I like Diamond Energy but am currently very disappointed with Thier current policy in refunding overpayments of Thier account I decided to use Thier smooth pay which works really well however I recently requested a partial refund due to the balance being in excess of 846 dollars My average account being 245.00 dollars I was told this would take up to ten weeks Very dissatisfied not acceptable

April 11th 2019 Update: Re Over Payment Refund Diamond Energy

I am pleased to advise that Diamond Energy did refund my over payment after communicating my displeasure on there earlier advice that it would take up to ten weeks being there next billing period, Thank you Diamond Energy

Diamond Energy has been our supplier since we switched to Solar about 7 years ago. Every now and then I do some research to see if i can pay even less. I usually find that Diamond Energy is the cheapest based on daily avg kwh and the price even if it is only a few cents, it still shows i'm paying the least so there is no benefit to switching away.

Finally, an electricity company that is transparent and offers great service. We have a premium feed-in tariff. When we're in credit, Diamond pays our bank account on the day the invoice is due. Never had that before! They rank second on the Greenpeace Green Electricity guide, with all renewables (no fossil fuels). That's the most important factor for us.

Life is not always about the cheapest price as cheap service usually hangs together with it. Diamond Energy goes against this by offering very competitive prices and best of all, excellent customer service. I have called a number of times and the call gets answered straight away by very friendly Aussies who sort out problems on the spot. It makes customer service at the other retailers look like a complete joke.

Used Diamond energy for our electricity. Quick setup incl direct debit. Excellent customer service via phone (no anoying menus). Detailed and useful quarterly usage reports via email.

Hands down the best electricity company I have ever dealt with. And the only one to ever offer me discounts. If you believe renewables are the future, I'd recommend them.

House is 100% electric.
Switched over a couple of years back form another supplier after they upped their pricing and did not tell anyone.
Diamond Energy are easy to deal with and their supply charges seem to be a little cheaper than all the others I have checked with.
I check constantly what other suppliers charge, Diamond Energy still rate the best.
Billing is easy and direct debit is convenient.
My only criticism is that you cannot access your account on their web page as you can do with others.
With all the discounts I have obtained with them, my bills are almost manageable.
At this stage I am a happy Diamond Energy customer.

Always been happy with diamond. Have left them in the past. HUGE mistake. Back now ppl in the office actually answers your calls and Australian based and owned as far as I know. Just better than the rest. And I sent solar for a living so looking at bills constantly.

Recieved a $1350 bill from these guys after recently signing up. I have a two bedroom unit and usual bill is between $300-$400 with previous companies.
Be very careful!

I changed from Origin to Daimond to move to renewable energy sources and have had no regrets. Their feed in tariff is competitive. Customer service is local, helpful and honest when I called to query some details on my bill. Also, they've just passed on a real saving to us customers. I replied: "Great news! Thanks. Glad I said NO to the cold caller the other day who said, "So you're not interested, even though you could save lots and lots of money?" Ha ha"
Daimond replied: "Hahaha I loved your response! Yes we have been working hard to ensure ...

Friendly staff that go out of their way to help.
Value green and sustainable energy sources :)
Great service all round.

Very helpful customer service, and extremely good rates. I'm very happy with them. Other electricity companies were an absolute nightmare to deal with, but for over a year now with DE, I have no more issues! And they just emailed me to let me know that the rates have gone down, and that I'll be saving between approx $150-200 per year.

After being given the run-around by AGL Electricity several times, I was looking to change. And Diamond Energy seemed to be head and shoulders above the rest. And so far the experience has been very pleasant and hassle-free. Customer service is excellent, and pricing is certainly fair. I wish they'd do Gas too.

After years with AGL & Alinta, I became alarmed at their exorbitant price hikes, so I switched to Diamond Energy. My elec bills are much lower, I like that DE sources its energy from renewables not dirty coal, the supply is reliable and their customer service is excellent! Wish they also supplied gas but not as yet.

Diamond does the best kWh/hr deal for my personal house hold consumption and PV production. (ToU) Others sometimes get close but what $ value can you put on being able to get quick sensible and informative answers over the phone (every time I have called)?
I have considered churning several times but over approx. 3 years with Diamond, the numbers (for my circumstances) when crunched convince me that great customer service is the clincher. Thanks Jess and Luke.