Question: What nation is the leader in solar energy use per capita?
About the article "Israel", section "Geography and climate".

Candidate passages:
Kenyans, are the world leader in the number of solar power systems installed per capita.
More Kenyans are turning to solar power every year rather than make connections to the country’s electric grid.
This is due to the high connectivity costs to the grid and due to the fact that there is an abundance of solar power in Kenya.
Safaricom sells solar phones in Kenya. 
Solar power capacity per capita was the second highest in the EU in 2010. 
Israel and Cyprus are the "per capita" leaders in the use of solar water heating systems with over 30%–40% of homes using them.
Flat plate solar systems were perfected and used on a very large scale in Israel.
In the 1950s there was a fuel shortage in the new Israeli state, and the government forbade heating water between 10 pm and 6 am.
Levi Yissar built the first prototype Israeli solar water heater and in 1953 he launched the NerYah Company, Israel's first commercial manufacturer of solar water heating.
Despite the abundance of sunlight in Israel, solar water heaters were used by only 20% of the population by 1967.
Following the energy crisis in the 1970s, in 1980 the Israeli Knesset passed a law requiring the installation of solar water heaters in all new homes (except high towers with insufficient roof area).
As a result, Israel is now the world leader in the use of solar energy "per capita" with 85% of the households today using solar thermal systems (3% of the primary national energy consumption), estimated to save the country of oil a year, the highest per capita use of solar energy in the world.
In 2005, Spain became the first country in the world to require the installation of photovoltaic electricity generation in new buildings, and the second (after Israel) to require the installation of solar water heating systems in 2006. 
Ever since the discovery of oil at Spindletop, energy has been a dominant force politically and economically within the state.
According to the Energy Information Administration, Texans consume the most energy in the nation per capita and as a whole.
Unlike the rest of the nation, most of Texas is on its own alternating current power grid, the Texas Interconnection.
Texas has a deregulated electric service.
The Railroad Commission of Texas, contrary to its name, regulates the state's oil and gas industry, gas utilities, pipeline safety, safety in the liquefied petroleum gas industry, and surface coal and uranium mining.
Until the 1970s, the commission controlled the price of petroleum because of its ability to regulate Texas's oil reserves.
The founders of the Organization of Petroleum Exporting Countries (OPEC) used the Texas agency as one of their models for petroleum price control.
Texas has known petroleum deposits of about , which makes up approximately one-fourth of the known U.S. reserves.
The state's refineries can process of oil a day.
The Baytown Refinery in the Houston area is the largest refinery in America.
Texas also leads in natural gas production, producing one-fourth of the nation's supply.
Several petroleum companies are based in Texas such as: Conoco-Phillips, Exxon-Mobil, Halliburton, Valero, Marathon Oil, Tesoro, and Western Refining.
The state is a leader in renewable energy commercialisation; it produces the most wind power in the nation.
The Roscoe Wind Farm in Roscoe, Texas, is the world's largest wind farm as of October 2009 with a 781.5 megawatt (MW) capacity.
The Energy Information Administration states that the state's large agriculture and forestry industries could give Texas an enormous amount biomass for use in biofuels.
The state also has the highest solar power potential for development in the nation. 
Levi Yissar was an Israeli engineer and entrepreneur.
He built the first prototype Israeli solar water heater.
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.
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.
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).
As a result, Israel is now the world leader in the use of solar energy "per capita" (3% of the primary national energy consumption).