Cutting the ribbon on electric cars made possible by Better Place, a company back by Israel Clean Tech Ventures. Photo: Better Place.

The World Wildlife Fund, in conjunction with Cleantech Group, just released an index of the top 38 countries in the world which provide “the best conditions” for clean technology startup companies.

Israel came in at number two, just behind Denmark.  Sweden and Finland were third and fourth respectively.

The index was put together, “measuring each one’s potential, relative to their economic size, to produce entrepreneurial cleantech start-up companies and commercialise clean technology innovations over the next 10 years”.

In 2011, Israel ranked fourth in clean tech investments, according to a report released by Dual Citizen.

A crowning achievement for Israel’s clean tech sector also came last year, when Pythagoras Solar, and Israeli based startup that develops energy efficient windows which also generate solar power, was selected by Willis Tower, formerly the Sears Tower, to help the building meet its energy efficiency goals.

A video of Pythagoras’s products can be seen below.