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Cheapest electricity in Adelaide, SA
Who is the cheapest electricity supplier in Adelaide, SA?
Currently, the cheapest electricity provider in Adelaide on our database is GloBird Energy.
What is the cheapest electricity plan in Adelaide, SA?
GloBird Energy’s GLOSAVE is currently the cheapest electricity plan in Adelaide on our database.
For other cheap Adelaide electricity plans, please click on the ‘more’ button on the table below.
Below are the current cheapest single-rate electricity plans in our database on the SA Powers network in Adelaide, SA.
Provider | Plan name | Est. annual cost (inc. all discounts) | Est. annual cost (ex. conditional discounts) | Reference price comparison (Basic Plan Information) |
|---|---|---|---|---|
GloBird Energy | GloSave | $1,758 | $1,812 | 21% less |
Who is the cheapest electricity provider with the highest rating in Adelaide, SA?
Lumo Energy is the 2026 winner of our Most Satisfied Customers award for SA electricity providers and one of the cheapest providers on our database in Adelaide.
Cheapest gas in Adelaide, SA
Who is the cheapest gas supplier in Adelaide, SA?
The cheapest gas provider in Adelaide on our database currently is GloBird Energy.
What is the cheapest gas plan in Adelaide, SA?
GloBird Energy's BOOST plan is currently the cheapest gas plan in Adelaide on our database.
For more cheap Adelaide gas plans, please click on the ‘more’ button on the table below.
Below are the current gas plans in our database on the Australian Gas Network in Adelaide, SA.
Provider | Plan name | Est. annual cost (inc. all discounts) | Est. annual cost (ex. conditional discounts) | Basic Plan Information |
|---|---|---|---|---|
GloBird Energy | BOOST Residential(AGN SA)-AGN SA | $936 | $936 |
Who is the cheapest gas provider with the highest rating in Adelaide, SA?
AGL took home first place in our 2026 Most Satisfied Customers award for SA gas providers and is one of the cheapest brands on our database in Adelaide.
How do we calculate the cheapest electricity and gas plans in Adelaide, SA
Canstar’s comparison platform works out the annual estimated cost of each Adelaide electricity and gas plan on our database in real-time. These are the variables impacting the final figures:
- Usage rates: The rate (in c) charged for each kWh of electricity or megajoule (MJ) of gas used.
- Supply rates: Fixed rates paid each day (in c) to stay connected to the grid (for electricity) or gas mains (for gas).
- Estimated annual usage: The estimated annual energy usage of a residential customer living in the SA Powers Network (for electricity) and the Australian Gas Network (for gas). This figure currently sits at 4,000kWh for electricity customers on a single rate tariff and 14,800 MJ for gas customers.
- Discounts: Guaranteed discounts are calculated into the final figures, including any benefit periods (the limited period the discount applies to).
For every electricity plan, its annual estimated cost is measured against the state’s reference price. This difference is measured as a percentage difference in our journey’s results.
This SA reference price, also known as the default market offer (DMO), is a benchmark price set by the Australian Energy Regulator (AER) every July 1st, preventing customers from paying too much to keep the lights on. Currently, SA’s reference price sits at $2,301/year.
On the results page, every plan is sorted in ascending order, from the cheapest to the most expensive. Keep in mind that the results are restricted to three tariffs, which essentially break down how you’re charged for your energy use:
- Single-rate tariffs for electricity plans, with unchanging rates regardless of the time electricity is used.
- Flat-rate tariffs (same as a single-rate tariff) and block rate tariffs (gas use is broken down into ‘blocks’, each one attracting a different rate) for gas plans.
Other tariffs in Adelaide include:
- Demand tariff (electricity only): An extra ‘demand’ charge followed by standard supply and usage charges. To apply for a demand tariff, you will need a smart meter installed.
- Controlled load tariff (electricity only): Energy-demanding appliances can be metered separately at a lower rate. However, you must restrict its operating hours. To access this tariff, you must also have a smart meter installed.
If you’re interested in other tariff types and their rates (if applicable), you can click on ‘view rates’.
If not, you can compare energy plans on our database against your existing plan’s tariff, followed by your latest gas and electricity bill information:
- On our journey’s results page, select ‘billing information’.
- Choose the tariff type that corresponds with your current plan.
- Pre-fill your bill information in the relevant fields.
- Compare energy plans in SA based on your existing tariff.
If you’re keen to have a broader view of the entire SA energy market, you can pay a visit to our hub page dedicated to comparing SA energy plans.
What to consider with the cheapest electricity and gas plans in Adelaide, SA
Bundled electricity and gas discounts
Providers selling both electricity and gas plans typically offer bundled discounts. However, you could potentially save more by signing up for an electricity and gas plan from two separate providers. Always check which is the cheaper option first.
Your electricity and gas use
When you use the most electricity
- If you use more electricity during off-peak hours, a time-of-use tariff or demand tariff will be cheaper in the long run.
- If you use more electricity during peak hours, a single rate tariff will save you more.
- If you have an energy-intensive appliance (e.g. a hot water system), a controlled load tariff can meter that appliance separately at a cheaper rate, but expect limited hours of operation.
How much electricity or gas you use
- If you don’t use a lot of electricity, lower supply rates will save you more over time.
- If you don’t use a lot of gas, a flat rate tariff will be cheaper than a block rate tariff, where low volume use incurs cheaper usage rates.
For a quick overview, you can estimate your potential savings from switching to the cheapest electricity plan (on our database) using our electricity bill calculator.
Contract length and expiries
There are two energy contract types — ongoing and contracts with a fixed contract length.
Ongoing plans have no expiry, meaning customers are free to switch providers or plans at any time.
A plan with a fixed contract length has a set expiry date, where terminating it prematurely will incur penalty fees (e.g. exit fees).
Once a plan expires, a provider will typically transfer you to its standing offer (for electricity) or standing contract (for gas).
Standing offers and contracts in SA take after the state’s reference price. Generally, this reflects the maximum price a retailer is comfortable with charging their customers, and does not come with any value-added features (discounts).
If you find yourself moved to a standing offer or contract, you may pay hundreds of dollars more annually when compared to your old plan.
Before signing up for any plan, you can inspect its contract length under the ‘contract details’ section on its BPID. This is accessible on our journey’s results page by clicking the ‘basic plan information’ or ‘plan details’ prompt under each plan.
If the plan you’re interested in has a fixed contract length, set a calendar reminder to switch energy plans days before its expiry date.
Variable vs fixed rates
Almost all energy plans in the market share a variable-rate structure. That means providers are permitted to change them at any time— this applies to plans that are ongoing or with fixed contract lengths.
However, you must be notified in writing at least five business days before any changes take place.
If the cheapest electricity or gas plans in Adelaide have variable rates, their annual estimated costs may rise. That’s why it is important to stay on top of all written communications from your retailer (e.g. mail, emails).
In comparison, fixed-rate plans lock in rates for a specified contract length. However, this rate structure is quite rare.
An energy plan’s rate structure is clearly outlined under the ‘billing and price details’ section on its BPID.
Hidden fees
Before hastily switching to a cheaper plan, scrutinise your existing plan’s BPID for any hidden fees (e.g. exit fees) — you do not want to be caught off guard by additional charges.
