Levi Yissar

Israeli engineer and entrepreneur

Levi Yissar

לוי ישר

Nationality| Israeli
Occupation(s)| Engineer, Entrepreneur
Known for| Built the first prototype Israeli solar water heater
Notable work| Founder of NerYah Company

Levi Yissar (Hebrew: לוי ישר) was an Israeli engineer and entrepreneur. He built the first prototype Israeli solar water heater.[1]

In the 1950s there was a fuel and electricity shortage in the new Israeli state, and the government forbade heating water between 10 p.m. and 6 p.m. As the situation worsened, Yissar proposed that instead of building more electrical generators, homes should switch to solar water heaters. He built a prototype in his home, and in 1953 he started NerYah Company, Israel's first commercial manufacturer of solar water heaters.[2]

By 1967 around one in twenty households heated their water with the sun and 50,000 solar heaters had been sold.[2] However, cheap oil from Iran and from oil fields captured in the Six-Day War made Israeli electricity cheaper and the demand for solar heaters to drop.[1] Following the energy crisis in the 1970s, the Israeli Knesset passed a law requiring the installation of solar water heaters in all new homes (except high towers with insufficient roof area).

## References

[edit]

1. ^ a b Solar Evolution - The History of Solar Energy[usurped], John Perlin, California Solar Center.
2. ^ a b Petrotyranny by John C. Bacher, David Suzuki, published by Dundurn Press Ltd., 2000; reference is at Page 70 [1]

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