Which solar system is best in New Zealand?

When looking for ways to save power with solar both approaches are fine but direct to water heating approach is more efficient at extracting the energy from the sun for a given area of roof space and therefore it takes up less area on the roof. You can expect to earn a great return on a solar hot water investment within six to eight years, much quicker that the expected return from a solar PV system; currently ten years.

Continue reading >>