Wikipedia's first sentence called it “sunniest area of israel”. Today it says “home to the israeli solar research industry”. Sections present on October 6, 2023 no longer exist: “Technology providers”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the October 6, 2023 one. Red dashes: removed from Wikipedia since.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in October 6, 2023
Solar Energy Center The Negev Desert is home to the Israeli solar research industry, in particular the National Solar Energy Center and the Arava Valley , the sunniest region of Israel The use of solar energy began in Israel in the 1950s with the development by Levi Yissar of a solar water heater to address the energy shortages that plagued the new country. By 1967 around 5% of water of households were solar heated and 50,000 solar heaters had been sold. With the 1970s oil crisis , Harry Zvi Tabor developed the prototype of the solar water heater now used in over 90% of Israeli homes. There are over 1.3 million solar water heaters installed as a result of mandatory solar water heating regulations. Israeli engineers have been at the cutting edge of solar energy technology and its solar companies work on projects around the world. However, even though Israeli engineers have been involved in both photovoltaic and concentrated solar power, the earliest Israeli companies which have become market leaders in their respective fields have all been involved in concentrated solar power. Some notable examples of this are BrightSource, Solel and Brenmiller Energy which all deal with utility scale projects. Additionally, Herzliya based SolarEdge has become a market leader in inverters for non-utility scale photovoltaic solar power. In 2009, Israel found natural gas reserves within their exclusive economic zone which may reduce urgency of solar development. Solar technology in Israel has advanced to the point where it is almost cost-competitive with fossil fuels . The high annual incidence of sunshine in the Negev Desert has spurred an internationally renowned solar research and development industry. At the end of 2008, a feed-in tariff scheme was approved which has led to many residential and commercial solar energy power station projects. Israel's objective in 2011 was to produce 10% of the country's energy from renewable sources by 2020, and officials from Cabinet and The Electricity Authority gave the goal in 2023 to produce 30% of the country's energy from renewable sources by 2030.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1178716237.
The opening as it stood in 2010
The Negev Desert is home to the Israeli solar research industry, in particular the National Solar Energy Center and the Arava Valley , which is the sunniest area of Israel. Solar power in Israel and the Israeli solar energy industry has a history that dates to the founding of the country. In the 1950s, Levi Yissar developed a solar water heater to help assuage an energy shortage in the new country. By 1967 around one in twenty households heated its water with the sun and 50,000 solar heaters had been sold. With the 1970s oil crisis , Harry Zvi Tabor , the father of Israel's solar industry, developed the prototype of the solar water heater now used in over 90% of Israeli homes. Israeli engineers are at the cutting edge of solar energy technology and its solar companies work on projects around the world. There is no oil on Israeli land and the country's tenuous relations with its oil-rich neighbors has made the search for a stable source of energy a national priority. Israeli innovation and research has advanced solar technology to a degree that it is almost cost-competitive with fossil fuels . Its abundant sun made the country a natural location for the promising technology. The high annual incident solar irradiance in the Negev Desert has spurred an internationally renowned solar research and development industry, with Harry Tabor and David Faiman of the National Solar Energy Center two of its more prominent members. At the end of 2008 a feed-in tariff scheme was approved, which immediately put in motion the building of many residential and commercial solar energy power station projects.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 370466901.
The opening as it stood in 2015 3 passages from the previous snapshot no longer appear
Photovoltaic arrays at the Israel National Solar Energy Center The Negev Desert is home to the Israeli solar research industry, in particular the National Solar Energy Center and the Arava Valley , the sunniest region of Israel Solar power in Israel refers to the use of solar energy in Israel , which began in the early days of the state.In the 1950s, Levi Yissar developed a solar water heater to address the energy shortages that plagued the new country. By 1967 around one in twenty households heated its water with the sun and 50,000 solar heaters had been sold. With the 1970s oil crisis , Harry Zvi Tabor , the father of Israel's solar industry, developed the prototype of the solar water heater now used in over 90% of Israeli homes. Israeli engineers have been at the cutting edge of solar energy technology and its solar companies work on projects around the world. However, even though Israeli engineers have been involved in both photovoltaic and concentrated solar power, the Israeli companies which have become market leaders in their respective fields have all been involved in concentrated solar power.Some notable examples of this are BrightSource, Solel and Brenmiller Energy which all deal with utility scale projects.With no oil reserves and the country's tenuous relations with its oil-rich neighbors, the search for a stable source of energy is a national priority.Solar technology in Israel has advanced to the point where it is almost cost-competitive with fossil fuels .The high annual incidence of sunshine in the Negev Desert has spurred an internationally renowned solar research and development industry.At the end of 2008, a feed-in tariff scheme was approved which has led to many residential and commercial solar energy power station projects.Israel's goal is to produce ten percent of the country's energy from renewable sources by 2020.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 660525319.
The opening as it stood in 2020 2 passages from the previous snapshot no longer appear
Photovoltaic arrays at the Israel National Solar Energy Center The Negev Desert is home to the Israeli solar research industry, in particular the National Solar Energy Center and the Arava Valley , the sunniest region of Israel The use of solar energy began in Israel in the 1950s with the development by Levi Yissar of a solar water heater to address the energy shortages that plagued the new country.By 1967 around 5% of water of households was solar heated and 50,000 solar heaters had been sold. With the 1970s oil crisis , Harry Zvi Tabor developed the prototype of the solar water heater now used in over 90% of Israeli homes. There are over 1.3 million solar water heaters installed as a result of mandatory solar water heating regulations. Israeli engineers have been at the cutting edge of solar energy technology and its solar companies work on projects around the world. However, even though Israeli engineers have been involved in both photovoltaic and concentrated solar power, the earliest Israeli companies which have become market leaders in their respective fields have all been involved in concentrated solar power. Some notable examples of this are BrightSource, Solel and Brenmiller Energy which all deal with utility scale projects. Additionally, Herzliya based SolarEdge has become a market leader in inverters for non-utility scale photovoltaic solar power.In 2009, Israel found natural gas reserves within their exclusive economic zone which may reduce urgency of solar development. Solar technology in Israel has advanced to the point where it is almost cost-competitive with fossil fuels . The high annual incidence of sunshine in the Negev Desert has spurred an internationally renowned solar research and development industry. At the end of 2008, a feed-in tariff scheme was approved which has led to many residential and commercial solar energy power station projects. Israel's objective is to produce 10% of the country's energy from renewable sources by 2020.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 963013113.
Today
Wikipedia's first sentence called it “sunniest area of israel”. Today it says “home to the israeli solar research industry”. Sections present on October 6, 2023 no longer exist: “Technology providers”. Read the current article and compare.
2010
2015
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.
Then
sunniest area of israel
Now
home to the israeli solar research industry
Sections that no longer exist
Present on October 6, 2023, absent today, with no near-matching heading in the current article and the article shorter overall, so this is not a renamed heading or a topic absorbed into a fuller treatment. 1 section of 400 characters or more gone since October 6 2023, with the article 881 characters shorter.
Technology providers
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.