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 | 118 |
| Trustpilot | 3.3 out of 5 | 419 |
73% of ProductReview of Diamond Energy are positive reviews.
Diamond Energy stands out in Australia for putting renewable electricity at the centre of everything it does, giving households and businesses the option to choose 50% or 100% GreenPower while knowing their usage is backed by a strong mix of solar, wind and other clean sources. Its plans are deliberately simple, with one core residential offer available across New South Wales, Victoria, Queensland and South Australia, avoiding confusing plan names and hidden conditions. Customers enjoy flexibility through no lock‑in contracts or exit fees, so they can leave at any time without penalty, and can unlock extra savings with on‑time payment and direct‑debit discounts, all supported by clear, straightforward bills. Diamond Energy is also attractive for solar owners, who can benefit from a dedicated feed‑in tariff and a retailer that actively supports small‑scale renewable generation. Combined with accessible customer support and a focus on transparency rather than gimmicks, Diamond Energy appeals to people who want an easy, reliable power service that also aligns with their environmental values.
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