Is this an estimate or a quote?

An estimate: supply charge plus usage at the stated annual kWh from the rates the retailer publishes to the Australian Energy Regulator, GST as published, conditional discounts, controlled load and solar feed-in left out. The retailer's own quote at your address and usage is the price you pay.

Electricity · South Australia · SA Power Networks network · from the regulator's feed

1st Energy 1st Emerald - Time of Use

1st Energy's 1st Emerald - Time of Use on the SA Power Networks electricity network (South Australia) costs an estimated $139 a month for a household using 4,000 kWh a year, 3rd cheapest of 241 published plans on the network at that usage (median $172). Time-of-use rates: peak 41.30c, off-peak 23.90c, shoulder 12.50c per kWh, 132.50c a day supply. At the regulator's 4,000 kWh benchmark it comes to $1,672 a year against the DMO 2026-27 reference price of $2,334, $662 below it. Read from the retailer's rates as published to the Australian Energy Regulator on 8 Nov 2026 (retailer's record last updated 27 Aug 2026). GST as published; conditional discounts, controlled load and feed-in excluded from the estimate.

market offertime of useGo to 1st Energy

In one line

1st Energy's 1st Emerald - Time of Use costs an estimated $139 a month, $1,672 a year, for a typical household using 4,000 kWh a year on the SA Power Networks network (South Australia), 3rd cheapest of 241 published plans, priced at peak 41.30c/kWh 6am to 9.59am every day and 4pm to midnight every day, shoulder 12.50c/kWh 10am to 3.59pm every day, off-peak 23.90c/kWh midnight to 5.59am every day plus 132.50c a day with solar feed-in 44.00c/kWh, as read from the regulator's feed on 8 Nov 2026. The cheapest is iO Energy's Sustainable Home (Electrify) at $129 a month. See iO Energy's plan.

Go to 1st Energy

Cheapest on the SA Power Networks network today

The lowest published estimates at 4,000 kWh a year, one retailer each, as read from the regulator's feed on 8 Nov 2026. Ranked on estimated cost alone; nothing is promoted.

Cheapest · our recommendation
iO Energy Sustainable Home (Electrify)
4,000 kWh a year on SA Power Networks · price read 2026-11-08
$129/mo
$1,552/yr
Go to iO Energy
Alternative · 3rd cheapest
1st Energy 1st Emerald - Time of Use
4,000 kWh a year on SA Power Networks · price read 2026-11-08
$139/mo
$1,672/yr
Go to 1st Energy
Alternative · 7th cheapest
Globird Energy FULLHOUSE Residential (Flat Rate CTL Load)-SAPN
4,000 kWh a year on SA Power Networks · price read 2026-11-08
$144/mo
$1,732/yr
Go to Globird Energy

What it costs

Supply charge plus usage at each annual figure, from the published rates. Your retailer's quote is the price you pay.

2,000 kWh a year · one or two people

$90/mo

$1,078 a year · 8th of 241 plans · median $111

4,000 kWh a year · a typical household

$139/mo

$1,672 a year · 3rd of 241 plans · median $172

6,000 kWh a year · a large household

$189/mo

$2,267 a year · 3rd of 241 plans · median $234

Unchanged since the 7 Nov 2026 snapshot. Dated record for 8 Nov 2026

The rate card

As published to the regulator; cents including GST where the retailer publishes it that way.

Supply charge: 132.50c a day
peak usage: 41.30c per kWh6am to 9.59am every day; 4pm to midnight every day · 51% of use in the estimate
off-peak usage: 23.90c per kWhmidnight to 5.59am every day · 21% of use in the estimate
shoulder usage: 12.50c per kWh10am to 3.59pm every day · 27% of use in the estimate
Controlled load: none published
Solar feed-in: 44.00c per kWh
Discounts: no guaranteed discount
Who can take this plan, as the retailer states it: For further details on the information presented in this fact sheet, or the terms and conditions of the offer, please visit www.1stenergy.com.au or call 1st Energy on 1300 426 594.
Confirm with 1st Energy before you switch.

How the estimate is built: supply + time-of-use rates at 2000/4000/6000 kWh/yr, usage split by the AER daily profile for SA Power Networks (peak 51%, off-peak 21%, shoulder 27%); GST as published; discounts, controlled load and feed-in excluded

Against the reference price

The DMO 2026-27 is the regulator's benchmark for this network; it is the figure every bill compares itself to.

At the regulator's 4,000 kWh a year this plan comes to $1,672 a year. The DMO 2026-27 reference price is $2,334, so this plan is $662 below it. Regulator's determination

Where this plan applies

Electricity offers are published per distribution network, so the rates above hold for every postcode on it.

Every plan on the SA Power Networks network

To see this plan against every other plan at your own usage: compare for a postcode and change the postcode and kWh to yours.

Related plans

The brand's page, the comparison this plan is ranked in, and the plans most like it. Every price on them is read from the same data as this page.

1st Energy electricity plans in South Australia · every network in the state
Every plan on the SA Power Networks network · this plan is 3rd of 241

1st Energy 1st Emerald - Time of Use + Controlled Load
$139 a month at 4,000 kWh · 4th on SA Power Networks
1st Energy 1st Emerald - Single Rate
$143 a month at 4,000 kWh · 5th on SA Power Networks
1st Energy 1st Emerald - Single Rate + Controlled Load
$143 a month at 4,000 kWh · 6th on SA Power Networks
1st Energy Standing Offer - Solar Sharer
$150 a month at 4,000 kWh · 23rd on SA Power Networks

Source: the retailer's plan as published to the Australian Energy Regulator (Energy Made Easy record 1ST1161463MRE1), re-read nightly. Ranked on estimated cost alone; nothing is promoted. How this is collected