Solar

Waveinverter supplies solar panels, MPPT and PWM charge controllers, cabling, and CPEng-engineered ground-mount racking for off-grid and backup power across New Zealand. An off-grid solar system balances three things: the panels that generate power, the charge controller that manages it, and the battery bank that stores it. An MPPT (maximum power point tracking) controller extracts more energy than a basic PWM controller, especially in cold or low-light conditions and on longer panel strings, and is the right choice for most off-grid systems. Size a system from your daily energy use, then derate for a New Zealand winter and add the days of autonomy you need to ride out cloudy spells.

What size solar system do I need off-grid? Start from your winter daily consumption in kilowatt-hours, not summer, because winter generation is the limiting factor.