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Charge Controllers

There are two main types of charge controllers (also called regulators):

  • MPPT (Maximum Power Point Tracking)
  • PWM (Pulse Width Modulation)

10 years ago a MPPT controller was costly compared to a PWM controller. Now very few people choose to use PWM.

Some MPPT controllers can divert surplus power to hot water. As Solar PV is very cheap these days we advise large solar PV (>5kW) with surplus diverted to your hot water tank.

Read our published guide on charge controllers

Read our published guide on surplus power diversion

We only list premium brand charge controllers which have a proven track record and have been tested with our hydro turbines. If you wish to source your own controller online for use with one of our hydro turbines please check with us first.

If you are after quality controllers with an NZ warranty and compliant in NZ then we can assist you.


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