The Sonnen Core+ battery system is a newer, more affordable option for homeowners looking to pair an energy battery system to an existing solar system or provide seamless storage solutions. Released in early 2022, Sonnen Core+ was made available to residential clients as a way to compete with the more budget friendly options on the market.
While it does not include all of the luxury features commonly associated with the all-inclusive “smart” Sonnen ecoLinx, it does offer a number of beneficial solutions many customers looking for a battery solution are searching for.
Similar to the Sonnen ecoLinx, the Sonnen Core+ is a lithium ion battery that is made up of individual battery modules. These battery modules are all stored in the classic Sonnen cabinet complete with the built-in inverter that is responsible for converting the stored solar electricity (DC) into tangible AC electricity that can ultimately be used to power a home.
The Sonnen Core+ battery still incorporates some smart energy management software to effectively monitor energy usage throughout the day, effectively stores excess energy produced by solar systems to be used at night or during emergency situations, and is a long-lasting safe alternative to energy storage.
With Sonnen Core+, users will be able to take advantage of four different operating modes the system provides. These varying operating modes include the following:
It should also be noted that users will not have to switch the system to operate in emergency backup power mode, it will automatically kick in if the grid goes down. This is one example of the Sonnen Core+ “smart” capabilities. Not all battery or storage systems offer this many operating modes.
Unlike other products in the space, there are two capacity models for clients to choose from depending on individual circumstances. The two models available that encapsulate Sonnen Core+ technology include:
It should be noted that the 10 kWh capacity system is adequate for a good portion of homeowner’s energy consumption needs. However, Sonnen recognizes that some clients may need more which is why it offers the larger 20 kWh model. Not all systems offer varying specs in this regard.
Although the Sonnen Core+ system is made of lithium ion, it is significantly safer than many of its competitors' products. This is because the Sonnen Core+ does not contain any cobalt in its chemistry. The absence of cobalt in the battery packs allows for a more environmentally friendly alternative as less hazardous waste is produced during the production of the system. The actual make of the Sonnen Core+ is also a safer alternative as its batteries are less likely to catch on fire (decreased chances of thermal runaway) since the system is able to maintain stable production at higher temperatures.
Sonnen is known for its technology and seamless pairing solutions. This is incredibly important to those that already have a solar system installed but are looking for increased clean energy usage or energy independence. The Sonnen Core+ system can be seamlessly integrated with all solar panels. This pairing allows for increased clean energy production and use without any communication disruptions. Not all battery systems have these pairing capabilities.
As for the measurable battery specifications, Sonnen Core+ falls in line with the average production and efficiency of its competition. Entirely standard metrics include the following specifications:
The initial Sonnen Core+ models offers a capacity of 10 kWh , 4.8 kW of continuous power, 85.8% round trip efficiency, 10-year/10,000 cycle warranty, and 100% depth of discharge. All of these specifications fall in line with traditional lithium ion manufactured batteries. While this is not necessarily a bad thing, it is simply average or what could be expected from this type of battery.
The actual size of the battery has posed some challenges for homeowners as the weight and space the system takes up is typically larger than other products on the market. Depending on which model of the Sonnen Core+ a client gets, the system itself will weigh anywhere from 408 to 525 pounds. That is about 100 pounds more than similar competitor products.
The system itself is also 27 inches wide, 69.5 inches high (this is increased to 73 inches if the bottom of the cabinet is extended for any reason), and 14 inches deep. Needless to say, the Sonnen Core+ system is a big battery, and homeowners will need to have adequate space for it to be installed.