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 4.1 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 | 4.1 out of 5 | 118 |
| Trustpilot | 3.3 out of 5 | 419 |
73% of ProductReview of Diamond Energy are positive reviews.
Diamond Energy is an Australian electricity retailer that focuses on genuinely renewable power, sourcing more clean energy than its customers use and offering optional 50% or 100% GreenPower for households and businesses that want to go further. Customers benefit from straightforward plans rather than a confusing range of offers, with flexible tariff options and no lock-in contracts or exit fees, so it’s easy to switch or leave if circumstances change. The provider rewards good payment habits with discounts for paying on time and by direct debit, and keeps billing simple and transparent so it’s clear where every dollar goes. Diamond Energy is also attractive for solar owners, backing rooftop systems with competitive feed-in tariffs and strong support for distributed generation. Operating across key states such as New South Wales, Victoria, Queensland and South Australia, and backed by responsive customer service, Diamond Energy appeals to people who want an easy, flexible plan while actively supporting Australia’s transition to cleaner energy.
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