Featured in Lean machines – 09-2011

Off-grid maximum power point tracking

Stand-alone electricity supply: Today, it’s no longer necessary to use off-grid modules when installing autonomous systems on mountain cabins or in isolated regions of Africa. Thanks to maximum power point tracking (MPPT) charge controllers, more economical standard modules can also be used.

Martin Zeller carries a solar battery across a flower-filled mountain field in the Allgäu Alps. The installer from Bad Hindelang is on his way to equip the 1,493-meter Hirschalpe with a stand-alone power supply. The cabin can’t operate without a disinfection system for the drinking water. “To keep the solar surface free of snow, we …

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