There is proven excellent performance of solar installations in New Zealand, however we are far behind a lot of other countries in the number of installations. At least one impediment to implementing solar energy in New Zealand is presented. Reducing the cost of heating water by installing solar hot water system in an income property can improve the market value of this property, as is shown below. Income residential property in Central Dunedin. Space heating by means of distributed hot water.
Same source supplies hot water for taps, baths and showers.
Efficiency of solar hot water system increases with increasing usage of hot water. Value of improvements might change capitalization that can change current market value. This is a purely a mathematical calculation of income property value based on income only and with only one variable - hot water electricity cost. This is to show the possible impact on property value. A registered valuer should asses the real property value.