Suppliers of solar hot water kits who contract local Clean Energy Council certified tradesmen to install the system at your home. Rather than using a traditional flat plate collector, Array Energy uses four 250W panels to generate DC power, which is then converted to AC via the Solarflux hot water controller and fed into your hot water cylinder element to heat your hot water. The advantage of this system is that no plumbing is required, and that you can use your existing hot water cylinder. One disadvantage is that this system doesn’t allow for placing the tank on your roof.