Diamond Energy Customer Reviews and Ratings in 2026
In 2026, Diamond Energy has a rating of 3.5 out of 5 on Trustpilot. And it has a rating of 3.9 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 | 3.9 out of 5 | 113 |
| Trustpilot | 3.5 out of 5 | 419 |
73% of ProductReview of Diamond Energy are positive reviews.
Diamond Energy stands out in Australia for putting clean power at the centre of its business, supplying more renewable electricity than its customers actually use and giving households the choice of 50% or 100% GreenPower. Its main residential offer is deliberately simple rather than overwhelming, with one easy-to-understand plan available across NSW, Victoria, Queensland and South Australia, flexible tariffs to match different usage patterns, and no lock‑in contracts or exit fees, so you’re free to leave if it stops suiting you. Customers who pay on time and by direct debit can unlock extra savings, while clear, straightforward bills make it easier to keep track of what you’re spending. Diamond Energy is also attractive for solar owners, thanks to competitive feed‑in tariffs and a business model that actively supports small‑scale renewable generation, making it a strong option for anyone who wants their power bill to line up with their environmental values.
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