Off-Grid
WHAT IS AN OFF GRID SYSTEM?
Pure off grid system means that there is no possibility to access the national grid or you are willing to live off the grid by disconnecting your connection from the grid operator. The concept of living without the grid is to rely on energy sources (solar, wind, hydro…) at small scale to charge a battery bank. Via power electronic, the energy stored in batteries is used to power electrical appliances.
APPLICATION
In some cases, it’s impossible to be grid connected because of high cost to build a power line,
remote location such as mountain refuge, island without connection to main land. The use of a generator diesel in such conditions should be limited only to back up (stand-by) otherwise the cost of diesel and logistics to bring hundreds of liters is very high.
REMOTE AREAS
Security and comfort (lighting, heating, household appliances, leisure electronics, telecoms…) can now be provided by autonomous energy systems; when far away from any electrical grid, either by choice or reason.
These systems consist firstly of an energy source; normally a genset, a solar generator, a wind turbine or a combination of these. Secondly of a battery storage, and then thirdly of devices (inverter-charger, battery charger) able to charge the battery from this energy source and to supply users with AC voltage (inverter, inverter-charger).
EQUIPMENT
- Solar panel generating DC voltage with solar charge controller to provide 48Vdc to battery bus bar.
- Small wind turbine generating variable frequency AC with wind charge controller to rectified to 48Vdc for battery charging and additional dumpload that create a load diversion when batteries are 100% in order not to overload batteries
- Batteries bank ideally 48 Vdc but could be 24 or 12 Vdc for smaller systems. With recent technology improvement and cost per kWh, lithium batteries are the best choice for off grid systems.
- DC/AC inverter so voltage and frequency can be used by electrical appliances. A single phase system will require the Next1 or Xtender series from Studer or the Next3 if 3 phases are needed. The 48Vdc from batteries is then converted to 230Vac/50 Hz or 380Vac/50Hz
- Optionally, it is adviced to have a generator as backup which is connected to the AC input/AC source of the inverter. Generator will have special Auto start function which is piloted by the power electronic with external relay so your system is completely autonomous.
HYBRID SYSTEM / RETROFIT AC SYSTEM

THE ALL IN ONE INVERTER TO MAKE GRID HISTORY
The Next3 was designed to work ON / OFF Grid
The Next3 is the combinaison of:
Grid forming inverter, Back up inverter, emergency power supply, in-build solar and wind inverter, inverter battery charger

We can offer the right
off-grid system for you.
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