Diamond Energy Customer Reviews and Ratings in 2026
In 2026, Diamond Energy has a rating of 3.3 out of 5 on Trustpilot. And it has a rating of 4 out of 5 on ProductReview. Reviews of Diamond Energy by customers focused on their pricing, customer service and any issues or queries with billing or contracts. Along with our expert Selectra opinion, we have summarised their pros and cons to help you make the right choice when switching energy provider.
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What our energy expert has to say about Diamond Energy
Diamond Energy is a solid choice for customers who prioritise renewable energy and want simple, no-lock-in plans with clear benefits like on-time payment discounts and solar feed-in credits. Its commitment to green power is impressive, backed by a portfolio including biogas, wind, and solar generation. However, as Diamond offers only one residential plan, it may not suit customers seeking a wider variety of options or more customised pricing structures. Overall, Diamond Energy effectively balances environmental responsibility with reliable, customer-friendly service.
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Pros and cons of Diamond Energy according to Selectra
Strengths of Diamond Energy
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Weaknesses of Diamond Energy
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What do customers have to say about Diamond Energy on ProductReview, Trustpilot
The table below offers an overview of the average rating for Diamond Energy based on customers opinions from popular review websites.
| Platform | Rating | Number of Reviews |
|---|---|---|
| ProductReview | 4 out of 5 | 115 |
| Trustpilot | 3.3 out of 5 | 419 |
73% of ProductReview of Diamond Energy are positive reviews.
Diamond Energy stands out in Australia for customers who want their power to come from cleaner sources, offering electricity backed by a strong focus on renewables and the option to match 50% or even 100% of usage with GreenPower. Its core Everyday Renewable Saver-style offers keep things simple, with flexible tariff structures (such as single-rate or time-of-use) rather than a confusing mix of plans, and they’re available to both homes and businesses across key states including NSW, VIC, QLD, and SA. Customers benefit from no lock-in contracts or exit fees, straightforward cancellation with a cooling-off period, and clear bills that are easy to follow. Diamond Energy is also solar-friendly, providing a dedicated feed-in tariff so households with panels can earn credits for the excess power they export. On top of that, there are practical savings incentives like conditional discounts for paying on time or by direct debit, plus convenient payment options such as BPAY, phone, and online card payments, all supported by an Australian-based customer service team focused on renewable energy expertise.
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