How does the Enphase Microinverter series compare to standard inverters? Here we review the brand and explore their advantages.
Microinverters or micros are a specific type of solar panel inverter offering significant advantages compared to traditional string inverters.
Primarily they allow the conversion of direct current (DC) to usable alternating current (AC), but more specifically, microinverters enable more power production, improved safety and longevity as well as an overall easier installation process.
Enphase Microinverters is the market-leading microinverter manufacturer and has continued to innovate since its initial launch back in 2009.
But how does the Enphase microinverter range compare to other brands and how can they significantly improve your domestic solar array?
Let's find out...
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Enphase Microinverter Review
At present Enphase has two ranges within their microinverter product offerings including the current seventh-generation IQ7 series and the new eighth-generation IQ8 series.
Enphase Microinverter Range Comparison
Specifications | Enphase IQ 7A | Enphase IQ 7+ | Enphase IQ 7X | Enphase IQ 8 |
Peak Output Power | 366VA | 295VA | 320VA | 245VA |
Maximum Constant Output Current | 349VA | 290VA | 315VA | 240VA |
Maximum DC Voltage | 58V | 60V | 79.5V | 60V |
EU Inverter Efficiency | 96.5% | 96.5% | 96.5% | 96.5% |
Dimensions including the Safety Switch/Connection Unit | 212 × 175 × 30.2 mm | 212 × 175 × 30.2 mm | 212 × 175 × 30.2 mm | 212 × 175 × 30.2 mm |
Weight | 1.08kg | 1.08kg | 1.08kg | 1.08kg |
Warranty period | 10 years | 10 years | 10 years | 25 years |
Operational Temperature Range | -40°C to 60°C | -40°C to 65°C | -40°C to 60°C | -40°C to 60°C |
Made in | North America/Asia | North America/Asia | North America/Asia | North America/Asia |
Table data: last updated September 2023.
Main Features of the Enphase Microinverter
Here is a summary of the main features of the Enhphase microinverter range:
Power rating: 240VA to 380VA AC (230W - 540W DC)
Latest series: IQ8 Microinverter
Battery compatible - Yes (AC-coupled batteries only)
Off-grid compatible - Yes (with Encharge battery & IQ8 microinverter)
Product Warranty: 25 Years (with Heatable)
Service and support: Excellent - 5/5
Price bracket: Premium
Overall verdict: Highly recommended 5/5
Please note: the IQ8 series is currently not available in Europe and the UK but is expected to be released in these regions in the near future.
Learn all about the benefits of the Enphase microinverter in our YouTube video review below:
Enphase IQ7 Series
Since its debut in 2018, the IQ7 series has evolved with multiple iterations, culminating in the recent release of the high-performance, smart grid-ready IQ7A microinverter.
As solar panel technology advances, the IQ7A stands out with its enhanced continuous power rating, boasting 349VA, a significant improvement over the IQ7X's 320V rating.
It's essential to highlight that the IQ7A is optimised for compatibility with the latest 60 and 72-cell panels, as well as 120 and 144 half-cut high-powered solar panels, capable of generating outputs of up to 460 watts.
Enphase IQ8 Series
Enphase has introduced its long-awaited eighth-generation microinverters, featuring cutting-edge innovations that enable advanced grid-forming capabilities for off-grid usage and precise power management.
These microinverters are celebrated as the industry's trailblazers in grid-forming technology with split-phase power conversion capabilities.
They offer a versatile range of sizes, spanning from 240VA to 380VA, accommodating a wide spectrum of panel types, from legacy 60-cell panels to the latest high-powered 540W+ panels commonly employed in expansive commercial installations.
Please note: at present, the Q8 series is not available in Europe and the UK, but has a release date for later this year (2023).
Main Features of the Enphase Microinverter
Panel Level Monitoring
Microinverters enable system owners to actively monitor both overall system performance and the performance of individual panels, providing them with comprehensive insights.
Moreover, installers can conveniently access a separate login to monitor all their systems at the panel level.
This feature includes the added benefit of receiving alerts in the event of underperforming panels, effectively preventing system downtime and facilitating smoother warranty claims.
Enphase Energy takes pride in offering the Envoy monitoring hub, a tool designed to streamline system setup, commissioning, and remote monitoring.
Furthermore, the company actively maintains a global system registry at their US headquarters, allowing them to monitor registered systems worldwide.
This proactive approach not only aids in promptly identifying and addressing fault conditions but also serves as a valuable resource for continuously enhancing their products.
We have also reviewed the best solar panels and covered how long solar panels last in the UK.
Extremely Low Failure Rates
The majority of solar panel inverters last around 10 years, reflecting their overall quality, meaning that on average typical string inverters will need to be replaced twice during the lifespan of the average 25-year system.
So, while string inverters may be cheaper to buy upfront, they may end up costing you more in the long run.
For context, the Enphase microinverter reports a 1 in 2000 failure rate and they’re backed by a full replacement 25-year warranty.
Superior Heat Resistance
Enphase microinverters have been meticulously engineered and subjected to rigorous testing, specifically designed to withstand high temperatures.
This resilience addresses a common challenge faced in hotter climates, particularly during the summer months when solar arrays often encounter decreased efficiency and performance in extreme heat.
In a noteworthy 2014 test conducted in Adelaide, Australia, where temperatures exceeded 40°C (104°F) for extended periods, reaching a scorching 45.9°C (115°F), Enphase microinverters consistently remained operational.
The company proudly proclaimed that "No Enphase Microinverter operating in Australia shut down due to high temperature" during this historic period of extreme heat.
While the UK's summer temperatures are not as extreme as those in Australia, they can still exert a limited impact.
However, those who choose Enphase microinverters can rest assured that such temperature-related concerns are unlikely to affect their systems.
Enphase Microinverter Warranty Period
Enphase offers a very generous 25-year product warranty on its microinverters, which is a significant advantage over string inverters that often offer a much shorter warranty period.
Why?
For the 25-year life of a system, you’d need to budget at least two replacement string inverters (these carry a warranty of between 5-10 years) and would cost in the region of £1000-£2000 each time, plus any loss of generation as the whole system will be down.
Enphase Microinverter Costs UK
What is the price of an Enphase microinverter in the UK?
Enphase microinverters tend to be pricier compared to string inverters, but their longevity and the included 25-year warranty justify the investment.
The inverter plays a crucial role in your solar system, contributing to around 10% of the total cost, impacting system efficiency and overall performance significantly.
In the UK, you can anticipate spending between £100 and £150 for each Enphase microinverter required for your solar system.
At Heatable, all of our systems come with the Enphase microinverter as standard and this will be reflected in your fixed price quote.
What should you know before buying solar? Have a flat roof? Read all about flat roof solar and if you have a conservatory, it is possible to have solar on a conservatory roof too.
Next Steps For Your Solar Journey:
When planning to install solar panels for your home, there are several important factors to consider. Make sure to refer to the following guides to help you make informed decisions:
To dive deeper into these topics, head over to our advice section, check out our YouTube channel for informative videos, or read a customer case study to see how others have benefited from their solar installation.
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