Electricity Plans in Black Rock 5431
What’s the cheapest electricity plan in Black Rock?
Cheapest plan, on average
The cheapest electricity plan currently available in Black Rock 5431, assuming generic and average household usage and eligibility, is Seasonal Export at $0/yr from iO Energy, as of 4 November 2026. 482 residential plans are compared below.
This is a generic annual assessment only, and assumes:
That is the generic ‘best-priced’ plan answer. The actual best-priced plan for you may well be different.
But you’re not average, are you?
There are 865 electricity plans available in Black Rock, South Australia, and only one of them is the best-priced for you.
Your bill is used to compare plans for you. We don’t sell your data. Privacy.
Review all electricity plans in Black Rock
Compare 865 electricity plans available in Black Rock, South Australia — 482 residential (ranked above) and 383 business. Distribution network: SA Power Networks. Plans requiring solar panels, batteries, or EV chargers are excluded from this generic comparison.
Price history
How have electricity prices changed in Black Rock?
At 4,745 kWh a year, the cheapest plan in Black Rock costs $2,053/yr today, down from a peak of $2,211/yr in May 26. The market average is $2,536/yr.
Prices shown are quarterly estimates based on 13 kWh/day usage under Single Rate tariffs. Includes all available discounts and GST. Excludes once-off fees and charges. Data from grouply.co CDR pipeline.
Bill breakdown
Where does an electricity bill in Black Rock go?
The DMO reference price assuming consumption of 4,000 kWh per year is $2,301 per year. 35%, or $806 of that, is the SA Power Networksdistribution network charge, which pays for the ‘poles and wires’ and other physical infrastructure that delivers power to your home. This charge remains the same no matter which retailer you buy your energy through.
The SA Power Networks residential single-rate distribution tariff (RSR) is 61.85c a day plus 14.51c/kWh.
Distribution charges are the published residential single-rate tariff from the Australian Energy Regulator’s network tariff schedules. Customers on a time-of-use or demand distribution tariff pay a different network amount.
Offers vs the reference price
How many electricity offers in Black Rock beat the reference price?
84% of the 488 market offers available in Black Rock (412 of 488) are at or below the DMO of $2,301/yr at 4,000 kWh a year.
Default Offer prices tend to get the most media coverage, because they are the most simple and visible part of the retailer energy pricing confusopoly. However, most energy consumers are on Market Offers, which start off cheaper than Default Offers — you want a plan that’s right over to the left side of this chart. Inevitably, over time, if you don’t monitor your bills and don’t switch to stay on a competitively priced plan, your plan will drift toward the right, and could wind up costing even more than the ‘safety net’ Default Offer price.
Number of plans by annual cost, $100 bands, at 4,000 kWh/yr.
Reference price: Default Market Offer 2025-26 (DMO 7) (Australian Energy Regulator). Each offer is compared at the reference consumption its own network uses, so both sides of the comparison describe the same household.
By household size
Average electricity bill in Black Rock by household size
In Black Rock 5431, estimated annual costs by household size are 1 person (3,000 kWh a year): $1,282/yr cheapest, $1,666/yr average; 2 people (4,000 kWh a year): $1,523/yr cheapest, $2,035/yr average; 3 people (5,000 kWh a year): $1,742/yr cheapest, $2,404/yr average; 4 or more people (8,000 kWh a year): $2,401/yr cheapest, $3,509/yr average.
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.
All plans
Compare every electricity plan in BLACK ROCK
Annual cost at 4,000 kWh/yr with the default load curve. Cheapest first. Showing 8 of 482 plans.
FAQ
Frequently asked questions
What is the cheapest electricity plan in Black Rock 5431?
Which electricity distributor serves Black Rock 5431?
How do I switch electricity retailers in Black Rock?
How many electricity plans are available in Black Rock 5431?
How often are electricity prices updated?
How many electricity offers in Black Rock are cheaper than the regulated reference price?
How much of an electricity bill in Black Rock is network charges?
What is the average electricity bill in Black Rock by household size?
How have electricity prices changed in Black Rock?
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 488 residential electricity offers serving Black Rock 5431; last refreshed 4 November 2026.
Reference prices are the published regulated benchmarks for each distribution network, set by Australian Energy Regulator. Each offer is compared with its own network’s reference price at that network’s reference consumption. Networks with no published reference price carry no percentage comparison on this page rather than a substituted figure.
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