The off-grid inverter: our selection of the best devices on the market 

An off-grid system, equipped with an off-grid inverter, is not connected to the electricity grid and therefore requires battery storage. Off-grid solar systems with off-grid inverter must be designed to generate sufficient energy throughout the year and have adequate battery capacity to meet the needs of the home, even during winter periods when sunlight is low. significantly reduced.

The high cost of off-grid batteries and inverters, such as off-grid inverters, makes these systems much more expensive than grid-connected systems. They are therefore generally necessary in more isolated areas, far from the electricity network

Off-grid alternating current (AC) coupled solar systems, using a Fronius type solar inverter, with a bi-directional battery inverter. This type of assembly is called the “AC Coupling” configuration.

How to choose a reliable off-grid inverter?

Here is our selection of off-grid inverters, classified according to criteria such as reliability, functionality, continuous and peak power capacity, as well as remote monitoring capacity.

1. Studer Innotec, Xtender XTM & XTH range (Switzerland)

2. VictronEnergy – Multiplus II / Quattro (Netherlands)

3. SMA – SUNNY ISLAND series (Germany)

4. DEYE, SUNK range (China)

What are the overload capacities?

High-quality off-grid inverters use large, heavy-duty transformers to handle high startup loads (surge) without overheating. In general, the best off-grid inverters with the highest overload capacities contain large toroid core transformers. These high quality transformers feature very low magnetic flux leakage and high inductance, which results in increased operational efficiency and, in general, a very long service life. Inverters from Selectronic, SMA, Studer Innotec Electric and Victron integrate transformers of this type.