Diamond Energy energy plans & prices 2026

Diamond Energy offers 175 plans in Australia (175 electricity), based on Consumer Data Right (CDR) data updated daily by Bill Hero.

Total plans

175

Complaints rate

0.26%

Better than average

Cheapest

$1,285

/yr @ 4,000 kWh

Customers

11,724

0.2% market share

Founded

2004

Rates sourced from CDR and refreshed daily. Last updated: 8 July 2026.

Bill Hero is an independent, fully automated comparison and switching service: we compare every bill you receive against every plan from every provider, then help you switch whenever you can save. We don't seek or accept commission fees from Diamond Energy or any other provider, which means we work only for you.

About Diamond Energy

Diamond Energy is a Melbourne-based independent electricity retailer founded in 2004. It consistently earns 5-star ratings in Greenpeace's Green Electricity Guide and has placed first in CHOICE's Best Electricity Provider rankings. Diamond sources more renewable energy than its customers consume (beyond carbon neutral) and offers accredited GreenPower options via its Diamond Pure Plus plans with competitive solar feed-in tariffs. Its base rates are typically higher than the cheapest market offers. Diamond operates in VIC, NSW, SA, and QLD.

Products offeredEnergy Retailer

Residential customers11,724 (0.2% share)

GreenPower productsYes — accredited

Australian ownershippartial

Market positionSmaller / specialist retailer

Diamond Energy has 175 plans in Bill Hero's comparison.

Bill Hero is an independent comparison service: we don't take placement fees from Diamond Energy or any other provider. Rates below are sourced from CDR and refreshed daily.

Cheapest Diamond Energy electricity plans

Filter:

Plan	Retailer	Flat ratec/kWh	Time of use c/kWh			Supplyc/day	Solar FITc/kWh	Annual cost ▲at 4,000 kWh/yr
			Peak	Off-peak	Shoulder
Diamond Everyday Flat rate	Diamond Energy	22.73	—	—	—	103.03	3.0	$1,285	Switch
Diamond Everyday with CL Flat rate	Diamond Energy	22.73	—	—	—	103.03	3.0	$1,285	Switch
Diamond Everyday - T52 Time of useBusiness	Diamond Energy	—	29.60	17.43	—	129.53	3.0	$1,316	Switch
Diamond Everyday - T72 CL Time of use	Diamond Energy	—	33.00	18.75	—	111.05	3.0	$1,326	Switch
Diamond Everyday - T72 Time of use	Diamond Energy	—	33.00	18.75	—	111.05	3.0	$1,326	Switch
Diamond Everyday - T52 Time of useBusiness	Diamond Energy	—	31.35	18.15	—	122.72	3.0	$1,332	Switch
Diamond Everyday - T72 Time of use	Diamond Energy	—	34.00	20.56	—	100.00	3.0	$1,349	Switch
Diamond Everyday - T72 CL Time of use	Diamond Energy	—	34.00	20.56	—	100.00	3.0	$1,349	Switch
Diamond Everyday - T72 CL Time of use	Diamond Energy	—	33.90	21.00	—	104.95	3.0	$1,378	Switch
Diamond Everyday - T72 Time of use	Diamond Energy	—	33.90	21.00	—	104.95	3.0	$1,378	Switch

Showing 10 of 10 plans. Click column headers to sort.

Showing 10 of 175 electricity plans · Sample rows — rates sourced from CDR, refreshed daily.

Show all 175 electricity plans

You can also compare plans using the free government tool: Energy Made Easy. Bill Hero adds CDR-based exact comparisons, demand-tariff support, and automated bill monitoring.

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Frequently Asked Questions

How many plans does Diamond Energy offer?▾

Diamond Energy offers 175 plans in Australia (175 electricity, 0 gas), based on Consumer Data Right (CDR) data updated daily by Bill Hero.

Does Diamond Energy offer both electricity and gas?▾

Diamond Energy currently offers electricity only — 175 plans are listed in CDR data. Bill Hero does not have any gas plans on file from this retailer.

What is the cheapest Diamond Energy electricity plan?▾

Diamond Everyday is the cheapest Diamond Energy residential electricity plan in Bill Hero's comparison, with an estimated annual cost of $1,285 at 4,000 kWh/year. Your actual cost depends on your usage and tariff — see the table above for the full list.

Is Diamond Energy a major or smaller retailer?▾

Diamond Energy is a smaller-scale retailer in Bill Hero's comparison, with 175 plans on offer. Smaller retailers often compete on price or service rather than breadth of plan options.

How often is Diamond Energy's plan data updated?▾

Bill Hero refreshes Diamond Energy's plan data daily from the Consumer Data Right (CDR) energy API. Pricing on this page reflects the latest published rates from Diamond Energy.

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