Hero takes no commission from any retailer, so this ranking can’t be bought. Methodology

But you’re not average, are you?

There are 83 gas plans available in Lewiston, South Australia, and only one of them is the best-priced for you.

The generic 'best plan' assumes a reference consumption level, a generic load curve extrapolated annually, excludes incentives and welcome credits, and excludes solar, battery and EV from the ranking. Your bill has the real information - upload it here and I'll run a personalised comparison based on your unique combination of actual usage, tariff type and location. It takes about a minute to find out what's really the best plan for you.
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Review all gas plans in Lewiston

Compare 83 gas plans available in Lewiston, South Australia. Gas network: Australian Gas Networks.

Network
Australian Gas Networks
Total Plans
83
Residential
59
Business
24
Updated
4 Nov 2026

By household size

Average gas bill in Lewiston by household size

In Lewiston 5501, estimated annual costs by household size are 1 to 2 people (15,000 MJ a year): $702/yr cheapest, $799/yr average; 3 people (20,000 MJ a year): $833/yr cheapest, $961/yr average; 4 or more people (30,000 MJ a year): $1,096/yr cheapest, $1,284/yr average.

1 to 2 people
15,000 MJ a year
Cheapest
$702
AGL · Residential Seniors (No Exit Fee)
Average of all offers
$799
3 people
20,000 MJ a year
Cheapest
$833
AGL · Residential Seniors (No Exit Fee)
Average of all offers
$961
4 or more people
30,000 MJ a year
Cheapest
$1,096
AGL · Residential Seniors (No Exit Fee)
Average of all offers
$1,284

Usage bands are indicative household sizes, not a measurement of any particular home. Costs are the plans’ own published annual estimates at each usage.

You’re not average, are you?

These prices are based on average consumption benchmarks.

Your actual consumption will be higher or lower than that, which influences what the best-priced plan for you is. The only way to find out for real is to do a proper bill analysis based on your actual consumption.

Upload your bill now for a quick and free one-time assessment, or subscribe, and Bill Hero will automatically analyse and compare every bill for you for a full year and help you switch whenever you can save.

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All plans

Compare every gas plan in LEWISTON

Annual cost at 20,000 MJ/yr with the default load curve. Cheapest first. Showing 8 of 59 plans.

AGLResidential Seniors (No Exit Fee) New To AGLStepped rateSwitch83.53$833
AGLResidential Seniors (No Exit Fee) New To AGLStepped rateSwitch83.53$833
AGLResidential Seniors (No Exit Fee)Stepped rateSwitch83.53$833
AGLResidential Smart Saver (No Exit Fee) New To AGLStepped rateSwitch87.56$872
AGLResidential Smart Saver - Westpac (No Exit Fee)Stepped rateSwitch87.56$872
AGLResidential Smart Saver - Velocity (No Exit Fee)Stepped rateSwitch87.56$872
AGLResidential Smart Saver - Velocity New To AGLStepped rateSwitch87.56$872
AGLResidential Smart Saver Westpac New to AGL(No Exit Fee)Stepped rateSwitch87.56$872
#1 · AGL
Residential Seniors (No Exit Fee) New To AGL
$833
Stepped rate83.53c/day
#2 · AGL
Residential Seniors (No Exit Fee) New To AGL
$833
Stepped rate83.53c/day
#3 · AGL
Residential Seniors (No Exit Fee)
$833
Stepped rate83.53c/day
#4 · AGL
Residential Smart Saver (No Exit Fee) New To AGL
$872
Stepped rate87.56c/day
#5 · AGL
Residential Smart Saver - Westpac (No Exit Fee)
$872
Stepped rate87.56c/day
#6 · AGL
Residential Smart Saver - Velocity (No Exit Fee)
$872
Stepped rate87.56c/day
#7 · AGL
Residential Smart Saver - Velocity New To AGL
$872
Stepped rate87.56c/day
#8 · AGL
Residential Smart Saver Westpac New to AGL(No Exit Fee)
$872
Stepped rate87.56c/day

FAQ

Frequently asked questions

What is the cheapest gas plan in Lewiston 5501?
Residential Seniors (No Exit Fee) New To AGL from AGL at 4.69c/MJ, estimated $833/year at 20,000 MJ. Compare all 83 plans above.
Which gas distributor serves Lewiston 5501?
Lewiston 5501 is served by Australian Gas Networks. The gas distributor maintains the pipes; your retailer is separate and can be switched without changing supply.
How do I switch gas retailers in Lewiston?
Choose a plan on this page and click Switch. Bill Hero manages the switch for you — there's no interruption to supply.
How many gas plans are available in Lewiston 5501?
There are currently 83 gas plans available in Lewiston 5501, South Australia on the Australian Gas Networks gas network.
How often are gas prices updated?
Bill Hero updates plan data daily from the Consumer Data Right (CDR) energy API. Prices reflect the latest published rates from each retailer.
What is the average gas bill in Lewiston by household size?
In Lewiston 5501, estimated annual costs by household size are 1 to 2 people (15,000 MJ a year): $702/yr cheapest, $799/yr average; 3 people (20,000 MJ a year): $833/yr cheapest, $961/yr average; 4 or more people (30,000 MJ a year): $1,096/yr cheapest, $1,284/yr average.

Methodology and data

Plan rates and annual cost estimates are read from the Consumer Data Right (CDR) energy plan register, which every retailer is required to publish, and refreshed daily. This page lists 59 residential gas offers serving Lewiston 5501; last refreshed 4 November 2026.

No regulated reference price is published for gas on this network, so no percentage comparison is shown.

Bill Hero takes no commission, no referral fee and no placement payment from any retailer. Plans are ranked only by estimated annual cost, so the ordering on this page cannot be bought.

Source: Consumer Data Right (CDR) Energy Plan Data · Full methodology

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