"This is smart solar. This is actually the solution for energy transition," Sonnen CEO Blake Richetta told CNET. "In other words, you're reducing your carbon footprint far more and you're providing a real solution for getting rid of fossil fuel-based power plants. What that Contact online >>
"This is smart solar. This is actually the solution for energy transition," Sonnen CEO Blake Richetta told CNET. "In other words, you're reducing your carbon footprint far more and you're providing a real solution for getting rid of fossil fuel-based power plants. What that also means to you is a lower electric bill."
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Solar batteries are part of a complex home energy system, with energy needs and solar panels differing from house to house. This makes hands-on testing of these products difficult. Instead, this review is based on specs and information provided by Sonnen online and an interview with Richetta to make sure we have the most up-to-date information.
Sonnen offers three different residential batteries in the US: the SonnenEvo, SonnenCore Plus and EcoLinx. Each battery can provide backup power, which is nice. But Sonnen batteries are designed for a connection with the company's virtual power plant program. Sonnen also offers a commercial and industrial EcoLinx battery called the EcoLinx 100. This review covers only Sonnen's residential battery models.
Sonnen is a German company, specializing in virtual power plant, or VPP, and grid-services technology in Europe. Now Sonnen has brought its VPP technology to the US.
"Sonnen has never been a battery that has had anything to do with anything but virtual power plants," said Richetta. "Harnessing solar and harmonizing it into the greater grid operation and transforming intermittent renewable generation into something that's usable in the grid has always been Sonnen's work."
The Sonnen VPP virtually connects a local network of Sonnen batteries together to form a virtual renewable power plant capable of servicing the power grid. Participating in the Sonnen VPP can help lower your electricity bill and reduce your carbon footprint. You'll also receive cash payments for participating in grid services. Plus, you'll still receive backup power.
You'll be eligible for participation in the Sonnen VPP with the purchase of any Sonnen battery model, but the Sonnen EcoLinx has access to a wider variety of grid services.
The majority of your Sonnen battery's components are built into the unit enclosure itself, so purchasing separate components isn't necessary with this system. This compact design also means you won't have a bunch of boxes hanging on the wall. You won't have to buy all these boxes to make things happen, Richetta said. Everything you need is under one system.
Sonnen's residential batteries offer pretty good capacity options, but the Core Plus and Evo models are a bit lackluster when it comes to modularity. This makes future capacity upgrades more difficult.
However, the EcoLinx is very modular, offering homeowners capacity between 12kWh and 20kWh, installed in increments of 2kWh. Or you can purchase a standalone 30kWh unit.
We'd also like to reiterate that Sonnen batteries were designed to primarily function with VPP technology, unlike other batteries, which are typically designed to function solely as a backup power source or solar storage. But if you choose to use a Sonnen battery as a backup power source, Sonnen offers fairly large capacity sizes.
Performance specs on Sonnen batteries are a mixed bag. Let's start with the positives. All three of Sonnen's batteries have an impressive 100% depth of discharge rating, which basically means you can drain as much of your battery at one time as you need to without damaging it, according to the manufacturer. However, it's still recommended that you don't do so.
The warranty category is one of Sonnen's strongest areas. Each Sonnen battery comes with a great warranty, but the EcoLinx comes with one of the best warranties we've seen among solar batteries. The EcoLinx has the highest year and cycle coverage of any battery we've reviewed. The EcoLinx also comes with a 25-year VPP Project Support Program for specific projects.
Cycle coverage for the Core Plus and Evo models is great too. An average solar battery warranty covers between 4,000 to 6,000 cycles. Sonnen also offers an end-of-warranty capacity guarantee on all its batteries, but we found it to be at about the industry standard.
Cycles covered: The specific number of complete cycles your battery is expected to perform under warranty. If your battery surpasses the specified cycle count, your warranty coverage ends. A battery "cycle" is the process of fully discharging (draining) and recharging your battery. In most battery warranties, your warranty expires once you hit your specified cycle count, no matter how many years of coverage you have left. Make sure to check the fine print for cycle and throughput clauses.
End-of-warranty capacity guarantee: The manufacturer's guarantee that your battery will retain a specific percentage of its original capacity by the time your warranty coverage ends.
If you're experiencing issues with your battery system, Sonnen strongly recommends that you reach out to your installer. Since your installer is able to physically visit the installation site, they'll be able to solve any issues much quicker. Your installer should also be pretty familiar with the type of system you have installed.
But if you can't get in touch with your installer, the next best thing would be to reach out to Sonnen. We only found one way to contact Sonnen for support-related issues, and that's through an online form.
When you purchase a Sonnen battery, you'll also gain access to the Sonnen app, allowing you access to a variety of features. We found the Sonnen app to be a mix of standard solar battery app features and useful extras, like real-time historical data tracking. The main features of the Sonnen app include monitoring your energy production and consumption, helping you avoid expensive time of use rates, setting your battery's backup buffer and tracking your energy data trends to meet your personal energy goals.
About Sonnen batteries reviews
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