cost of solar hot water system
They can meet the hot water needs of average homes: 50-100 gallons (190 to 380 liters) of hot water per day... Simpler water heaters - thermosyphon and batch/ICS systems for moderate and hot climates - can be a lot cheaper: $1,000 and $3,000... NOTE on solar water heater prices in the US, Israel and China: According to an EERE document published in June 2011, solar water heater prices range between $5.000 and $10.000 in the USA, $1.000 and $1.800 in Israel, and $300 and $1.000 in China. Such huge difference is explained by a large set of factors.
Solar water heating systems have become popular in China, where basic models start at around 1,500 yuan (US$235), much cheaper than in Western countries (around 80% cheaper for a given size of collector).