Solarwatt launches modular storage system

The Solarwatt Matrix system takes a module approach to battery storage.

Called the MyReserve Matrix, the new system comprises two individual units, the MyReserve Command unit, which incorporates the power electronic components, and the 2.2 kWh battery MyReserve Pack.

Solarwatt has introduced a new highly flexible battery product to the fast-moving solar+storage market. The Solarwatt MyReserve Matrix separates the battery cells from the power electronics, to result in a system that can be scaled to a range of end users, installed and serviced with relative ease, and even scaled over time, as household or business energy needs change.

Up to five 2.2 kWh battery Packs can be coupled with a singe Command unit, delivering up to 11 kWh of storage capacity and 4 kW of power output. Solarwatt says that this will allow for systems with capacities as little as 2.2 kWh up to 11 kWh on a single Command unit.

The Command unit will be sold to German consumers for slightly less than €2,000 including tax, with each battery Pack priced close to €1,900. For a Matrix array suitable for a standard residential application, when two 2.2 kWh Packs and one Command unit is cycled 6,000 times, then the storage cost comes in at €0.20/kWh.

CFO and Managing Partner Cartsten Bovenschen noted that the modular system allows for Solarwatt to provide a battery product that is more closely aligned to the end customer’s need, rather than the over- or under-sizing of a storage system that can occur with standard battery arrays.

Through combining a number of command units, each with five battery Packs, Solarwatt reports that a battery system with a capacity of up to 2 MWh can be installed at one site.

Solarwatt claims that an additional advantage of this modular approach is that it facilitates quick installation, by a single installer. Both the Command and Pack units weigh less than 25 kg, facilitating this ease of installation along with transportation.

In terms of markets, Solarwatt will be introducing the Matrix system to Germany in mid-2017, and is also aiming to supply the fast-growing Australian storage market at the same time.

The system deploys lithium ion cells, supplied by SK Innovation from South Korea, and deploys a ceramic separator technology, for enhanced safety.

The MyReserve Matrix can be retroactively coupled with existing PV system and, along with its predecessor the MyReserve battery from Solarwatt, is DC coupled.

While the modular system deployed by the Matrix is similar to that employed by Enphase with its AC battery system, the new Solarwatt system is the first DC-coupled modular solution to be introduced to solar and storage markets globally.