Note to installers: Don’t wire directly in to bathtub or the duck will die.

Over the past week or so I’ve been politely prodded  by a plethora of people pushing me to provide information pertaining to solar hot water diverters.

A ‘hot water diverter’ is a box of power electronics that that sucks up your homes’ surplus solar electricity and diverts it to an electric hot water system instead of exporting it to the grid where it would earn a feed-in-tariff.  If the whole system is well designed and installed it will  greatly reduce or even eliminate using grid electricity for water heating. [Read more…]