More than a dozen Israeli “green” high-tech start-ups displayed their technologies this week at the US-Israel Cleantech Conference at the University of Pennsylvania.

The companies promoting their renewable energy and other green technologies were joined by business leaders, investors and government agency representatives from Greater Philadelphia.

The conference, part of a three-day tour of New York, Pennsylvania and New Jersey for the companies, was organized by the America-Israel Chamber of Commerce and was designed to give exposure to some of the best new start-ups in Israel.

Of particular interest were those developing small-scale alternative technologies, especially solar and wind, for the distributed energy market.

Among the noteworthy companies are AORA, for community-scale solar thermal power stations; Variable Wind Solutions, with a voltage regulation system; TransBiodiesel, that can replace corrosive alkaline and acid catalysts in biodiesel production; and Cequesta Water, for recycling gray water.

Attendees included Hillel Milo, Managing Partner of AquAgroFund, which at $100 million is one of the largest venture capital firms in the cleantech sector in Israel, who said: “I have a feeling we will have a robust cleantech sector [in Israel] in five years.”