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Diamond Energy is one of the leading renewable energy providers in Australia, offering customers green energy and solar power incentives, in addition to a highly-rated customer service team. Should you choose Diamond Energy to be your energy retailer or is a different energy provider a better choice? Read more below to find out all the information you need to decide!

Overview of Diamond Energy

Diamond Energy is one of the leading renewable energy providers in Australia, operating in New South Wales, Victoria, South Australia, and Queensland. As a small company, Diamond Energy focuses less on offering multiple energy deals and more on offering high solar energy rebates to its customers. This focus makes Diamond Energy a niche company, but one with high customer reviews across the board.

Founded in 2004, Diamond Energy has strived to provide to customers who want to make a difference. They generate their own energy from a variety of resources, including solar, bio-energy, wind, and wave. Since their founding, Diamond Energy has won several awards in renewable energy, including one of the highest rankings in GreenPeace’s Electricity Review since 2009.

In addition to their renewably sourced energy, they offer big incentives for customers with solar panels, including high feed-in tariffs and extra rebates as well as the ability to opt-in to their GreenPower accredited Diamond Pure Plus programme.

Diamond Energy Electricity Offers

Diamond Energy has one simple plan, with zero lock-in contract or exiting fees, available to customers: Everyday Renewable Saver. Their Every Day Renewable Saver plan is available on multiple tariff options, including:

  • Single rate tariff: Get charged the same amount for your energy consumption no matter the day or time
  • Time of Use: Lower energy rates during off-peak hours, but higher energy rates during peak consumption such as in the evening
  • Optional Controlled Load 1 & 2: Put a high-energy-usage appliance (such as a pool heater or electric boiler) on a separate meter with lower rates

Depending on the distribution zone and type of tariff chosen, discounts could range from 3% off the reference price to over 13% off the reference price if conditional discounts, such as pay on time and direct debit, are met. In addition, customers with solar PV could benefit from Diamond Energy’s generous solar feed-in-tariffs.

What if I don’t have solar panels?While Diamond Energy does focus heavily on customers with solar PV systems, those who don’t have solar can still benefit from Diamond Energy’s conditional discounts, such as pay on time or direct debit, while knowing that they are supporting one of the greenest energy retailers in Australia.

Going Green with Diamond Energy

For customers with an interest in renewables and solar power, Diamond Energy offers attractive green energy options. GreenPeace ranks Diamond Energy as the second greenest energy provider in Australia, citing their zero-emissions intensity, strong public position against fossil fuels, and focus on supporting local energy trading through solar energy rebates.

Perhaps their most attractive offer is Diamond Energy’s solar feed-in tariffs and GridCredits100. In addition to Diamond Energy’s ongoing discounts for electricity, they offer a standard 12c/kWh for solar energy users. As well as their standard feed-in tariffs, Diamond Energy customers with eligible solar batteries can choose to opt-into Diamond Energy GridCredits100. During certain times of the year, Diamond Energy will purchase the stored electricity in your solar battery for 100c/kWh. The frequency of these times vary from region to region and year to year, depending on the demand on the electricity grid.

For customers who don’t have solar panels, Diamond Energy works with third-party sellers to provide solar panels to people in Australia. For more information on how to get solar panels through Diamond Energy, contact them by email.

Diamond Energy is also a voluntary GreenPower accredited company, which allows customers to choose 20%, 50%, or 100% of their energy be turned into renewable initiatives. Through Diamond Energy’s Diamond Pure Plus opt-in programme, you will be charged between 1.10c/kWh to 5.5c/kWh which will then go into investing in future renewable energy resources.

Get in Touch with Diamond Energy

Diamond Energy is routinely cited as having good quality customer service: no phone menu to get through before talking to a real person, Australian-based, and with a customer-centric mentality. Unlike other companies who have multiple phone numbers to call for different queries, Diamond Energy has just one phone, and one email, to contact customer service.

Customers can contact Diamond Energy customer service by calling 1300 838 009 during normal business hours (weekdays between 8:30am and 6pm).

All email queries can be sent to, and faxes sent to (03) 9006 9031.

Diamond Energy can be located at:

Diamond Energy
Level 1, 695 Burke Rd
Camberwell, VIC 3124

Want to Move or Subscribe with Diamond Energy?

If you’re interested in subscribing to Diamond Energy, whether moving to a new address or switching providers, you can do so online with Diamond Energy’s Switch4Good page. When signing up, you will need to provide identification, in addition to standard contact and address details.

Current customers interested in moving with Diamond Energy can do so by filling out this page at least three business days before moving. If it’s an urgent matter and you are moving in under three business days, call 1300 838 009 during normal business hours.

Diamond Energy Reviews

Across the board, Diamond Energy reviews are on par with, if not better than, other energy providers. ProductReview customers give Diamond Energy 4 out of 5 stars, while TrustPilot gives Diamond Energy 4.7 out of 5 stars.

  • Customer-first mentality - Customers cite Diamond Energy’s customer-focused mindset when addressing problems individuals might experience
  • Steep discounts for solar panel users - Customers with solar panels will experience high savings and discounts with Diamond Energy
  • Bill shock - Customers who cite having smaller apartments, without solar panels, have said they received higher-than-average bills

10 Day Cooling Off PeriodAustralia law allows all energy subscribers a 10-business-day cooling off period after subscribing to an energy service, during which you can cancel your service at any time without penalty. Outside of the cooling-off period, you can cancel your energy service with Diamond Energy by contacting them over the phone or by email, at least three business days before you wish to be disconnected.