WA gas retailer comparison 2026: Kleenheat, Alinta, AGL, Origin, ENGIE

Western Australia's gas retail market is genuinely competitive — unlike electricity, where Synergy is the only residential retailer on the SWIS network, residential gas customers in Perth can choose from several retailers and switch freely.

If you've been with Kleenheat since you moved in without ever shopping around, there's a reasonable chance you're on their standing offer and overpaying. Here's what each retailer offers and how to compare.

Who can switch WA gas retailers

WA gas deregulation applies to customers connected to the ATCO gas distribution network in the Perth metro area and surrounding regions.

Customers in areas where gas is not networked (Pilbara, Kimberley, most of the Wheatbelt) are typically on LPG from Elgas, Kleenheat, or Origin — LPG supply competition operates differently from networked gas retail.

If you receive a gas bill from a retailer with a meter reading (rather than a cylinder service), you're on the networked gas system and can switch.

The main residential gas retailers in WA

Kleenheat (Wesfarmers)

Kleenheat is the largest WA gas retailer by customer count. As the legacy incumbent, they supply a high proportion of WA households — many of whom have never actively chosen them, having inherited the connection.

Standing offer vs market offer: Kleenheat's standing offer is their default rate; customers who haven't actively signed a market contract are on it. Their market offers are usually cheaper than the standing offer, available with 12-month contract terms.

Typical structure: Fixed daily supply charge (around $0.70–$0.90/day in 2026) plus per-MJ usage rate that often steps up after a threshold (e.g., cents/MJ for first 4,660 MJ/quarter, higher rate above).

Contract terms: Market offers usually include a pay-on-time discount (e.g., 15% off usage) which effectively lowers the rate if you pay by the due date. Miss the deadline and the discount evaporates.

Noteworthy: Kleenheat's brand is well-known in WA; their customer service is Perth-based.

Alinta

Alinta is the second-largest WA residential gas retailer. As a company historically headquartered in Perth (now national), Alinta is a genuine WA player rather than an eastern-states competitor entering the market.

Pricing structure: Similar to Kleenheat — daily supply charge plus usage rate with potential step-up. Alinta often has competitive market offers and sometimes runs switching promotions.

Contract terms: Typically 24-month market offers with early exit fees. Pay-on-time discounts are common.

Standing vs market: Like Kleenheat, Alinta distinguishes between their standing offer and market offers — always check which you're being quoted.

Customer service: Perth-based.

AGL

AGL entered WA gas retail and competes on market offer pricing.

Pricing structure: Daily supply charge plus per-MJ usage. AGL is a national company — their WA-specific tariffs are worth comparing but they're less likely to offer WA-specific promotions.

Points to check: AGL's WA rates have varied; compare their current market offer rate against Kleenheat and Alinta at the time of switching rather than relying on historical comparisons.

Contract terms: Usually 12–24 month market contracts.

Origin

Origin is another eastern-states retailer present in WA gas retail.

Pricing structure: Similar supply charge + usage rate model.

Consideration: Origin offers GreenPower gas options (carbon offset) for customers wanting lower-emissions gas supply — worth checking if that's a priority.

ENGIE (formerly Simply Energy)

ENGIE is a French multinational that operates in the WA gas market, sometimes with competitive market rates especially for households with newer connections or those actively shopping around.

How to compare WA gas retailers

Retail gas pricing is more complex than it first appears because of:

1. Daily supply charge — a fixed cost regardless of consumption. At $0.75/day, that's $274/year before you use a single MJ of gas.
2. Usage rate structure — some retailers have flat rates; others have tiered rates that increase above a seasonal threshold.
3. Pay-on-time (POT) discounts — headline rates are often before POT discount. A "12% POT discount on usage" sounds good but requires you to pay every bill on time to realise it.
4. Discount terms — some discounts only apply in the first contract year, then revert to a higher rate.
5. Early exit fees — breaking a 24-month contract early may cost $50–$100+.

The only accurate comparison is your actual annual cost at each retailer's current rates, based on your consumption (in MJ/year — on your gas bill).

Where to compare: The WA Government's Energy Made Easy portal (energymadeeasy.gov.au) allows gas plan comparison for WA addresses. Enter your annual MJ consumption and it returns cost estimates from each retailer for their available plans.

Typical WA residential gas use

As a reference point:

| Household type | Estimated annual gas use | |---|---| | No gas hot water, gas cooking only | 15–25 GJ/year | | Gas hot water + cooking | 35–50 GJ/year | | Gas hot water + cooking + space heating | 50–80 GJ/year | | Gas ducted heating, 4+ bedroom home | 80–120+ GJ/year |

At typical WA market rates, gas supply costs a residential household with hot water and cooking approximately $600–$1,000/year. Homes with ducted gas heating can pay $1,200–$2,000+ depending on usage.

Should you switch gas retailers or switch away from gas?

This is the bigger question behind gas retailer comparisons.

For households with:

• Gas ducted heating: Consider whether a heat pump / reverse-cycle split system alternative is viable. Gas heating operating costs depend on current gas rates; heat pump alternatives depend on electricity tariff. The economics shift as gas prices rise and electricity (particularly solar) becomes cheaper.
• Gas hot water: Heat pump hot water systems on solar tariff can be significantly cheaper to run than gas, particularly on Midday Saver at 8.85c/kWh super off-peak.
• Gas cooking only: Gas cooking is lower consumption than heating — the annual cost is modest, and many households prefer the cooking experience. Switching away from gas cooking is typically not financially compelling unless you're removing gas connection entirely.

A household that eliminates gas connection entirely (heat pump heating, heat pump hot water, induction cooking) removes the daily supply charge entirely — worth over $250/year regardless of usage rates.

How to switch gas retailers

1. Compare plans on energymadeeasy.gov.au using your annual MJ consumption from your last bill
2. Contact the new retailer and sign up for their market offer
3. The new retailer handles the switch — you don't need to contact ATCO (the network) or your old retailer; the new retailer manages the transfer
4. Transfer timeline: Usually 5–10 business days for the switch to process; your supply is not interrupted
5. Keep your current direct debit until you receive your final bill from the old retailer

There are no connection or disconnection fees for switching between retailers on the same ATCO networked gas supply.

Gas retail rates change frequently and are subject to contract terms. Always verify current rates directly with retailers or via Energy Made Easy (energymadeeasy.gov.au) using your actual annual consumption. Prices quoted are indicative of mid-2026 market conditions.